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AFTLD SeriesElectromagnetic Flow meter

Kaifeng AFT Instrument Co.,Ltd

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Measurement is independent of fluid density, viscosity, Temperature ,pressure and conductivity.

There are no obstacle parts in the measuring tube ,no pressure loss to the tube of which the straightpart is of low requirement.

The converter of the LCD back light type shows and reading easily under the sun or in the darkroom.

In bad environment parameters can be set up through the infrared ray touch nubs without openingthe cover of the converter.

The flow meter with bidirectional measurement system, built-in three totalizer: positive total amount ,reverse total amount and total amount difference. It shows the positive and negative flow withmultiform outputs :current ,pulse, digital communication, HART.

The converter has alarm output function of self-diagnosis ,empty load test , high and low limit of theflow ,two-stage flow value, batch control of function etc.

Not only used in general process ,but also in the test of mineral serosity ,paper pulp as well aspastry liquid .

High pressure type electromagnetic flow sensor adopting PFA lining technology which is resistant tohigh pressure and negative pressure is specially applicable in industries of oil ,chemistry etc.

Product Description:

AFTLD Intelligent electromagnetic flow meter is a kind of high performance ,high reliability of the

flow meter .Used for measuring the volume flow of conducting liquid and slurry in closed conducts.

Widely used in steel, electricity, petroleum, chemical, coal, metallurgy,

paper making, water supply and drainage ,food ,medicine industry etc.

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Working Principle:

The measuring principle of electromagnetic flow meter is based onthe electromagnetic induction law of Farady. The sensor is mainlycomposed of measuring tube with isolate lining, a pair of electrodesinstalled by penetration of the measuring tube wall, a pair of coils andiron core to produce working magnetic field. When the conductive fluidflows through the measuring tube of the sensor, the voltage signal indirect proportion to the average flow velocity of the fluid will be inductedon the electrodes. The signal is amplified and treated by the transmitterto realize various display functions.

Electromagnetic flow meter converter selection

Integrated converter Split converter Slurry converter

Battery-powered converter GPRS wireless converter Cold (heat) converter

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Electromagnetic flow meter sensor selection

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Electromagnetic flow meter converter size drawing

Exterior size of the integrated circinal shells

Exterior size of the split squared shells

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Sensor size:

Unit: mm

Nominaldiameter

PresetPressure L W H d1 d0-n Nominal

diameterPreset

Pressure L W H d1 d0-n

DN3 4.0 192 90 140 60 ⌀14*4 DN250 1.6 450 405 455 355 ⌀26*12

DN6 4.0 192 95 145 65 ⌀14*4 DN300 1.6 500 460 510 410 ⌀26*12

DN10 4.0 192 90 140 60 ⌀14*4 DN350 1.0 500 500 550 460 ⌀23*16

DN15 4.0 192 95 145 65 ⌀14*4 DN400 1.0 500 565 615 515 ⌀36*16

DN20 4.0 192 105 155 75 ⌀14*4 DN450 1.0 550 615 665 565 ⌀26*20

DN25 4.0 192 115 165 85 ⌀14*4 DN500 1.0 550 670 720 620 ⌀26*20

DN32 4.0 192 135 185 100 ⌀18*4 DN600 1.0 600 780 830 725 ⌀30*20

DN40 4.0 192 145 195 110 ⌀18*4 DN700 0.6 700 860 910 810 ⌀26*24

DN50 4.0 192 160 210 125 ⌀18*4 DN800 0.6 800 975 1025 920 ⌀30*24

DN65 1.6 250 180 230 145 ⌀18*4 DN900 0.6 900 1075 1125 1020 ⌀30*24

DN80 1.6 250 195 245 160 ⌀18*8 DN1000 0.6 1000 1175 1225 1120 ⌀30*28

DN100 1.6 250 215 265 180 ⌀18*8 DN1200 0.6 1200 1400 1450 1340 ⌀30*32

DN125 1.6 250 245 295 210 DN1400 0.6 1400 1620 1670 1560 ⌀30*36

DN150 1.6 300 280 330 240

DN200 1.6 350 335 385 295

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Technical Parameters:

Main power AC220V 50HZ / DC24V

Power consumption <15W (And set with sensor supporting power consumption )

Display and push

buttonsThe big screen LCD display with back lighting can display the instantaneous flow ,total flow and

percentage of flow as well as alarm display ,four thin-film touch nubs ,which is used to data set .

