dkm/a-2 module basics flow monitor · 10 dkm/a-2 module basics flow monitor 03.08.2016. all claims...
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DKM/A-2 Module BASICSFlow Monitor
Operating Instructions
Series DKM/A-2Type DKM/A-2/2 thru DKM/A-2/7
Read the instructions prior to performing any task!
DKM/A-2 Module BASICS, 1, en_US
© Meister Strömungstechnik GmbH 2013
Meister Strömungstechnik GmbH
Im Gewerbegebiet 2
63831 Wiesen
Germany
Telephone: +49 6096 9720 - 0
Fax: +49 6096 9720 - 30
Email: [email protected]
Internet: www.meister-flow.com
These instructions were compiled by:
Meister Strömungstechnik GmbH
Subject to change without notice
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These instructions facilitate the safeand efficient handling of a flow monitor(referred to as "device" in the fol-lowing). The instructions are an inte-gral part of the device and must bekept within easy reach for the per-sonnel in the immediate vicinity of thedevice at all times. Personnel mustcarefully read and understand theseinstructions before commencing allwork. The basic requirement for safework is adherence to all safety andhandling instructions stipulated inthese instructions. The local accident-prevention regulations and generalsafety standards and regulations forthe field of application of the devicealso apply. Illustrations in theseinstructions are provided to aid generalunderstanding and might deviate fromthe actual model. No claims can bederived from any such differences.
Limitations of liability
All details and instructions in thismanual have been compiled underconsideration of the valid standardsand regulations, the current state-of-technology and our many years ofknowledge and experience. The manu-facturer does not accept any liabilityarising from:
n non-observance of any details inthese instructions
n improper use of the device, or usethat is not in accordance withthese instructions
n use of non-trained personnel
n unauthorized retrofitting or tech-nical changes that have not beenauthorized by the manufacturer
n use of non-approved spare parts
The duties and obligations agreedupon in the delivery contract apply infull, as well as the general terms andconditions, the terms of delivery by themanufacturer and the valid legal regu-lations applicable at the conclusion ofthe contract.
Copyright
These operating instructions are pro-tected by copyright.
Except for internal purposes, transferof these instructions to third-parties,copying them in any way– even in part – as well as dissemina-tion and/or communication of their con-tent is forbidden without prior writtenauthorization from Meister Strömung-stechnik ("manufacturer"). Violationsare subject to claims for indemnifica-tion. The manufacturer reserves theright to assert additional claims.
Copyright is the property of the manu-facturer.
© Meister Strömungstechnik GmbH
Im Gewerbegebiet 2
63831 Wiesen
Germany
Supplemental instructions
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Table of contents1 Overview...................................................................................................... 7
1.1 Short description.................................................................................. 71.2 Warranty and guarantee provisions..................................................... 71.3 Customer service................................................................................. 7
2 Safety........................................................................................................... 82.1 Explanation of symbols........................................................................ 82.2 Correct use in accordance with these instructions............................. 102.3 Special precautions............................................................................ 112.3.1 Hazards from electrical current....................................................... 112.3.2 Mechanical hazards........................................................................ 122.3.3 Hazards from high or low temperatures.......................................... 132.3.4 Radiation hazards........................................................................... 132.3.5 Hazards caused by media............................................................... 142.4 Personnel requirements..................................................................... 142.5 Personal safety equipment................................................................. 152.6 Protective systems............................................................................. 162.7 Replacement parts............................................................................. 162.8 Environmental protection................................................................... 172.9 Responsibility of the owner................................................................ 17
3 Design and function................................................................................. 203.1 Overview............................................................................................ 203.2 Device description.............................................................................. 203.3 Component description...................................................................... 21
4 Transport, packaging and storage.......................................................... 234.1 Safety instructions for transport......................................................... 234.2 Transport inspection........................................................................... 234.3 Packaging.......................................................................................... 234.4 Symbols on the shipping box............................................................. 244.5 Storage............................................................................................... 24
5 Installation and initial startup.................................................................. 265.1 Safety................................................................................................. 26
Table of contents
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5.2 Requirements at the place of installation........................................... 265.3 Preparatory work................................................................................ 275.4 Installation in the pipe system............................................................ 325.5 Initial startup....................................................................................... 365.6 Electrical connection.......................................................................... 375.6.1 Switch contact SG-15 with connector in compliance with
EN175301-803................................................................................ 375.6.2 Plug connector M12x1.................................................................... 385.6.3 Cable............................................................................................... 395.6.4 Degree of protection (IP-Code)....................................................... 405.7 Grounding the device......................................................................... 405.8 Plug connection.................................................................................. 405.9 Contact protection measures............................................................. 42
6 Operation................................................................................................... 456.1 Setting the switch point ..................................................................... 456.2 Checking the flow............................................................................... 47
7 Toubleshooting......................................................................................... 487.1 Safety................................................................................................. 487.2 Troubleshooting guide........................................................................ 50
8 Maintenance.............................................................................................. 528.1 Safety................................................................................................. 528.2 Maintenance plan............................................................................... 528.3 Removal from the pipe system........................................................... 538.4 Disassembly....................................................................................... 548.5 Maintenance....................................................................................... 608.5.1 Cleaning.......................................................................................... 618.5.2 Parts replacement........................................................................... 628.5.3 Assembly......................................................................................... 628.5.4 Switch contact replacement............................................................ 708.6 Measures to be taken after maintenance work.................................. 71
9 Disassembly and disposal....................................................................... 729.1 Safety................................................................................................. 729.2 Disassembly....................................................................................... 72
Table of contents
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9.3 Return Materials................................................................................. 739.3.1 Return Materials Authorization........................................................ 739.4 Disposal............................................................................................. 73
10 Technical data........................................................................................... 7410.1 Device data plate............................................................................. 7410.2 Switch contact data plate................................................................. 7410.3 Dimension sheet.............................................................................. 7510.4 General specifications...................................................................... 7610.5 Electrical specifications.................................................................... 7710.6 Measuring ranges............................................................................ 7810.6.1 Standard measuring ranges.......................................................... 7810.7 Operating data................................................................................. 78
11 Annex......................................................................................................... 8011.1 Tightening torque............................................................................. 8011.2 Replacement parts........................................................................... 8011.3 Tools................................................................................................ 8211.4 Sealant............................................................................................. 8211.5 Lubricants......................................................................................... 83
12 Index.......................................................................................................... 84
Table of contents
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1 Overview1.1 Short description
Fig. 1: DKM/A-2 flow monitor
1 Switch point adjustment scale(concealed in this view)
2 Switch contact with female socketor connecting cable
3 Mechanical indicator with displayscale and pointer
The flow monitor DKM/A-2 monitorsthe continuous flow of liquids. It isdesigned for installation in pipe sys-tems.
A float inside the device is moved bythe medium flowing through it. Thedesired switch point can be set on theswitch point adjustment scale, wherebythe arrow on the switch contact isaligned to the desired volume flowvalue on the switch point adjustmentscale. The pointer on the mechanicalindicator shows the actual flow rate.
External measuring devices can beconnected at the socket.
1.2 Warranty and guar-antee provisions
Warranty and guarantee provisions arecontained in the general terms andconditions of the manufacturer.
1.3 Customer serviceFor technical information, please con-tact our customer service department(for contact details, see Page 2).
Furthermore, our staff is always inter-ested in receiving new information andexperiences gained from application ofthe device, which may be useful inimproving our products.
OverviewCustomer service
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2 SafetyThis chapter provides an overview ofimportant safety aspects required foroptimum protection of personnel aswell as for safe installation and safeoperation of the device.
Non-observance of the handling andsafety instructions listed in this manualmay result in hazardous/dangerousconditions and in damage to property.
2.1 Explanation of sym-bols
Safety instructions
Safety instructions in this manual aremarked by symbols. The safety instruc-tions are preceeded by signal wordsthat indicate the level of danger/hazard.
To prevent accidents or injury to per-sons as well as damage to property,always observe the safety instructionsand proceed carefully.
DANGER!
This combination of symbol andsignal word indicates an imme-diate, dangerous condition thatresults in death or serious injury ifit is not avoided.
WARNING!
This combination of symbol andsignal word indicates a possiblydangerous condition that mightresult in death or serious injury if itis not avoided.
SafetyExplanation of symbols
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CAUTION!
This combination of symbol andsignal word indicates a possiblydangerous condition that mightresult in minor or slight injury if it isnot avoided.
NOTICE!
This combination of symbol andsignal word indicates a possiblydangerous condition that mightresult in damage to property and tothe environment if it is not avoided.
Tips and recommendations
This symbol emphasizes usefultips and recommendations as wellas information for efficient andfailure-free operation.
Signs used in these instructions
The following signs and highlightingare used in these instructions to iden-tify handling instructions, the descrip-tion of results, lists/enumerations, ref-erences and other elements:
Designates step-by-step han-dling instructions
ð Designates a state or anautomatic sequence as aresult of a specific operatingstep
n Designates randomly ordered enu-merations and list entries
Ä “Signs used in these instructions”on page 9, designates references tochapters in these instructions
SafetyExplanation of symbols
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2.2 Correct use inaccordance withthese instructions
The device is designed and con-structed exclusively for the intendeduse described herein.
Correct use in non-hazardous areas
The flow monitor serves exclusivelyto monitor the continuous flow of liq-uids within a temperature range of-20 °C to 120 °C (optional: 160 °C) ata maximum operating pressure of:300 bar (brass version) and 350 bar(stainless steel version).
Correct use in explosion-hazardzones
For employment in explosion-hazardzones, changed conditions apply forthe intended use.
