automated ph measurement medimmune, frederick md roger govaert march 2011
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Automated pH Measurement
MedImmune, Frederick MDRoger Govaert
March 2011
Internal usage only
Agenda
System Overview
Main Components
M700 Transmitter
Programming Basics
Communications
Maintenance
© by METTLER TOLEDO
EasyClean 400(X): Overview
Functionality
Fully automated electrode maintenance system.
Automatically rinses cleans and calibrates an electrode mounted in an InTrac 7XXe housing.
Type EC 400X for hazardous areas. System integration via Profibus PA or Foundation Fieldbus possible.
TransmitterM 700 with EC 700 Module
InTrac7XXe housing All pH sensors
System requirements:
Sensors suitable for InTrac7XXe
Internal usage only
System Components
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EasyClean Automation
Cleaning & Calibration at the Heart of the System
Internal usage only
Agenda
System Overview
Main Components
M700 Transmitter
Programming Basics
Communications
Maintenance
© by METTLER TOLEDO
EasyClean 400 Base
Filter, water trap
Water pressuregauge
Purge air
Water valve
Air valve
Piezo valve
Air pressure-regulator
Air pressure-gauge
PLC
Terminals
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Media Adapter
Buffer and cleaning agent container (3.5 l / 0.92 gal)
Self-sustaining assembly with integrated pump
Media adaptor for connecting the container island with the EasyClean 400
The media adaptor offers up to three ports
Classic media island for two buffer and one cleaning agent container
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NO moving mechanical parts
NO wear out
All wetted parts are chemical resistant
NO stored energy according to
ATEX 94/9/EG
Floating body for level indication
Suction pipe
Expansion pump
Connection to the media adapter
Media Pump
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Media Pump
How the Expansion Pump works
Air/Liquid is drawn out of a main cylinder. This causes a
flexible membrane tube in
the center to expand. During this expansion,
the media is drawn from the bottom of the
membrane tube. Check valves
maintain proper direction of flow.
Air/Liquid is forced into main
cylinder. This causes a flexible membrane tube in the center to
constrict. During this constriction,
the media is pushed out of the
top of the membrane tube.
Check valves maintain proper direction of flow.
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Sample Cleaning Agents
Cleaning Agent Chemical Concentration Sample Application
Diluted acids: e.g. against limy depositis
Hydrochloric acid HCl Max. 5 %
Sulfamic acid H3NO3S Food industry
Acetic acid CH3COOH
Nitric acid HNO3 Max. 5 %
Diluted alkaline solutions: Proteins, starch, fats, ZIP
Sodium hydroxide NaOH Max. 5 %
Organic solvents: e.g. against limy depositis
Ethyl alcohol C2H5OH Food industry
Isopropyl alcohol C3H8OH
Other cleaning agents:
Pepsine solution Starch
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Media Connection
Buffer Island End
• Unique shape for error free connection
Buffer Island End
• Unique shape for error free connection
Tubing Connection End
• Unique size and colors for easy connection
Tubing Connection End
• Unique size and colors for easy connection
InTrac Interface End
• Unique shape for error free connection
InTrac Interface End
• Unique shape for error free connection
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Housing Adapter
Tip: Orient this module opposite the pneumatic connections as shown in insert
Housing adapter distributes buffer, cleaning agent, control air and air for indicators
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Housing Adapter
Standard connections should look like this.
1. Media connection to rinsing chamber
2. Rinsing chamber outlet
3. Feedback of “SERVICE” position
4. Feedback of “MEASURE” position
5. Control air for “SERVICE” position and supply for “SERVICE” position feedback unit
6. Control air for “MEASURE” position and supply for “MEASURE” position feedback unit
7. Holding bracket for strain relief of media connection
Internal usage only
Agenda
System Overview
Main Components
M700 Transmitter
Programming Basics
Communications
Maintenance
M 700
M 700 – pH 2700(i), O2 4700(i), Cond 7700, CondInd 7700
Open flexible system
Reduce cost per loop through multi channel system
Optional Software allows application specific solutions
Common features VariPoWer (VPW) supply: 20 to 250 V Plain-text user interface with intuitive menu guidance Four configurable relay contacts (extendable to 8) Logbook function Sensor network diagram 2 channel recorder
M 700 – Modular Concept
Components of the EC 400(x)
The M 700 EasyClean 400 Module
Integrates in to the M 700. Communication with the EasyClean 400 via RS 485 interface
Has an integrated pH measurement Module
Provides the power supply for EasyClean 400
Module design allows for easy interfacewith M 700, ISM, PA and FF technologies
Clear – Measure (Terminal 2)Red – Ref. Elec. (Terminal 8)Green – RTD (Terminal 14)White – RTD (Terminal 13) Green &Yellow – Shield (Terminal 15)Blue – Sol. Ground (Terminal 12)
PT100 - Remove Jumper Term. (18 & 19) connect Gray wire.
EC400 Module Wiring
Wire the EC400(x) Module with a VP cable according the diagram.