AccumulatorForward total quantity ,reverse total quantity

Output signal

Analog

output

Bi-direction with two ways ,Isolation 0-10mA/4-20mA

Load resistor:0-10Ma;0-1.5KΩ;4-20Ma;0-750Ω

Frequency

output

Forward & reverse flow output with frequency range set between

1-5000Hz.The external voltage must be lower than 35V and the max output

and the max output current is 50Ma when the transistor is turned on

Alarm output

Two outputs from the collectors of photoelectric isolate transistors are for alarm

signals .The external voltage must be lower than 35V and the max output

current is 250Ma when the transistor is turned on. Alarm status: Activates when

the measured pipes are empty ,the excitation circuits are broken or the volume

of flow rate exceeds the value designed limits.

Pulse output For pulse output in forward and reverse flow measurement ,upper frequency of

pulse output can be up to 5000 CP/S relevant value of pulse is from 0.0001 to

1.0 M3/P .The width of pulse can be set to 20ms or squired wave from

automatically. The collector of transistor with photoelectric is open circuited.

The external voltage must be lower than 35 V and maximum output current is

250Ma when the transistor is turned on .

Accuracy±0.5% of the value displayed ,±0.3% or ±0.2% are selectable.

Damping time

constant Continuous variable from 0-100 s (90%)can be selected by group

CommunicationRS232 ,RS485 or HART Communication are selectable ,with lighting resistance

Power failure An anti-failure clock is designed in the flow meter which can save the power failure records for

16 times (10 years)

Protection class IP65

Ex-proof Mark Exd IIBT4

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Selection principles

The measured liquid must be conducing liquid of which the conductivity should be more than 5 μ

s/cm .If the conductivity less than 5 μs/cm , the flow meter should use the dual core and dual shield wirewith equal potential .The medium shouldn’t containt much magnetic matter or air bladder .Pressure grade,lining material ,electrode material and structure type should be selected according to the medium’stemperature ,corrosiveness,abration, etc.

Normally the caliber of flow meter should be same as the pipe diameter. For AFTLD electromagneticflow meter has 1500:1 high scope.

Recommended flow rate is 1～3m/s if the medium contains liquid grains. Select higher caliber to makedown the flow rate and reduce the abration to the lining and electrode if the actual flow rate is too big andnot easy to install.

Recommended flow reta is 2～5m/s if there is deposit in the pipe. Select low caliber to exceed the flowrate and reduce the affluence to the accuracy from the deposit if the actual flow rate is too small and noteasy to change the pipe .

Smaller caliber sensor is recommended to promote the flow rate and ensure the accuracy if the flowrate is too small and high accuracy required .Variation caliber pipe should be installed up strteam anddownstream for the above situation 2.3.4.The cone angle of variation caliber pipe shall not be more than15°,the upriver length of straight pipe should be above 5D of variation caliber pipe.

Main performances of the electrode materials：

Electrode material Application

Stainless steelSUS316

Applicable in water ,sewage and corrosive medium.Widely used in industies ofpetrol,chemisty,carbamide ,etc

Stainless steelcovered with tungstencarbide

Applicable in medium of no corrosive and low abration

Hastelloy B (HB) Having strong resistance to hydrochloric acid of any consistence which is below boilingpoint.Also resistable against vitrol ,phosphate,hydrofluoricacid,organic acid ,alkali and non–oxidable salt.

Hastelloy C (HC) Be resistant to oxidable acid such as nitric acid,mixted acid as well as oxidable salt such asFe+++,,Cu++ and sea water

Titanium Applicable in seawater and kinds of chloride salt ,oxidable acid (including fumingnitricacid ),organic acid ,alkali etc. Not resistant to a pure reducing acid(such as sulphuricacid hydrochloric acid) corrosion .But if acid contains antioxidant(such as Fe+++,Cu++) isgreatly reduce corrosion.