The intended use in explosion-hazardzones is described in the OperatingInstructions "DKM/A-2 Module ATEX".
Intended use in explosion-hazardzones includes the observance of allspecifications in these OperatingInstructions, as well as those for "DKM/A-2 Module ATEX ".
Any additional or different application,above and beyond the correct use inaccordance with these instructions, isdeemed as incorrect use.
WARNING!
Danger due to incorrect use!Incorrect use of the flow monitormay result in dangerous condi-tions.
– Use the flow monitor onlywithin the stipulated perform-ance limits
– Do not subject the flow mon-itor to severe temperature fluc-tuations
– Do not use the flow monitorwith quick acting valves
– Do not use the flow monitorwith solenoid valves
– Do not subject the flow mon-itor to vibrations
– Do not subject the flow mon-itor to pressure surges
– Do not use the flow monitorwith media containing solids orabrasives
– Only use the flow monitor withmedia previously approved bythe manufacturer
– Do not use the flow monitor asthe sole monitoring device toprevent dangerous conditions
– Do not install the flow monitoras a load bearing part within apipeline system
– The flow monitor must beinstalled so that it is protectedfrom damage by mechanicalforce. If necessary, install anappropriate impact protectiondevice
SafetyCorrect use in accordance with these instructions
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All claims for damages due to incorrectuse are excluded.
2.3 Special precautionsThe following section lists residualrisks which could be caused by thedevice.
To reduce health risks and preventdangerous conditions, observe thesafety instructions listed here as wellas the safety instructions in the otherchapters of these Operating Instruc-tions.
DANGER!
Employment of the device inexplosion-hazard zonesrequires the observance of theOperating Instructions for"DKM/A-2 Module ATEX"including all hazard statementsand warnings, therein.
These Operating Instructionscannot cover all conceivable dan-gers because many dangers arise,not from the device itself, but fromthe respective media flowingthrough it. Always observe theappropriate safety data sheetswhen using hazardous media!
2.3.1 Hazards from elec-trical current
Electrical current
DANGER!
Danger to life from electricalcurrent!There is an immediate risk to lifefrom electrocution on touching liveparts. Damaged electrical insula-tion or components can beextremely dangerous.
– Only qualified electriciansshall work on the electricalsystem.
– If the insulation is damaged,immediately switch off andhave repairs performed.
– Before commencing work onlive parts of the electrical sys-tems and operating equip-ment, disconnect the equip-ment and ensure that itremains disconnected for theduration of the work. Observethese 5 safety rules whendoing so:– Isolate (disconnect)– Secure against switching
back on– Check for absence of
voltage– Ground and short– Cover or cordon off other
live parts in the vicinity
SafetySpecial precautions > Hazards from electrical current
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– Never bridge fuses or putthem out of operation. Alwaysobserve the correct currentratings when replacing fuses
– Keep moisture away from liveparts. This can result in short-circuit
2.3.2 Mechanical hazards
WARNING!
Risk of injury due to fracturedhousing and leakage!Unauthorized temperatures orexcessive pressure may cause theflow monitor body or the processconnections to burst. Injury may becaused by flying debris andescaping media.
– Keep within the stipulatedoperating limits
– Wear personal protectiveequipment
– Avoid severe temperature fluc-tuations
– Avoid pressure surges
CAUTION!
Risk of injury on sharp edgesand pointed corners!Sharp edges and pointed cornerscan cause abrasions and skincuts.
– Proceed with caution whenworking near sharp edges andpointed corners
– If in doubt, wear protectivegloves
SafetySpecial precautions > Mechanical hazards
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2.3.3 Hazards from highor low temperatures
Hot or cold surfaces
WARNING!
Risk of injury from hot or coldsurfaces!Surfaces of components may heatup/cool down dramatically due tothe media flowing through them.Skin contact with hot or cold sur-faces may cause severe skin burnor frostbite.
– Always wear temperature-resistant protective workclothing and protective gloveswhen working near hot/coldsurfaces
– Before commencing work,make sure that all surfaceshave been cooled down orwarmed up to ambient temper-ature
2.3.4 Radiation hazardsStrong magnetic fields
WARNING!
Danger to life from strong mag-netic fields!Strong magnetic fields may causesevere injury or even be fatal, aswell as cause considerabledamage to property.
– Persons with pacemakersmust not be located in thevicinity of the device. Thiscould impair the function of thepacemaker
– Persons with metal implantsmust not be located in thevicinity of the device. Implantscan heat up or be attractedmagnetically
– Keep ferromagnetic materialsand electromagnets awayfrom the magnetic source.These materials could beattracted and fly through theroom, thereby injuring or evenkilling persons. Minimumclearance: 3 m
– Remove and put away metalobjects before maintenancework (jewelry, watches, writingimplements, etc.)
– Do not place any electronicdevices within the vicinity ofthe magnetic source. Thesecould be damaged
SafetySpecial precautions > Radiation hazards
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– Do not place any electronicstorage media, credit cards,etc. within the vicinity of themagnetic source. Data couldbe deleted
2.3.5 Hazards caused bymedia
Hazardous media
WARNING!
Risk of injury from hazardousmedia!If the flow monitor is used for toxic,corrosive or very hot/cold media,there is a risk of serious injury fromescaping media.
– Observe details in the safetydata sheet of the media
– Comply with the safety, acci-dent prevention and environ-mental protection regulationsappropriate to the media used
– Wear personal protectiveequipment in accordance withthe safety data sheet
2.4 Personnel require-ments
WARNING!
Risk of injury due to insuffi-ciently trained and qualified per-sonnel!If unqualified personnel work onthe device or are located within itshazard zone, dangers arise whichmay result in serious injury andconsiderable damage to property.
– All work must be performed byqualified personnel only.
– Keep unqualified personnelaway from hazard zones.
Authorized personnel is to be restrictedto those persons who can be expectedto perform their work reliably. Personswhose ability to respond is influenced,e.g. by drugs, alcohol or medication,are not authorized.
Observe the age and occupational reg-ulations at the site when choosing per-sonnel.
SafetyPersonnel requirements
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The following lists the personnel quali-fications for the various areas ofactivity:
Qualified electricianDue to specialized training, knowledgeand experience as well as knowledgeof the relevant standards and regula-tions, the qualified electrician is able toindependently perform work on theelectrical systems as well as to detectand avoid possible risks and dangers.
Additionally, the electrician must pro-vide proof of his/her professional quali-fication that certifies his/her ability toperform work on electrical systems.
The qualified electrician must fulfill therequirements contained in the validlegal accident-prevention regulations.
Qualified personnelDue to their specialized training, knowl-edge and experience as well as theirknowledge of the relevant standardsand regulations, qualified personnelare able to independently perform thework assigned to them as well as todetect and avoid possible risks anddangers.
2.5 Personal safetyequipment
Personal safety equipment is used toprotect personnel from hazards/dan-gers that might impair their safety orhealth during work.
When performing the various tasks at,and with the device, personnel mustwear personal safety equipment. Spe-cial reference is made of this in theindividual chapters within these Oper-ating Instructions. The following pro-vides a description of the personalsafety equipment:
n Always wear appropriate personalsafety equipment required in thevarious chapters of these Oper-ating Instructions before com-mencing work.
n Comply with the personal safetyequipment instructions postedwithin the work area.
Description of personal safetyequipment
Goggles
The goggles are used to protect theeyes from flying debris and splashingfluid.
Protective gloves
SafetyPersonal safety equipment
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Protective gloves protect the handsfrom friction, burns, grazing, abrasion,surface cuts or deeper injuries, as wellas from direct contact with hot or coldsurfaces.
With hazardous media, the protec-tive equipment specified in theSafety Data Sheet of the mediummust be worn. In addition, the speci-fications of the system operatormust be followed. If no protectiveequipment is specified, suitable pro-tective gloves and goggles must beworn.The protective equipment is used toprotect against hazardous media leaksand hazardous media residue in thedevice.
2.6 Protective systemsIntegration within an emergency-stop concept is required
The device is designed for use as apart of a machine or system. It doesnot have its own controller and doesnot have an autonomous emergency-stop function.
Before starting up the device, installthe emergency-stop equipment andincorporate it into the safety chain ofthe machine or system.
Connect the emergency-stop equip-ment so that if there is an interruptionin the power supply or in the activationof the power supply after an interrup-tion, dangerous conditions areexcluded for persons and valuables.
The emergency-stop equipment mustalways be freely accessible.
2.7 Replacement parts
WARNING!
Risk of injury due to use ofincorrect replacement parts!Use of incorrect or faulty replace-ment parts may result in dangersto personnel as well as damages,malfunctions or total failure.
– Only use original replacementparts from the manufacturer orapproved by the manufacturer.
– Always contact the manufac-turer in case of doubt.
SafetyReplacement parts
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Always purchase replacement partsfrom an authorized dealer or directlyfrom the manufacturer (For contactdetails, see Page 2).
The replacement parts list is in theannex.
2.8 Environmental pro-tection
NOTICE!
Risk to the environment due toimproper handling of environ-mentally hazardous substances!Serious environmental damagemay result if substances harmful tothe environment are handled incor-rectly, especially if they are dis-posed of improperly.
– Always observe the instruc-tions listed below on the han-dling and disposal of sub-stances harmful to theenvironment.
– If harmful substances arereleased into the environment,take immediate countermeas-ures. If there is doubt, contactthe local authorities, informthem of the damage andrequest information on suit-able countermeasures to betaken.
Cleaning fluids
Solvent-based cleaning fluids containtoxic substances. They must never bereleased into the environment andmust be disposed of by a waste man-agement company.