Not Used with ISM Systems
Intelligent Sensor Management pH Module
Clear Coax
Colored GroundTo ISM pH Sensor
ISM pH Module is connected to EasyClean 400 Module for automated pH functionality of ISM Sensors/Systems
Wire the BASE Module of the M 700 as follows:- Power Lead 1* – Terminal 18
- Power Lead 2* – Terminal 19
- Earth Ground – Terminal 17
- Output 1 (+) – Terminal 7
- Output 1 (-) – Terminal 8
- Output 2 (+) – Terminal 9 “if required”
- Output 2 (-) – Terminal 10 “if required”
* There is no polarity for power on the M 700
1 1 2 2
M700 Base Connections
Internal usage only
Agenda
System Overview
Main Components
M700 Transmitter
Programming Basics
Communications
Maintenance
Internal usage only
Main Menu Structure
ALL DEMO UNIT PASS CODES ARE SET TO 0000
Internal usage only
FRONT Module – Display Configuration
1. Press Menu key to select menu. Select parameter setting using arrow keys, confirm with Enter. Select: “Administrator level”: Passcode 1989
2. Select “M 700 FRONT”
3. Select “Measurement display”
4. Set the number of primary values (large display) to be displayed
5. Select process variable(s) to be displayed and confirm with Enter. Pressing the Meas key returns to measurement.
Notice the Module Icons for each variable!
Make sure you are displaying the variable that you really want.
Internal usage only
BASE Module – Output Settings
1. Call up parameter setting. Enter passcode.
2. Select M 700 BASE
3. Select “Output Current I1”
4. Select your measured variable
5. Select Curve, e.g. “Linear”: The measured variable is represented by a linear output current curve. The desired range of the measured variable is specified by the values for “Start” and “End”.
6. Enter your “Start” 4(0)mA value
7. Enter your “End” 20mA value
8. Press Meas to return to main display.
If you’re using a second output, follow the same steps but when
choosing the Output Current choose I2 instead of I1.
Internal usage only
Calibration Buffer Presets
Calimatic buffer
For automatic calibration, you must define the buffer set you want to use.
Select a buffer solutions from this buffer set in any order.
The selected buffer set with the nominal values of the individual buffer solutions is displayed in gray. The “Calimatic buffer” menu shows all buffer sets available.
Check module manual for buffer set details
Internal usage only
EC Parameter Settings
Select Module to control
Ensure you have selected correct module (2700i pH)
Fixed of Weekly Programming
Fixed time interval or daily/weekly custom programming
Program Selection
Select and Edit (as desired) programs you wish to run
© by METTLER TOLEDO
Available Automated Programs
Cleaning- Retract, Clean and Measure
2-Point Calibration- Retract, Clean, Cal Point 1, Cal Point 2 and
Measure
1-Point Calibration- Retract, Clean, Cal Point 1 and Measure
Service - Retract, Clean, Extended Hold and Measure
Parking- Retract, Clean, External Hold, and Measure
User Defined Program 1
User Defined Program 2
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2-Point Calibration Example
Internal usage only
Agenda
System Overview
Main Components
M700 Transmitter
Programming Basics
Communications
Maintenance
© by METTLER TOLEDO
System Integration
Integration via Fieldbus Network
Internal communication
4.. 20 mADI
Conventional integration: Digital Inputs/Outputs, Current Output
Internal communication
DO
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DCS Control Options
Internal usage only
Agenda
System Overview
Main Components
M700 Transmitter
Programming Basics
Communications
Maintenance
© by METTLER TOLEDO
Maintenance
Replacing seals in contact with the process medium- All seals that come in contact with the process medium should be replaced at least
every six months for reason of safety.
- With aggressive media the seals may need to be changed at correspondingly shorter intervals.
- Medium–wetted seals must be examined at least monthly, as well as during normal maintenance procedures to check for dirt or damage.
- Frequent insertion and retraction motion of the immersion tube can also have an influence on the necessary maintenance intervals
© by METTLER TOLEDO
Maintenance
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MC 700 Maintenance
Start probe maintenance- Here you can select a preset
program (Cleaning, Cal 2point, Cal1point, etc.) or one of the 2 user-specific programs. Select using arrow keys confirm with enter.
Probe maintenance- With the EC 400 “SERVICE”
program, the probe is moved into SERVICE position. The individual program steps are indicated in the display. After having terminated the servicing work, press the “End Service” softkey to move the probe back to “Measuring” position (PROCESS).
© by METTLER TOLEDO
Maintenance
Reset wear counter - The wear counter indicates the
number of probe movements.
Manual control- Select function using arrow keys.
Symbol flashes, activate with enter. “ON” appears below the icon. Terminate function with enter. (“ON” disappears again.)
* The access code is specified in the “Parameter setting / EC 400 / Installation” menu.
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Maintenance
It is recommended that a service visit be scheduled once a year. This check-up will ensure that the Easy Clean 400 is maintained properly. Site visits will include inspection and maintenance of O rings, seals, pumps, filters, hosing and armature. These visits will also provide an opportunity for additional training as required.
© by METTLER TOLEDO
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