Tantalum Having strong resistance to corrosive mediums that is similar with glass .Almost applicablein all chemical mediums except for hydrofluoric acid ,oleum and alkali.

Platinum-iridium Almost be applicable in all chemical mediums except for aqua fotis ,ammonium salt.

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Main performances of the liner materials：

Linermaterial

Photo Main performances Applications

PTFE

1.The most steadiest material in plastics whichis resistance to boiling hydrochloric acid ,vitrioland aqua regia as well as strong and organicimpregnates.2.Not be perfect in abrasion resistance

Strong corrosive mediumssuch as strong acid andalkali

PFAHaving the same abration resistance withPTFE .Having strong ability of load pressureresistance.

Applicable in state of loadpressure

F46

1. Having the same abration resistance withPTFE.2.Resistance for low abration.3.Having strongresistance to load pressure

1.The same as PTFE2.Applicable in medium oflow abrasion

Neoprene

Be of good elasticity ,retractility and abrationresistance 2.Be resistance to low acid ,alkaliand salt but not for oxidation medium Water,sewage and

slurry ,mineral serosity oflow abration.

Polyurethane

1.Be good of abration resistibility (equal to 10times of caoutchouc)2.Not be perfect in acid/alkali resistance3.Can;t be used for water mixted with organicimpregnants

Applicable in mineralserosity ,slurry and coalslurry of high abration.

Flow Range Chart：

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Rate-Flow comparision

0.5 1 2 3 4 5 15(Max)

10 0.1414 0.2827 0.2654 0.8482 1.1309 1.4137 4.2411

15 0.3181 0.6362 1.2723 1.9085 2.5447 3.1809 9.5426

20 0.5655 1.1310 2.2619 3.3929 4.5239 5.6549 16.9646

25 0.8836 1.7671 3.5343 5.3014 7.0686 8.8357 26.5072

32 1.4476 2.8953 5.7906 8.6859 11.5812 14.4765 43.4294

40 2.2619 4.5239 9.0478 13.5717 18.0956 22.6195 67.8584

50 3.5343 7.0686 14.1372 21.2058 28.2743 35.3429 106.0288

65 5.9730 11.9459 23.8918 35.8377 47.7836 59.7295 179.1886

80 9.0478 18.0956 36.1911 54.2867 72.3823 90.4779 271.4336

100 14.1372 28.2743 56.5487 84.8230 113.0973 141.3717 424.1150

125 22.0893 44.1786 88.3573 132.5359 176.7146 220.8932 662.6797

150 31.0886 63.6173 127.2345 190.8518 254.4690 318.0863 954.2588

200 56.5487 113.0973 226.1947 339.2920 452.3893 565.4867 1696.4600

250 88.3573 176.7146 363.4292 530.1438 706.8583 883.5729 2650.7188

300 127.2345 254.4690 508.9380 763.4070 1017.8760 1272.3450 3817.0351

350 173.1803 346.3606 692.7212 1039.0818 1385.4424 1731.8030 5195.4089

400 226.1947 452.3893 904.7787 1357.1680 1809.5574 2261.9647 6785.8401

450 286.2776 572.5553 1145.1105 1717.6658 2290.2210 2862.7763 8588.3289

500 353.4292 706.8583 1413.7167 2120.5750 2827.4334 3534.2917 10602.8752

600 508.9380 1017.8760 2035.7520 3053.6281 4071.5041 5089.3801 15268.1403

700 692.7212 1385.4424 2770.8847 4156.3271 5541.7694 6927.2118 20781.6354

800 904.7787 1809.5574 3619.1147 5428.6721 7238.2295 9047.7868 27143.3605

900 1145.1105 2290.2210 4580.4421 6870.6631 9160.8842 11451.1052 34353.3157

1000 1413.7167 2827.4334 5654.8668 8482.3002 11309.7336 14137.1339 42411.5008

1200 2035.7520 4071.5041 8143.0082 12214.5122 16286.0163 20357.5204 61072.5612

1400 2770.8847 5541.7694 11083.5389 16625.3083 22167.0778 27708.8472 83126.5416

1600 3617.1147 7238.2295 14476.4589 21714.6884 28952.9179 36191.1474 108573.4421

1800 4580.4420 9160.8842 18321.7684 27482.6525 36643.5367 45804.4209 137413.2627

2000 5654.8667 11309.7336 22619.4671 33929.2007 45238.9342 56548.6678 169646.0033