Lubricants
Lubricants such as greases and oilscontain toxic substances. They mustnever be released into the environmentand must be disposed of by a wastemanagement company.
2.9 Responsibility of theowner
Owner
The owner is the person who operatesthe device himself for business or com-mercial purposes or who cedes suchuse/application to a third-party andwho, during operation of the device,has full legal product stewardship forprotection of the user, the personnel orthird-parties.
Duties of the owner
The device is used in the commercialsector. The owner of the device istherefore subject to legal obligationspertaining to work safety.
SafetyResponsibility of the owner
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In addition to the safety instructionscontained in these Operating Instruc-tions, the safety, accident preventionand environmental protection regula-tions applicable to the field of applica-tion of the device must be observed.
In particular, this includes:
n The owner must inform himselfregarding the valid health andsafety regulations and must per-form a risk assessment to addition-ally determine the risks resultingfrom the special work conditionsarising at the location at which thedevice is used, especially in regardto the media used. He must thenimplement these within OperatingInstructions for use of the device.
n For USA:The "Occupational Health andSafety Act" of 1970 stipulates thatit is the duty of the owner to pro-vide a safe workplace. He musthereby ensure that the device isoperated and maintained com-pliant to valid commercial, indus-trial, local, federal and state laws,standards and regulations.
n For Canada:The Canadian Centre for Occupa-tional Health and Safety Act of1978 stipulates that all Canadianshave “…a fundamental right to ahealthy and safe working environ-ment.” It is therefore the duty ofthe owner to provide a safe work-place. He must ensure that the
device is operated and maintainedcompliant to valid commercial,industrial, local, provincial, territo-rial and federal laws, standardsand regulations.
n Appropriate to the working condi-tions and the media used, theowner must affix signs within theworking area that inform the userof the hazards and dangerspresent.
n During the entire period of use ofthe device, the owner must checkperiodically to ensure that theOperating Instructions correspondto the current state of regulations,and he must make adjustments asnecessary.
n The owner must clearly regulateand determine responsibilities forinstallation, operation, trouble-shooting, maintenance andcleaning.
n The owner must fit/retrofit suitablesafety equipment within the com-plete plant/system.
n The owner must ensure that allstaff/personnel have thoroughlyread and understand these instruc-tions before handling the device.Additionally, he must train the per-sonnel at regular intervals andwarn them of dangers.
n The owner must provide the per-sonnel with the required safetyequipment and must instruct themthat its wear is mandatory.
Additionally, the owner is responsiblefor ensuring that the device is alwayskept in a technically perfect condition.The following therefore applies:
SafetyResponsibility of the owner
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n The owner must implement suit-able safety measures, appropriateto the media used.
n Different media have differentseverities of influence on thesoiling and wear of/to the device.The owner must set suitable main-tenance intervals, depending onthe media flowing through thedevice.
n The owner must ensure that themaintenance intervals described inthese Operating Instructions areadhered to at all times.
n The owner must ensure that thedevice is completely free of allresidual media before disposal.Remains of corrosive or toxicmaterials must be neutralized.
SafetyResponsibility of the owner
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3 Design and function3.1 Overview
Fig. 2: Overview
1 Process connection (outlet)2 Device body3 Switch contact and female socket
or switch contact with cable4 Switchpoint adjustment scale (not
visible in this view)5 Indicator housing with indicator
scale and pointer6 Process connection (inlet)
3.2 Device descriptionDKM/A-2 flow monitors work on theprinciple of the variable area flowmeter. The flow monitor is installed intoa pipe system and measures the flowrate of the medium flowing through thepipe system.
A float inside the flow monitor is movedby the flowing medium. A magneticfield is generated by the magnetsinside the float. The position of the floatis detected by the switch contact. Thedesired switch point can be set on theswitch point adjustment scale bymoving the switch contact. The pointeron the indicator scale shows the actualflow rate.
Applications for DKM/A-2 flow monitorsare for example lubricating circuits.The volume flow of the lubricatingmedium is monitored by the flow mon-itor to ensure it is high enough forproper lubrication. If the flow throughthe flow monitor drops below thethreshold set by the operator, theswitch contact switches (Change-overContact) or opens the contact (Nor-mally Open Contact).
Design and functionDevice description
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3.3 Component descrip-tion
Switch contact
Fig. 3: Switch contact and femalesocket
A potential-free Reed contact is castinto the switch contact ( Fig. 3/1). Thedevice is supplied with a connector (Fig. 3/2).
Switch point adjustment scale
Fig. 4: Switch point adjustment scale
A scale is applied to the device body,to which the desired switch point canbe adjusted.
Design and functionComponent description
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Indicator scale
Fig. 5: Indicator scale
On the device, a display housing ismounted with integral indicator scaleand pointer. The pointer displays thecurrent flow value.
Design and functionComponent description
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4 Transport, packaging and storage4.1 Safety instructions
for transport
Improper transport
NOTICE!
The device could be damaged iftransported improperly!Objects to be transported may fallor overturn if transported improp-erly. This may result in damage tothe device and/or property.
– Proceed carefully whenunloading transported pack-ages, both on delivery andwhen transporting in-house.Observe the symbols andinstructions on the shippingbox
– Remove packaging materialjust prior to assembly
4.2 Transport inspec-tion
On delivery, make an immediate checkfor completeness and check for trans-port damages.
If there are any visible external trans-port damages, proceed as follows:
n Do not accept the deliveryn Note the damage in the shipping
documents or on the delivery noteof the transporter and have thedriver confirm by signature
n Initiate a claim for damages
Make a claim for each fault assoon as it is detected. Claims fordamages can only be invokedwithin the valid claim periods.
4.3 PackagingAbout packaging
The packaging serves to protect theindividual components from transportdamages, corrosion and other dam-ages until they are installed. Do notdiscard the packaging and only removethe device from the shipping boximmediately before installation.
Transport, packaging and storagePackaging
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Handling packaging materials
Dispose of packaging material inaccordance with the valid legal regula-tions and local ordinances.
NOTICE!
Danger to the environment dueto incorrect disposal!Packaging is made of valuable rawmaterials and can be reused inmany cases or usefully processedand recycled. Improper disposal ofpackaging materials may pose adanger to the environment.
– Dispose of packaging materialin an environmentally safemanner
– Comply with the local disposalregulations. If necessary, havethe packaging disposed of byapproved specialists.
4.4 Symbols on theshipping box
Top
The arrows indicate the top side of thepackage. They must always pointupwards, otherwise the content may bedamaged.
Fragile
Designates packages with breakableor damageable contents.
Handle the package carefully and donot allow it to fall or be subjected to jar-ring or severe vibration.
4.5 StorageStoring the packages
Store the packages under the followingconditions:
n Do not store in the openn Store dry and dust-freen Do not subject to any aggressive
median Protect from direct sunlightn Avoid mechanical vibrations and
shocksn Storage temperature: 0 to 35 °Cn Relative humidity: max. 60 %n Do not stackn If storing for longer than 3 months,
regularly check the general condi-tion of all parts as well as of thepackaging.
Transport, packaging and storageStorage
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Storage instructions in addition tothe instructions listed here may belisted on the packages. Followthese instructions also.
Transport, packaging and storageStorage
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5 Installation and initial startup5.1 SafetyIncorrect installation and initialstartup
WARNING!
Risk of injury due to incorrectinstallation and initial startup!Incorrect installation and initialstartup may result in severe injuryand considerable damage to prop-erty.
– Ensure that the site is suffi-ciently cleared of obstructionsbefore commencing work
– Handle open or sharp edgedcomponents carefully
– Ensure that the assemblylocation is orderly and clean!Parts and tools lying about oron top of each other arepotential causes for accidents
– Assemble components prop-erly. Observe the stipulatedtightening torque of screws
– Before initial startup, makesure that all installation workhas been performed and com-pleted in compliance with thespecifications and instructionsin these Operating Instructions
Safeguard against restart
WARNING!
Danger to life due to unauthor-ized restart!There is a risk of severe or evenfatal injury due to unauthorizedrestart of the power supply duringinstallation.
– Before commencing work,switch off the power supply tothe entire system/plant andsecure against restart
5.2 Requirements at theplace of installation
The place of installation must meet thefollowing requirements
n The device must not be underwater.
n The surrounding area must be suf-ficiently illuminated.
n There must be sufficient space toprevent accumulation of trappedheat.
n The device must not be installedas a supporting part in a pipe con-struction.
n The device may not have anythingaffixed to, or suspended from it.
Installation and initial startupRequirements at the place of installation
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n The flow monitor must be installedin such a way as to precludedamage by outside force. It mustbe ensured that the flow monitorcannot be damaged. If necessary,install an appropriate impact pro-tection device.
n External magnetic fields will influ-ence the switch contact. Keep suf-ficient distance to magnetic fields(e.g. electric motors).
n Piping, process connections orsupports made from ferromagneticmaterial influence the magneticfield of the device. Keep a spaceof minimum 100mm to those mate-rials (e.g. steel).
5.3 Preparatory workThe following criteria must be metduring installation to ensure correctfunctioning of the flow monitor:
WARNING!
Danger due to incorrect installa-tion!If the criteria listed above are notmet when installing the flow mon-itor, dangerous/hazardous condi-tions may arise.
– Do not install the flow monitoras a load bearing part in apipe system
– Do not use the flow monitorwith quick-acting valves
– Do not use the flow monitorwith solenoid valves
Installation and initial startupPreparatory work
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Installation position/direction of flow
Fig. 6: Installation position/direction of flow
Only install the flow monitor in one of the positions displayed in the drawing. Themedium must flow in the direction of the arrow (from a low to a high scale value).
Installation and initial startupPreparatory work
03.08.2016DKM/A-2 Module BASICS Flow Monitor28
Unimpeded flow sections
NOTICE!
Measuring inaccuracy due toincorrect installation!The measuring accuracy of theflow monitor is influenced by itsposition within the pipe system.Changes in cross-section, branch-offs or bends in the pipe systemimpair measuring accuracy.
– Ensure that the unimpededflow sections are maintained
– Never reduce the pipe diam-eter immediately before thedevice
We recommend unimpeded flowsections, type BS-228.
Fig. 7: Unimpeded flow sections
1 10x DN2 5x DN
n There must be an unimpeded flowsection of 10xDN (rated width)before the device.
n There must be an unimpeded flowsection of 5xDN (rated width) afterthe device.
Installation and initial startupPreparatory work
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 29
Unimpeded outlet
Fig. 8: Unimpeded outlet
If the pipe system ends at an unimpeded outlet, the flow monitor must not beinstalled directly in front of the opening. The device must always be completelyfilled with medium to ensure measuring accuracy.
Installation and initial startupPreparatory work
03.08.2016DKM/A-2 Module BASICS Flow Monitor30
Strainer
Fig. 9: Strainer
1 min. 10x DN2 min. 5x DN
If the medium is contaminated bysolids, a strainer must be installedbefore the device ( Ä “Strainer”on page 31).
We recommend a Type SF. SFDor SFM strainer.
Prepare the device
NOTICE!
Risk of damage to property dueto contamination!Contamination and deposits mayimpair the free movement of thefloat, thereby damaging thedevice.
– Ensure that there are no for-eign particles in the device
– Ensure that the device is notsoiled
– Do not use any medium con-taining solids
Due to quality assurance meas-ures, there may be some testmedium (water) residue in thedevice.
1. Unpack the device and visuallyinspect the device to ensure thatit is free of packaging materials
2. Examine the device for residueof test medium and drain, if nec-essary
3. Check the device for soiling andflush with clean medium, if nec-essary
Installation and initial startupPreparatory work
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 31
5.4 Installation in thepipe system
WARNING!
Risk of injury from pressurizedpipes!If the pipe system is under pres-sure when installing the device,severe injuries may result.
– Depressurize the pipe systembefore installing the device
WARNING!
Risk of injury from hot or coldsurfaces!Pipelines can heat up/cool downdramatically due to the mediaflowing through them. Skin contactwith hot or cold surfaces maycause severe skin burn or frostbite.
– Before commencing work,ensure that the system hasbeen controlled to a tempera-ture range between 0 und 40°C.
– Do not touch any parts of thesystem that are either very hotor very cold.
– Always wear heat-resistant/cold-resistant protectiveclothing and protective gloveswhen working near hot/coldsurfaces
Installation and initial startupInstallation in the pipe system
03.08.2016DKM/A-2 Module BASICS Flow Monitor32
WARNING!
Risk of injury from media in thepipe system!If the pipe system contains haz-ardous media, severe injuries maybe caused by escaping media.
– Before installation, ensure thatthe pipe system is empty anddoes not contain any mediaresidue
– Always wear personal protec-tive equipment during installa-tion
– Provide suitable drainingdevices (collection tanks, etc.)
NOTICE!
Risk of damage to the devicedue to contamination in the pipesystem!Dirt and foreign particles enteringthe device can damage the deviceand impair its operation.
– Ensure that the pipe system isclean before installing thedevice
– If necessary, flush the pipesystem with clean mediumbefore installation
A suitable sealant must beselected depending on the condi-tion/composition of the pipe lines,the medium and the operating andenvironmental conditions. Thesealing method described here isonly an example and cannot beused in all cases.
Installation and initial startupInstallation in the pipe system
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Sealing the pipe connections
Personnel:n Qualified personnel
1. Nap the thread.
Fig. 10: Apply sealing thread
2. Apply sealing thread ( Fig. 10/1)to the napped thread in thethreaded direction. Observe thequantity recommended by thesealant manufacturer.
Fig. 11: Pipe connection with sealingthread
ð The pipe line is now readyfor installation ( Fig. 11)
Installation and initial startupInstallation in the pipe system
03.08.2016DKM/A-2 Module BASICS Flow Monitor34
Install device in pipe system
Personnel:n Qualified personnel
Protective equipment:n Protective gloves
Tools:n Open-end wrench
CAUTION!
Do not hold the device by itsthreads. These are sharp edgedand may cause injury.
1. Start the threaded end of thedevice onto the thread of theconnecting pipe
Fig. 12: Screw in the device
2. Fasten the adapter union of thepipeline with an appropriatespanner ( Fig. 12/2). Whendoing so, lock the process con-nector in place to prevent slip,using a suitable spanner (Fig. 12/1).
Fig. 13: Screw in the device
3. Keep turning in the adapterunion ( Fig. 13/1) while holdingthe process connection of thedevice locked ( Fig. 13/2) untilthe connection is tight.
4. Repeat these steps at the otherend of the device
Installation and initial startupInstallation in the pipe system
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 35
5.5 Initial startupThe following steps must be takenbefore initial startup and any subse-quent startup (e.g. after removal andinstallation during maintenance).
1.
WARNING!
Make sure that the plant isoperating vibration-free.Vibrations could destroy thedevice. This may result in aserious risk of injury to theuser.
2.
WARNING!
Make sure that the mediumis flowing continuously.Pulse-like staggered loadscould destroy the device.This may result in a seriousrisk of injury to the user.
3.
NOTICE!
Completely fill the pipelines.Partial filling(s) may result inmalfunctions and damage tothe device.
4.
NOTICE!
Vent the pipeline. If thereare air bubbles in the lineduring the measurement,this could result in damageto the device caused byhydraulic shock. This maycause malfunctions.
5.
NOTICE!
Make sure that the plant isoperating without cavitation.Cavitation may result in mal-functions and damage to thedevice.
Installation and initial startupInitial startup
03.08.2016DKM/A-2 Module BASICS Flow Monitor36
5.6 Electrical connec-tion
The electrical connection of the flowmonitor is accomplished through theconnector plug or the cast on powercable leading from the switch housing.The switch contacts employed in thesedevices are potential free and do notrequire a power source. Switch con-tacts and flow monitor have been opti-mally harmonized. After replacement ofa switch contact, the switch point mustbe readjusted.
DANGER!
Danger to life from electricalcurrentThere is an immediate risk to lifefrom electrocution on touching liveparts. Damage to the electricalinsulation or single componentscan be extremely dangerous.
– Only qualified electriciansshall work on the electricalsystem
– If the insulation is damaged,immediately switch off andhave repairs performed.
– Before commencing work onlive parts of electrical systemsand components, disconnectthe equipment and ensure thatit remains disconnected for theduration of the work. Observethese 5 safety rules whendoing so:– Isolate (disconnect)
– Secure against switchingback on
– Check for absence ofvoltage
– Ground and short– Cover or cordon off other
live parts in the vicinity– Never bridge fuses or put
them out of operation. Alwaysobserve the correct currentratings when replacing fuses
– Keep moisture away from liveparts. This may result in short-circuit
5.6.1 Switch contactSG-15 with con-nector in compli-ance withEN175301-803
Wiring diagram of the suppliedsocket (EN 175301-803, Form C)front view.
Wiring diagram
normally open:
Fig. 14: Switch position under no-flowcondition
Installation and initial startupElectrical connection > Switch contact SG-15 with connector in compliance with EN175301-803
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 37
Fig. 15: Pin assignment, plug socket,normally-open contact. The ground-pinis not used.
change over:
Fig. 16: Switch position under no-flowcondition
Fig. 17: Pin assignment, plug socket,change-over contact. The ground-pin isnot used.
5.6.2 Plug connectorM12x1
Wiring diagram, connector M12x1
Installation and initial startupElectrical connection > Plug connector M12x1
03.08.2016DKM/A-2 Module BASICS Flow Monitor38
Fig. 18: Pin assignment, connectorM12x1 (Form 15x50)
Wiring diagram
Normally open:
Fig. 19: Switch position under no-flowcondition
Change-over:
Fig. 20: Switch position under no-flowcondition
5.6.3 CableThe individual cores of the cable arenumbered according to the followingconnection diagram.
Wiring diagram
normally open:
Fig. 21: Switch position under no-flowcondition
Installation and initial startupElectrical connection > Cable
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 39
5.6.4 Degree of protection(IP-Code)
The specified degree of protection (IP)is only ensured if approved connectionmaterial is used (see following table).
Deviceconnec-tion
Specifi-cationof con-nectionmaterial
Degree ofprotection
EN175301-803withgland
Diameterof con-nectioncable: 5–6mm
IP65
M12x1 Plugcon-nectorM12x1
IP65
Cable - IP67
5.7 Grounding thedevice
When installing the device in a pipesystem, ensure that the device isgrounded to the pipe system to avoid adangerous electrical potential differ-ence.
5.8 Plug connection
Personnel:n Qualified electrician
Tools:n Flat-bladed screwdriver
Fig. 22: Detach socket
1. Release fixing screw ( Fig. 22)from the socket
Fig. 23: Remove socket
2. Remove socket ( Fig. 23)
Installation and initial startupPlug connection
03.08.2016DKM/A-2 Module BASICS Flow Monitor40
Fig. 24: Disconnect inner section
3. Remove the inner section fromthe socket by inserting a flat-bladed screwdriver into the slot (Fig. 24/1) and carefully pry outthe inner section.