2200 6842.3887 13684.7776 27369.5552 41054.3328 54739.1104 68423.8880 205217.6640

2400 8143.0080 16286.0163 32572.0326 48858.0490 65144.0653 81430.0816 244290.2448

2600 9556.7247 19113.4268 38226.8536 57340.7072 76453.7072 95567.1340 206701.4020

2800 11083.5387 22167.9001 44334.1548 66501.2322 88668.3095 110835.3869 332506.1608

3000 12723.4500 25446.9001 50893.8001 76340.7002 101787.6002 127234.5003 381703.5009

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CONVERTER OPERATION MENU AND PARAMETER SETTING

Keypad and Display

Fig.5(a) Remote-type key and displaySteps to enter the menu1.First keys and fourth keys at the same time, the display parameters set up the panel2 .press the 4 key to display the 00000 input password 19818The way to enter a password is:Hold down 1 and 2 keys to shift or hold down 1 and 3 key shift. 2 and 3 keys to change the

number.3.1 keys and 4 keys at the same time by the display language4 .find the content you need to set.5. after processing, press the 3 key 4 seconds to quit

6.2 Keypad Function1. Automatic Measurement ModeDOWN: Scroll bottom line display;UP: Scroll top line display;ALT + ENTER: Enter into setting mode;ENTER: Return to measurement mode.2. Parameter Setting ModeDOWN: Subtract one form the digit at the cursor;UP: Add one on the digit at the cursorALT + DOWN: Cursor shifts left

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ALT + UP: Cursor shifts rightENTER: Enter/exit submenu;ENTER: Return to measurement mode if held for 2 seconds at

any locationRemarks:

(1) When using ALT key, hold ALT first and then press UP or DOWN.(2) Under setting mode, the meter returns to measurement mode automatically if no

key is pressed for 3 minutes.(3) When adjusting flow zero, UP or DOWN key can be used to change the sign (+/-).(4) When setting flow range, UP or DOWN key can be used to change flow unit.

Converter Terminals and Definition

Remote Type: Terminals and Marks

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Labels of connectors in squared model

The definition of terminals and their marks for remote type converter is given as below:

DS1 Shield drive 1SIG1 Signal input 1SIG GND Signal GroundSIG2 Signal input 2DS2 Shield drive 2EXT+ Coil excitation +EXT- Coil excitation -IOUT Current output +ICOM Current output -PUL+ Frequency/pulse output +PCOM Frequency/pulse output -PDIR Flow direction indicator +ALM- Low alarm output +ALM+ High alarm output +ALCOM Alarm output -A RS485 communication AB RS485 communication BIN+ Input contact +IN- Input contact -L1(+) 220V(24V +) inputL2(-) 220V(24V -) input

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The dip switch SW1 is set to ON to supply +12V power to pulse output. If external power is used,turn the switch to OFF.

Compact Type: Terminals and MarksThe definition of terminals and their marks for compact type converter is given as below:

T - RS485-B

T+ RS485-A

COM Alarm/flow direction/ pulse output -

FDIR Flow direction indicator +

AL Low alarm output +

AH High alarm output +

IN- Input contact -

IN+ Input contact +

P+ Frequency/pulse output +

COM Current/pulse output -

I+ Current output +

L1(+) 220V(24V +) input

L2(-) 220V(24V -) input

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Attentions for the Sensor Installation:

Place and position to install the sensor may be selected according to needs.May install ithorizontally,obliquely or vertically.However,the axis of the two electrodes shall be generally inthe horizontal position.No matter which way is selected for installation,the pipeline shall besurely filled with medium under measurement.There shall never be any non-full pipe sectionor any air bubbles to congregate in the pipeline

Flow direction: The arrow on the sensor indicates the forward flow direction . Because the distance between the sensor flange and outside case is limited,the connecting

bolt shall be inserted from the lateral side of the pipe.This requires an enough space at theflange of the sensor connecting pipe.