Fig. 25: Remove the screw connection
4. Remove the screw connection (Fig. 25/1) by turning to the left.
5. Guide the connection cablethrough the screw connectioninto the socket
6. Make the connections as shownin the connection diagram (Fig. 26 und Fig. 27)
7. Place the inner section ( Fig. 24)back into the socket and pushuntil it locks on
8. Re-tighten the screw connection( Fig. 25/1) by turning it to theright until tight.
Installation and initial startupPlug connection
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 41
9. Place the socket onto the con-nection plug and tighten thefixing screw ( Fig. 22)
Fig. 26: Pin assignment, plug socket,Normally Open Contact (Form 15x50)
Fig. 27: Pin assignment, plug socket,Change-over contact (Form 15x50)
5.9 Contact protectionmeasures
The Reed-switches used in the switchcontacts are designed to be very sensi-tive to overload. To prevent destructionof the switch contact, the values speci-fied on the rating plate of the switchcontact must never be exceeded (noteven temporarily).
There is a risk of overload from:
n inductive loadsn capacitive loadsn ohmic loads.
Suitable measures must be taken toprotect against overload (see followingexamples):
Installation and initial startupContact protection measures
03.08.2016DKM/A-2 Module BASICS Flow Monitor42
Inductive load
There is danger of voltage peaks frominductive loads when switching off (upto 10 times the rated voltage). Induc-tive loads are caused by, e.g.:
n Contactors, relaysn Solenoid valvesn Electric motors
Examples of protective measures:
Fig. 28: Example 1
Fig. 29: Example 2
Capacitive loads
There is a danger of high currentpeaks from capacitive loads whenswitching-on the switch contact(exceeding rated current). Capacitiveloads are caused by, e.g.:
n Long connecting cablesn Capacitive consumers
Example of protective measure:
Fig. 30: Protective measure againstcapacitive loads
Ohmic loads
There is a danger of high currentpeaks from ohmic loads whenswitching-on the switch contact. Thereason for this is that the glow filamenthas a low resistance at low tempera-tures. Ohmic loads are caused by, e.g.:
n Filament bulbsn Motors during startup
Examples of protective measures:
Fig. 31: Example 1
Fig. 32: Example 2
Installation and initial startupContact protection measures
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 43
Protection against ohmic loads can beachieved through installation of aresistor in the circuit, or by heating theglow filament. For connection to high-impedance consumers (ex. PLC), aprotective circuit is not needed.
Installation and initial startupContact protection measures
03.08.2016DKM/A-2 Module BASICS Flow Monitor44
6 Operation6.1 Setting the switch
pointSetting the switch point of aninstalled device
The following instructions describethe procedure for a Normally OpenContact (NOC). The actual state(open or closed) can be deter-mined using a continuity meter.
Personnel:n Qualified personnel
Tools:n Hex screwdriver
Fig. 33: Loosen set screw
1. Loosen the switch contact setscrew ( Fig. 33/1) using a hexscrewdriver.
2. Slide the switch contact to theflow value to be monitored.Make sure that the arrow on theswitch contact label is in exactalignment with the desired flowvalue on the scale on the devicebody.
3. Re-tighten the switch contact setscrew ( Fig. 33/1) using a hexscrewdriver. Observe the correcttightening torque.
ð The set switch point corre-sponds to the switch-offpoint of the switch contactby decreasing flow.
OperationSetting the switch point
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 45
Setting the switch point of a non-installed device
Fig. 34: Loosen set screw
1. Loosen the switch contact setscrew( Fig. 34/1) using a hexscrewdriver.
2. Slide the switch contact to theflow value to be monitored.Make sure that the arrow on theswitch contact label is in exactalignment with the desired flowvalue on the scale on the devicebody.
3. Re-tighten the switch contact setscrew ( Fig. 34/1) using a hexscrewdriver. Observe the correcttightening torque..
Ä Chapter 11.1 “Tighteningtorque” on page 80
ð The set switch point corre-sponds to the switch-offpoint of the switch contactby decreasing flow.
OperationSetting the switch point
03.08.2016DKM/A-2 Module BASICS Flow Monitor46
6.2 Checking the flowReading-off the flow value
Personnel:n Qualified personnel
Protective equipment:n Goggles
Fig. 35: Reading-off the flow value
1. Make sure that the setting arrowand the scale mark on thedevice body are in alignment. (Fig. 35).
2. Look straight on. By viewing atan angle from above or belowthe reading can be falsified (Par-allax error).
3. Read-off the switch value fromthe scale on the device body.
Reading-off the display value
Personnel:n Qualified personnel
Protective equipment:n Goggles
Fig. 36: Reading-off the display value
1. Make sure that the pointer andthe scale mark of the displayscale are in alignment. ( Fig. 36).
2. Look straight on. By viewing atan angle from above or belowthe reading can be falsified (Par-allax error).
3. Read-off the display value fromthe display scale.
OperationChecking the flow
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 47
7 ToubleshootingThis chapter describes possible mal-functions of the device, their causesand repair.
If malfunctions persist or increase,shorten the maintenance interval tomeet the actual operating conditions.
For malfunctions not described in thischapter, please contact the manufac-turer (see service address on page 2).
7.1 SafetyWork performed incorrectly toremedy a malfunction
WARNING!
Risk of injury due to incorrectrepair of malfunction!Work performed incorrectly mayresult in severe injury and consid-erable damage to property.
– Ensure that the site is suffi-ciently cleared before com-mencing work
– Ensure that the repair locationis orderly and clean! Compo-nents and tools that are lyingabout or on top of each otherare potential causes of acci-dents
– If components have beenremoved, observe correctassembly procedures. Rein-stall all fixing/fastening ele-ments and observe the pre-scribed tightening torque forthe screwsÄ Chapter 11.1 “Tighteningtorque” on page 80
– Before placing the device backinto operation, ensure that allwork has been performed andcompleted in compliance withthe specifications and instruc-tions in these OperatingInstructions
ToubleshootingSafety
03.08.2016DKM/A-2 Module BASICS Flow Monitor48
Conduct in case of malfunction
The complete machine or system maybe unsafe if there is a defect at the flowmonitor (e.g. fractured housing).
The following always applies:
1. In case of malfunctions thatpresent an immediate danger topersons or valuables, proceedaccording to the valid emer-gency plans for the system
2. Determine the cause of the mal-function
3. Before repair, ensure that thereis no danger to persons fromescaping media
4. If necessary, allow the pipelineand device to cool down or towarm up before commencingwork
5. Malfunctions must be correctedby qualified personnel
The following troubleshootingguide provides an indication ofwho is qualified to repair the fault .
ToubleshootingSafety
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 49
7.2 Troubleshooting guideFault description Cause Remedy Personnel
The switch contactdoes not switch.
No mediumflowing throughflow monitor
Check that medium isflowing through the pipe-line
Qualifiedpersonnel
Flow is too low orthe switch con-tact is set toohigh
n Adjust the switchcontact to a lowerflow rate
n Use the device atanother measuringrange
n Increase the flowrate
Qualifiedpersonnel
Incorrect reduc-tion fitting or pipediameter is toosmall
n Correct pipe diam-eter
Qualifiedpersonnel
Float is stuck Disassemble and cleanthe device
Qualifiedpersonnel
Switch contact isdefective.
n Remedy the cause ofthe defect (short-cir-cuit, overload)
n Replace the switchcontact
Qualifiedpersonnel
Switch contact ispermanentlyswitched.
Flow is too highor the switchcontact is set toolow
n Reduce the flown Adjust the switch
contact to a higherflow rate
n Use the device atanother measuringrange
Qualifiedpersonnel
ToubleshootingTroubleshooting guide
03.08.2016DKM/A-2 Module BASICS Flow Monitor50
Fault description Cause Remedy Personnel
Float is stuck Disassemble and cleanthe device
Qualifiedpersonnel
Switch contact isdefective
n Remedy the cause ofthe defect (short-cir-cuit, overload)
n Replace the switchcontact
Qualifiedpersonnel
The switch point isnot the same asthe actual flow rate.
Improper scaleinstalled formedia used
Request proper conver-sion table or scale formedia used
Qualifiedpersonnel
Incorrect reduc-tion fitting or pipediameter is toosmall
n Correct pipe diam-eter
Qualifiedpersonnel
Device is dirty Disassemble and cleanthe device
Qualifiedpersonnel
Device is defec-tive
Remove device fromsystem and contact themanufacturer
Qualifiedpersonnel
ToubleshootingTroubleshooting guide
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 51
8 Maintenance8.1 SafetyMaintenance work performed incor-rectly
WARNING!
Risk of injury due to mainte-nance work performed incor-rectly!Maintenance work performedincorrectly may result in severeinjury and considerable damage toproperty.
– Ensure that the site is suffi-ciently cleared before com-mencing work.
– Ensure that the repair locationis orderly and clean! Compo-nents and tools that are lyingabout or on top of each otherare potential causes for acci-dents.
– If components have beenremoved, observe correctassembly procedure. Reinstallall fixing/fastening elementsand observe the prescribedtightening torque for thescrews (see Chapter 11.1).
– Before placing the device backinto operation ensure that allwork has been performed andcompleted in compliance withthe specifications and instruc-tions in these OperatingInstructions.
8.2 Maintenance planIntervals for replacing wear parts
DKM/A-2 type flow monitors requirevery little maintenance due to the smallnumber of moving parts. The intervalsfor the replacement of wear partsdepend significantly on the operatingconditions as well as on the composi-tion of the medium flowing through thedevice. For this reason, no intervalshave been set by the manufacturer.The operator must determine suitableintervals based on the local conditionsand circumstances.
MaintenanceMaintenance plan
03.08.2016DKM/A-2 Module BASICS Flow Monitor52
Interval Maintenance work Personnel
Visual inspection for dirt/soiling Qualified personnel
Visual inspection for free-movement of float anddisplay pointer mechanism
Qualified personnel
Visual inspection for leaks from the device Qualified personnel
Check function of switch contact Qualified personnel
8.3 Removal from thepipe system
The flow monitor must first be removedfrom the pipe system before per-forming maintenance.
WARNING!
Risk of injury from pressurizedlines!Severe injury may result if the pipesystem is under pressure whenremoving the device.
– Depressurize the systembefore removing the device
WARNING!
Risk of injury from hot or coldsurfaces!Pipelines can heat up/cool downdramatically due to the mediaflowing through them. Skin contactwith hot or cold surfaces causessevere skin burn or frostbite.
– Before removing the device,ensure that the machine orsystem and the flow monitorhave been controlled to a tem-perature range between 0 and40°C
– Do not touch any part of themachine or system that iseither very hot or very cold
– Always wear heat-resistant/cold-resistant protective workclothing and protective gloveswhen working near hot/coldsurfaces
MaintenanceRemoval from the pipe system
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 53
WARNING!
Risk of injury from media in thepipe system!If the pipe system contains haz-ardous media, severe injury maybe caused by escaping media.
– Before removing the device,ensure that the pipe system isempty and does not containmedia residue
– Always wear personal protec-tive equipment when removingthe device
WARNING!
Risk of injury from media res-idue in the device!After the pipe system has beenemptied, media residue may stillbe present inside the device. In thecase of hazardous media, thiscould result in serious injury.
– When removing (de-installingthe device from the pipesystem), always wear per-sonal protective equipment.
– All requirements specified inthe media safety data sheetmust be observed in accom-plishing the work task.
– Residue of hazardous mediain the device can result inserious injury.
Removing the device from the pipesystem
Personnel:n Qualified personnel
Protective equipment:n With hazardous media, the protec-
tive equipment specified in theSafety Data Sheet of the mediummust be worn. In addition, thespecifications of the system oper-ator must be followed. If no protec-tive equipment is specified, suit-able protective gloves and gogglesmust be worn.
Tools:n Fixed spanner
1. Loosen the adapter union of thepipeline using a suitablespanner. When doing so, lockthe process connection ordevice body in place with asecond spanner.
2. Secure the device against fallingand repeat Step 1 at the otherprocess connection.
8.4 DisassemblyTo replace wear parts or to clean thedevice, the flow monitor must first bedisassembled.
MaintenanceDisassembly
03.08.2016DKM/A-2 Module BASICS Flow Monitor54
WARNING!
Risk of injury due to incorrectdisassembly!– The device may still contain
media residue– Wear personal protective
equipment when working withdangerous media residue
– Improper disassembly maycause serious injuries if dan-gerous media is still presentinside the device
CAUTION!
Risk of injury due to incorrectdisassembly!Incorrect disassembly may resultin injuries.
– Before disassembling, ensurethat the flow monitor hascooled down/warmed up to atemperature range between 0and 40° C.
– Wear personal protectiveequipment to protect againsthazardous media which maystill be present inside thedevice.
Protective equipment:n With hazardous media, the protec-
tive equipment specified in theSafety Data Sheet of the mediummust be worn. In addition, thespecifications of the system oper-ator must be followed. If no protec-tive equipment is specified, suit-able protective gloves and gogglesmust be worn.
Personnel:n Qualified personnel
Protective equipment:n Gogglesn Protective gloves
Tools:n Flat-bladed screwdrivern Open-end wrenchn Socket wrench
Special tools:n Threaded ring insertion tool
Fig. 37
MaintenanceDisassembly
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 55
1. Remove fixing screws from thedisplay housing cover ( Fig. 37)
Fig. 38
2. Carefully remove the displayhousing cover plate and plastichousing from the display baseplate by lifting straight up.(Fig. 38) Take care not todamage the pointer mechanism.
Fig. 39
3. Press out the display cover platefrom the plastic housing (Fig. 39)
Fig. 40
4. Pull the scale support (withaffixed scale) from the guides inthe plastic housing ( Fig. 40)
Fig. 41
5. Loosen fixing screws from thedisplay base plate ( Fig. 41) thenremove the display base platefrom the device.
MaintenanceDisassembly
03.08.2016DKM/A-2 Module BASICS Flow Monitor56
Fig. 42: Loosen process connection(outlet)
6. Loosen the process connection(outlet) ( Fig. 42) using theproper sized fixed spannerwrench. Hold the device body inplace using a proper sizedspanner wrench.
Fig. 43: Remove the process connec-tion (outlet)
7. Unscrew the process connection(outlet) from the device body (Fig. 43). If necessary, removethe O-ring from the process con-nection.
MaintenanceDisassembly
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 57
Fig. 44: Insert threaded ring insertiontool (outlet)
8. Insert the threaded ring insertiontool into the device outlet (Fig. 44) and turn until it rests inthe keyway of the threaded ring
Fig. 45: Loosen threaded ring (outlet)
9. Insert socket wrench into thethreaded ring insertion tool andloosen the threaded ring (Fig. 45). Hold the device body inplace using a proper sizedspanner wrench.
MaintenanceDisassembly
03.08.2016DKM/A-2 Module BASICS Flow Monitor58
Fig. 46: Remove threaded ring (outlet)
10. Unscrew the threaded ring(outlet) from the device body Fig. 46)
Fig. 47: Remove inner parts
11. Carefully turn the device body180° and remove the inner parts(float, magnets and spring) (Fig. 47)
Fig. 48: Spring, magnets and float
12. The inner parts of the flow mon-itor consist of the spring (Fig. 48/3), magnets (Fig. 48/2)and float ( Fig. 48/1).
MaintenanceDisassembly
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 59
Fig. 49: Loosen process connection(inlet)
13. Loosen the process connection(inlet) ( Fig. 49) using the propersized fixed spanner wrench.Hold the device body in placeusing a proper sized spannerwrench.
Fig. 50: Remove process connection(inlet)
14. Unscrew the process connection(inlet) from the device body (Fig. 50). If necessary, removethe O-ring from the process con-nection.
O-ring replacement
It is recommended that the O-ringsbe replaced during maintenance.
8.5 Maintenance
MaintenanceMaintenance
03.08.2016DKM/A-2 Module BASICS Flow Monitor60
8.5.1 CleaningIt is the responsibility of the operator toestablish appropriate intervals and pro-cedures for cleaning the individualparts of the device. It must be ensuredthat the parts are not damaged duringthe cleaning process. When usingcleaning agents, it must be ensuredthat these are not aggressive to theparts and that there will be no dan-gerous reactions with the media res-idue. Damaged parts must bereplaced.
WARNING!
Risk of injury due to impropercleaning!The device may still contain mediaresidue.
– To protect against hazardousmedia residue in the device,wear personal protectiveequipment
– Do not use cleaning agentswhich may lead to dangerousreactions with media residue
– All requirements specified inthe safety data sheets must beobserved when handling orotherwise using the medium
– Residue of hazardous mediainside the device can causeserious injury
CAUTION!
Risk of injury due to damagedparts!If parts of the device are broken ordamaged, they may cause injurydue to sharp edges or splintersduring the cleaning process.
– Damaged parts must bereplaced
– Carefully clean the parts of thedevice, so as not to causedamage
– When cleaning, always wearappropriate personal protec-tive equipment
– Incorrect disassembly canresult in injuries
MaintenanceMaintenance > Cleaning
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Protective equipment:n With hazardous media, the protec-
tive equipment specified in theSafety Data Sheet of the mediummust be worn. In addition, thespecifications of the system oper-ator must be followed. If no protec-tive equipment is specified, suit-able protective gloves and gogglesmust be worn.
8.5.2 Parts replacementDepending on the operating conditions,wear parts such as O-rings, float ormagnets may have to be replaced.Steps required to replace these partscorrespond to those used whenassembling the device Ä Chapter 8.5.3“Assembly” on page 62.
8.5.3 AssemblyAfter cleaning the individual compo-nents, the flow monitor must be reas-sembled.
Personnel:n Qualified personnel
Tools:n Flat-bladed screwdrivern Torque screwdriver and assorted
bladesn Open-end wrenchn Socket wrenchn Torque wrench
Special tools:n Threaded ring insertion tooln Test rodn O-Ring installation tooln Magnetic pole indicator
Fig. 51: O-ring (seal)
MaintenanceMaintenance > Assembly
03.08.2016DKM/A-2 Module BASICS Flow Monitor62
1. Carefully install the O-rings (Fig. 51/2) with the aid of the O-ring installation tool ( Fig. 51)onto both process connections(inlet and outlet), so that theyare properly seated in the O-ringgrooves of the process connec-tion ( Fig. 52). When doing so,be careful not to overstretch theO-rings.
Fig. 52: Properly positioned O-ring
2. Position the O-ring properly onthe process connection (Fig. 52).
3. Lubricate the O-rings lightly.
A list of suitable lubricants iscontained in the annexÄ Chapter 11.5 “Lubricants”on page 83.
Fig. 53: Insert process connection(inlet)
4. Insert the process connection(inlet) into the device body (inlet)( Fig. 53).
MaintenanceMaintenance > Assembly
03.08.2016 DKM/A-2 Module BASICS Flow Monitor 63
Fig. 54: Tighten process connection(inlet)
5. Using a proper sized fixedspanner, tighten the processconnection (inlet). Hold thedevice body in place using asuitable fixed spanner ( Fig. 54),and observe the proper torque (Ä Chapter 11.1 “Tighteningtorque” on page 80).