If the pipeline system is subject to strong vibration,it is necessary to add supports to thepipeline on the two sides of the sensor.

If the medium under measurement is a grave foul liquid,or a luquid,easily fouling in thepipeline,it's better to install the sensor on a by-pass pipe for easier cleaning.(as the figureshows)

Never allow any ferrous magnetic objects to be set closely to the sensor.The sensor shall bekept far away from any strong electromagnetic fields which may affect the sensor's magneticfields and signal voltage.

For the needs to check the zero point,the sensor shall be full of medium and set the flowspeed at zero.This can be

effected by closing the stop valves mounted both on the upper and lower reaches of thesensor.These valves shallnot be mounted in the area smaller than 5xDN in the upper reaches and 2 x DN in the lowerreaches. To avoid whirlpool to form after the valves have been mounted,it is necessary to check

carefully to guarantee acocentric installation of both the sealings and the earthing ring. To avoid interference,the signal cable and the power-supply cable or exciting current cable

shall not be laid in asame steel tube.When arrange them in a parallel way they shall not be too close to each other,butkeeping a certaindistance between each other. The length of the straight pipe in the upper reaches of the sensor shall not be less than

5DN,that in the lowerreaches shall not less than 2DN. DN is the path diameter of the sensor. In case this requirement

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can be met on the spot, a flow orthosis device shall be mounted in the upper reaches to eliminatethe whirlpools to form in the medium flow and improve the flow field distribution,raise themeasurement accuracy and stability.In case the sensor and theconnection tube are different in the caliber,it is necessary to add a specially shaped tube with twodifferently sized ends. In order to ensure the measurement accuracy shall carry out the installationas per the figure.(See the figure).

Suggestions for correct installation of the electromagnetic flow meter :To avoid measurement errors caused by air congregation in the pipeline and damage of the

lining inside the sensor caused by the negative pressure such formed, please,pay attention to thefollowing points:

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D. Electrode material1 316L

2 Harris alloy B

3 Harris alloy C

4 Ti

5 Platinum rhodium alloy

6 Ta

7 Stainless steel coated tungsten carbide

J.Converter form

MA Pulse ,4-20mA,RS485

MB Pulse,4-20mA,Hart

MC Pulse,4-20mA,RS485,Profibus DP

ME GPRS

M0 No display, only output pulse or 4- 20mA

Note: AFTLD/C Insert type

AFTLD/R cold heat meter

A. Nominal DiameterCode Diameter Code Code Diameter

030 3 125 901 900

060 6 151 102 1000

100 10 201 122 1200

150 15 251 142 1400

200 20 301 162 1600

250 25 351 182 1800

320 32 401 202 2000

400 40 451 222 2200500 50 501 242 2400

650 65 601 262 2600

800 80 701 282 2800

101 100 801 302 3000

E.Shell protection grade1 IP65

2 IP68+IP65(sensorIP68+converterIP65）

F.Explosion proof mark0 Not Explosion-proof

1 Exd IICT4(Acetylene free）

G.Attachment0 No attachment

1 Ground electrode

2 Ground ring

3 Match flange

4 Scraper electrode

H.structure typeER Separate type

EH Integrated type

*Separate type with 10 meters cable

B.Nominal pressure（MPa)06 0.6 (DN700-DN3000)

10 1.0 (DN200-DN1000)

16 1.6 (DN15-DN600)

40 4.0 (DN3-DN150)

And so on

I.Power supply1 85-256V 45-400Hz

2 11-40V DC

3 3.6V. Battery power supply

C. lining material1 Polytetrafluoroethylene (PTFE)

2 Polychloroprene rubber

3 Polyurethane rubber4 Polyperfluoroethylene propylene（F46）

5 Netting PFA

6 Silicone fluorine rubber

AFTLD Series Electromagnetic Flow meter Model Code

AFTLD

A B C D E F G H I J

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Kaifeng AFT Instrument Co.,LtdNo.06, Shanghe Road, Xiangfu District,Kaifeng City, Henan, China

Tel:+86-0371-23215688Email:amy@aft-flowmeter.com

www.aft-flowmeter.com

QUALITY IS AFT'S CULTURE