Fig. 55: Inner parts
6. Insert spring ( Fig. 55/3) withmagnets ( Fig. 55/2) into thefloat ( Fig. 55/1) ensuring propermagnetic pole orientation (northpole toward device outlet).
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Fig. 56: Insert inner parts
7. Insert float with magnets andspring into the device body (Fig. 56).
Fig. 57: Insert threaded ring (outlet)
8. Insert the threaded ring (outlet)into the device body (outlet) (Fig. 57).
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Fig. 58: Seat threaded ring (outlet)
9. Lightly seat the threaded ring(outlet) with the aid of thethreaded ring insertion tool andtighten with a torque wrench (Fig. 58), observing the propertorque ( Ä Chapter 11.1 “Tight-ening torque” on page 80).
Fig. 59: Insert process connection(outlet)
10. Insert the process connection(outlet) into the device body(outlet) ( Fig. 59).
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Fig. 60: Tighten process connection(outlet)
11. Using a proper sized fixedspanner, tighten the processconnection (outlet). Hold thedevice body in place using asuitable fixed spanner ( Fig. 60),and observe the proper torque (Ä Chapter 11.1 “Tighteningtorque” on page 80).
Fig. 61: Check for smooth operation
12. Check the float for ease ofmovement ( Fig. 61) by applyinglight pressure with the test rod.
ð If the float moves sluggishly,then disassemble the deviceÄ Chapter 9.2 “Disas-sembly” on page 72 andclean the float and devicebody bore.
If the float is still slug-gish after having beencleaned several times,contact the manufac-turer.
Fig. 62
13. Position the display base plateonto the device body and lightlytighten the fixing screws so thatthe base plate can still be moved( Fig. 62). Make sure that the
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countersunk head screw is usedfor the long groove (pointer end)and the cylinder head screwsare used to secure the baseplate middle.
Fig. 63
14. Fit the plastic housing onto thedisplay base plate and pressdown until it snaps into place. (Fig. 63)
Fig. 64
15. Insert the scale support (withaffixed scale) into the guides inthe plastic housing ( Fig. 64).Observe direction of flow (lowestscale value toward inlet side ofthe device).
16. Loosen, then remove the femalesocket and connect a continuitymeter or other suitable testinstrument to the pins of theswitch contact. Note the pinassignment. For Normally OpenContact, assign PIN 1 and PIN2, for Change-Over Contact,assign PIN 1 and PIN 3.
17. Loosen the set screws on theswitch contact so that it canmove freely.
18. Slowly push the switch contactin the opposite direction of flowuntil the contact closes. Nowslowly push the switch contact inthe direction of flow until thecontact opens. Proceed as accu-rately as possible, as this affectsthe measurement accuracy ofthe device.
19. Secure the switch contact withthe set screws, observing theproper torque ( Ä Chapter 11.1“Tightening torque” on page 80)while ensuring that the switchcontact position does notchange. The arrow on the switchcontact label should now bealigned with the first scale grad-uation mark on the positioningaid label (adhesive label on theguide rail) or, respectively, thefirst scale graduation mark onthe scale on the device body. Ifthis is not the case, the switchcontact label with arrow or the
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positioning aid label and thelabel on the device body mustbe removed and repositioned.Parallax errors are to beavoided.
20. Loosen the switch contact setscrews and adjust the switchcontact to a graduation mark inthe middle of the scale on thedevice body. Now tighten the setscrews, observing the propertorque ( Ä Chapter 11.1 “Tight-ening torque” on page 80).
21. Hold the device vertically andwith the test rod, move the floatin the flow direction until theswitch contact switches (con-tinuity meter). Now slowly returnthe float to its original positionand, with the aid of the continuitymeter, determine at which scalevalue the switch contactswitches off.
22. Adjust the display base platewith attached plastic housingand scale so that the cut-offvalue on the display scale corre-sponds to the value on the scaleon the device body. Align thedisplay base plate perpendicularto the device body.
23. If the value on the display scalematches the value on the scaleon the device body, secure themounting screws of the displaybase plate, observing the propertorque ( Ä Chapter 11.1 “Tight-ening torque” on page 80).
Fig. 65
24. Fit the display cover plate ontothe plastic housing and carefullypress down ( Fig. 65) until itsnaps into place.
Fig. 66
25. Screw in and tighten the fixingscrew of the display housingcover ( Fig. 66), observing theproper torque ( Ä Chapter 11.1“Tightening torque” on page 80).
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8.5.4 Switch contactreplacement
Tools:n Flat-bladed screwdrivern Hex screwdriver
Fig. 67: Loosen female socket
1. Loosen the fixing screw of thefemale socket ( Fig. 67) with aflat-bladed screwdriver.
Fig. 68: Remove female socket
2. Remove the female socket andgasket ( Fig. 68) by pullingupwards.
Fig. 69: Loosen set screw
3. Using a Hex screwdriver, (Fig. 69) loosen the set screw sothat the switch contact can beremoved.
Fig. 70: Remove switch housing
4. Remove the switch contact fromthe device body Fig. 70).
5. Attach the new switch contact,making sure that the cylinder pinslides into the guide
6. Insert the set screw and lightlytighten to still allow the switchcontact to move easily.
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7. Connect a continuity meter. ForNormally Open Contact (NOC),connect PIN 1 and PIN 2. ForChange-Over Contact (COC),connect PIN 1 and PIN 3.
8. Slide the switch contact in theopposite direction of flow up tothe stop. The switch contactmust now be closed.
9. Slowly slide the switch contact inthe direction of flow until thecontact opens. This switch pointshould be set as accurately aspossible because it affects theaccuracy of the switchpointadjustment scale values (If nec-essary, repeat steps 9 and 10).
10. Tighten the set screw (Fig. 69/1) observing the propertorque ( Ä Chapter 11.1 “Tight-ening torque” on page 80)
11. Bond the enclosed rating platewith the setting arrow onto theswitch contact so that the settingarrow is in alignment with thelowest scale mark. If a referencemark is present on the scale,(recognizable due to a thinnerline width), then this is to beused as the reference mark. Thebonding surface must be dry andfree of grease.
12. Set the desired flow rate (cut-offpoint) using the scale on thedevice body.
13. Position the female socket andgasket, then tighten the fixingscrew.
8.6 Measures to betaken after mainte-nance work
Take the following steps after comple-tion of maintenance work and beforeswitching on the device:
1. Check all previously loosened/released screw connections fortightness.
Ä Chapter 11.1 “Tighteningtorque” on page 80
2. Clean the work area and removeall residual materials, packaging,substances or spills.
MaintenanceMeasures to be taken after maintenance work
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9 Disassembly and disposalAfter its period of useful life, the devicemust be disassembled and disposed ofin an environmentally safe manner.
9.1 Safety
WARNING!
Risk of injury if disassembledincorrectly!Media residue, sharp edged com-ponents, pointed ends and cornerson and in the device or on toolsmay cause injury.
– Ensure that the site is suffi-ciently cleared before com-mencing work
– Always wear protective equip-ment when handling haz-ardous media residue
– Handle open, or sharp-edgedcomponents carefully
– Ensure that the workplace isorderly and clean! Compo-nents and tools that are lyingabout or on top of each otherare potential causes for acci-dents
– Disassemble components pro-fessionally
– Secure components so thatthey do not fall or overturn
– If in doubt, contact the manu-facturer
9.2 Disassembly
Before starting disassembly:
n Remove operating materials andpackaging and dispose of properly.
Personnel:n Qualified personnel
Protective equipment:n Protective glovesn Goggles
1. Remove the device from thepipeline ( Ä Chapter 8.3“Removal from the pipe system”on page 53)
2. Disassemble the device (Ä Chapter 9.2 “Disassembly”on page 72)
3. Clean components properly andremove residue
4. Dispose properly
Disassembly and disposalDisassembly
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9.3 Return Materials9.3.1 Return Materials
AuthorizationFor products being returned, regard-less of the reason, the currently validprovisions of the returns policy set byMEISTER will apply. Return shipmentswhich do not comply with the returnspolicy may be refused by MEISTER atthe expense of the consignor.
9.4 DisposalIf no return or disposal agreement hasbeen made, recycle disassembledcomponents:
n Scrap metalsn Recycle plastic elementsn Dispose of the remaining compo-
nents according to their materialproperties
NOTICE!
Danger to the environment dueto incorrect disposal!Potential risk to the environmentmay arise due to incorrect dis-posal.
– Have electrical scrap, elec-tronic components, lubricantsand other supplies disposed ofby approved specialists
– In case of doubt, obtain infor-mation on environmentallysafe disposal from the localauthority or special disposalexpert
Disassembly and disposalDisposal
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10 Technical data10.1 Device data plateThe data plate is on the mechanicalpart of the flow monitor/flow meter andcontains the following information:
Fig. 71: Device data plate
10.2 Switch contactdata plate
Fig. 72: Switch contact data plate
Fig. 73: Switch contact data plate withpositioning arrow
The data plate is on the switch contactand may provide the following informa-tion:
n maximum voltagen maximum currentn maximum powern positioning arrow for cut-off point
Technical dataSwitch contact data plate
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10.4 General specificationsType Overall dimensions (mm)
G * DN SW L1 L2 T
DKM/A-2/2 1/4 8 24 90 98 15
1/2 15 - 90 - 15
3/8 10 24 90 119 12,5
DKM/A-2/3 1/2 15 - 90 - 15
DKM/A-2/7 1/2 15 - 90 - 15
Type Overall dimensions (mm)
G * D1 D2 A1 A2 A3 A4 weight(g) **
DKM/A-2/2 1/4 27,5 30 47 33 66 ca. 70 620
1/2 - 30 47 33 66 ca. 70 570
3/8 27,5 30 47 33 66 ca. 70 670
DKM/A-2/3 1/2 - 30 47 33 66 ca. 70 570
DKM/A-2/7 1/2 - 30 47 33 66 ca. 70 570
* NPT thread on request
** Connecting cable weight, 2m approx. 80g
Technical dataGeneral specifications
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10.5 Electrical specificationsChange-Over Contact (COC)
Data Value Unit
Voltage 250 V
Current, maximum 1,5 A
Power, Maximum 50 VA
Minimum load 3 VA
Normally Open Contact (NOC)
Data Value Unit
Voltage 230 V
Current, maximum 3 A
Power, maximum 60 VA
Change-Over Contact (COC) M12x1 (-20 °C–85 °C)
Data Value Unit
Voltage 125 V
Current, maximum 1,5 A
Power, maximum 50 VA
Minimum load 3 VA
Technical dataElectrical specifications
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Normally Open Contact (NOC) M12x1 (-20 °C–85 °C)
Data Value Unit
Voltage 125 V
Current, maximum 3 A
Power, maximum 60 VA
Change-Over Contact (COC) PLC
Data Value Unit
Voltage 250 V
Current, maximum 1 A
Power, maximum 60 VA
10.6 Measuring ranges10.6.1 Standard measuring rangesType Switch range for oil, density 0,9 kg/dm3*
l/min gph gpm
DKM/A-2/2 0,5 – 1,6 8–25,5
DKM/A-2/3 0,8–3 13–48
DKM/A-2/7 2–7 32–111
* The specified data are switch-off points (other switch ranges are available onrequest).
10.7 Operating dataDescription Value Unit
Max. operating pressure 300 (brass) / 350 (stain-less steel)
bar
Technical dataOperating data
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Pressure loss 0,02 – 0,2 bar
Viscosity range 30 - 600 cSt
Max. media temperature 120 (optional: 160) °C
Measuring accuracy ± 10 % of full scale value
Min. media temp. It mustbe ensured that themedium does not freeze.
-20 °C
The devices in the DKM/A-2 series arenot suitable for use in explosion hazardzones.
We recommend devices in the DKM/A-2 15x50 series for employment inexplosion hazard zones. These arespecified in the Operating Instructionsfor DKM/A-2 15x50 Module ATEX.
Technical dataOperating data
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11 Annex11.1 Tightening torqueComponent/function
Descriptiong Size Torque Qty
Threaded ring Threaded ring(outlet)
G1/2" 5 Nm 1
Connection fit-ting
Process con-nection (inlet/outlet)
G1/2" 40 Nm 2
Display baseplate (slotend)
countersunkscrew w/slot
M2x4 0,4 Nm 1
Display baseplate
slotted cyl-inder-headscrew
M2x3 0,4 Nm 2
Display coverplate
countersunkscrew
M2x4 0,4 Nm 2
Switch contact Cylinder headscrew, hex
M3x10 0,4 Nm 1
11.2 Replacementparts
AnnexReplacement parts
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The following replacement parts drawing provides an example of the constructionof a DKM/A-2 type flow monitor. The actual configuration may vary depending onthe model.
Item
Qty Description
1 1 Process connection (inlet)
2 2 O-ring (seal)
3 1 Device body
4 1 Float
5 3 Magnets
6 1 Spring
7 1 Threaded ring (outlet)
8 1 Process connection (outlet)
AnnexReplacement parts
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Item
Qty Description
9 1 Cylinder pin (switch contact)
10 1 Switch contact with male connector
11 1 Female socket and gasket
12 1 Fixing screw (female socket)
13 1 Display, mechanical
14 1 Set screw (switch contact)
11.3 ToolsThe following tools are required:
Tools
n Fixed spanner 24, 30 mmn Flat-bladed screwdriver, width of
blade 5,5 mmn Flat-bladed screwdriver, width of
blade 3,5 mmn hex screwdriver, 2,5 mmn Torque screwdriver and assorted
bladesn Socket wrench 1/2 " and socketsn Torque wrench 1/2 "
Special tools
n Threaded ring insertion tool DKM/A-2
n Test rod DKM/A-2n O-ring installation tool DKM/A-2n Magnetic pole indicator
11.4 Sealant
Before using a sealant, ensure thatit is compatible with the mediaused and that it can be employedunder the given operating condi-tions.
n Ensure proper sealn Use a suitable sealant. Liquid seal-
ants will damage the flow monitorn Always follow the sealant manu-
facturer's instructions
AnnexSealant
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11.5 Lubricants
Before using a lubricant, always make sure that it is compatible with the oper-ating medium.
For the proper mounting of O-rings, device-specific O-ring installation tools may bepurchased from the manufacturer.
The following lubricants are suitable to facilitate installing the O-rings:
Lubricant O-ring material
NBR EPDM FKM
Glycerine* suitable suitable suitable
Soapy water suitable suitable suitable
* Glycerine must not be used if the device is used for sulfuric acid and/or nitricacid.
AnnexLubricants
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12 IndexAAssembly . . . . . . . . . . . . . . . . . . 62
CCable . . . . . . . . . . . . . . . . . . . . . 39Component groups . . . . . . . . . . . 21Connector
M12x1 . . . . . . . . . . . . . . . . . . 38Contact . . . . . . . . . . . . . . . . . . . . 7Contact protection measures . . . . . 42Copyright . . . . . . . . . . . . . . . . . . . 3Correct use . . . . . . . . . . . . . . . . 10Customer service . . . . . . . . . . . . . 7
DDegree of protection
IP-Code . . . . . . . . . . . . . . . . . 40Device data plate . . . . . . . . . . . . . 74Device description . . . . . . . . . . . . 20Dimension sheet . . . . . . . . . . . . . 75Disassembly
Disposal . . . . . . . . . . . . . . . . 72maintenance . . . . . . . . . . . . . 54
Display value . . . . . . . . . . . . . . . 47Disposal . . . . . . . . . . . . . . . . . . . 73
EElectrical connection . . . . . . . . . . 37Environmental protection . . . . . . . 17
cleaning fluids . . . . . . . . . . . . 17lubricants . . . . . . . . . . . . . . . . 17
FFault table . . . . . . . . . . . . . . . . . . 50flow value . . . . . . . . . . . . . . . . . . 47
GGeneral
safety . . . . . . . . . . . . . . . . . . . 8
HHazard
electrical current . . . . . . . . . . . 11Hazards
mechanical . . . . . . . . . . . . . . 12media . . . . . . . . . . . . . . . . . . 14radiation . . . . . . . . . . . . . . . . 13temperature . . . . . . . . . . . . . . 13
IIndicator . . . . . . . . . . . . . . . . . . . 21Indicator scale . . . . . . . . . . . . . . . 22Initial startup . . . . . . . . . . . . . . . . 36Installation
pipe system . . . . . . . . . . . . . . 32preparation . . . . . . . . . . . . . . 28
Intended use . . . . . . . . . . . . . . . 10
LLimitation of liability . . . . . . . . . . . . 3Lubricant . . . . . . . . . . . . . . . . . . 83
MMaintenance . . . . . . . . . . . . . . . 60Maintenance plan . . . . . . . . . . . . 53Measuring range . . . . . . . . . . . . . 78
OOperating conditions . . . . . . . . . . 78Overview . . . . . . . . . . . . . . . . . . 20Owner . . . . . . . . . . . . . . . . . . . . 17
PPackaging . . . . . . . . . . . . . . . . . . 23Parts replacement . . . . . . . . . . . . 62Plug connection . . . . . . . . . . . . . . 40Plug connector
EN175301-803 . . . . . . . . . . . . 37
Index
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Precautionsgeneral . . . . . . . . . . . . . . . . . 11
Preparationdevice . . . . . . . . . . . . . . . . . . 31
RRead-off . . . . . . . . . . . . . . . . . . . 47Replacement parts . . . . . . . . . 16, 80Return Materials Authorization . . . . 73
SSafety
disassembly . . . . . . . . . . . . . . 72Safety equipment . . . . . . . . . . 15, 16Safety instructions
transport . . . . . . . . . . . . . . . . 23Sealant . . . . . . . . . . . . . . . . . . . . 82Service . . . . . . . . . . . . . . . . . . . . . 7Special tools . . . . . . . . . . . . . . . . 82Specifications
Change-Over Contact (COC) . . 77Normally Open Contact (NOC) . 77
Storage . . . . . . . . . . . . . . . . . . . 24Strainer . . . . . . . . . . . . . . . . . . . 31
Switch contact . . . . . . . . . . . . . . . 21replacement . . . . . . . . . . . . . . 70
Switch contact data plate . . . . . . . 74Switch point . . . . . . . . . . . . . . . . 45Switch point scale . . . . . . . . . . . . 21Symbols
packaging . . . . . . . . . . . . . . . 24Symbols used
in the instructions . . . . . . . . . . . 8
TTechnical data
General specifications . . . . . . . 76Tightening torque . . . . . . . . . . . . . 80Tightening torque of screws . . . . . 80Tools . . . . . . . . . . . . . . . . . . . . . 82Transport inspection . . . . . . . . . . . 23
UUnimpeded flow section . . . . . . . . 29
WWarranty and guarantee provisions . 7
Index
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