Mettler Toledo M400 Operation Manual

Page 1

Operation Manual Multiparameter Transmitter M400

Transmitter Multiparameter M400 52 121 378
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Transmitter Multiparameter M400 2
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400 Printed in Switzerland 52 121 378
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Transmitter Multiparameter M400 3
Operation Manual Multiparameter Transmitter M400
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400 Printed in Switzerland 52 121 378
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Transmitter Multiparameter M400 4

Content

1 Introduction ___________________________________________________________________________________________ 7
Safety instructions ______________________________________________________________________________________ 7
2.1 Definition of equipment and documentation symbols and designations ________________________________________
2.2 Correct disposal of the unit _________________________________________________________________________
Unit overview __________________________________________________________________________________________ 9
3.1 Overview 1/2DIN __________________________________________________________________________________
3.2 Control / Navigation Keys ___________________________________________________________________________
3.2.1 Menu Structure ___________________________________________________________________________
3.2.2 Navigation keys __________________________________________________________________________
3.2.2.1 Navigating the menu tree _________________________________________________________
3.2.2.2 Escape _______________________________________________________________________
3.2.2.3 Enter _________________________________________________________________________
3.2.2.4 Menu _________________________________________________________________________
3.2.2.5 Calibration mode _______________________________________________________________
3.2.2.6 Info mode _____________________________________________________________________
3.2.3 Navigation of data entry fields _______________________________________________________________
3.2.4 Entry of data values, selection of data entry options ______________________________________________
3.2.5 Navigation with
3.2.6 ”Save changes” dialog _____________________________________________________________________
3.2.7 Security Passwords _______________________________________________________________________
3.3 Display ________________________________________________________________________________________
4 Installation instruction __________________________________________________________________________________
4.1 Unpacking and inspection of equipment _______________________________________________________________
4.1.1 Panel cutout dimensional information – 1/2DIN models ___________________________________________
4.1.2 Installation procedure _____________________________________________________________________
4.1.3 1/2DIN version – Assembly _________________________________________________________________
4.1.4 1/2DIN version – Dimension drawings ________________________________________________________
4.1.5 1/2DIN version – Pipe mounting _____________________________________________________________
4.2 Connection of power supply ________________________________________________________________________
4.2.1 Housing (wall mount) _____________________________________________________________________
4.3 Connector PIN definition ___________________________________________________________________________
4.3.1 TB1 and TB2 ____________________________________________________________________________
4.3.2 TB3 – Conventional (analog) Conductivity Sensors ______________________________________________
4.3.3 TB3 – Conventional (analog) pH / ORP Sensors _________________________________________________
4.3.4 TB3 – Conventional (analog) Dissolved Oxygen _________________________________________________
4.3.5 TB4 – ISM (digital) Sensors, pH and Dissolved Oxygen ___________________________________________
4.3.6 TB4 – Optical Oxygen Sensors ______________________________________________________________
4.4 Connection of Sensor – pH / ORP ____________________________________________________________________
4.4.1 Connection of ISM Sensor, pH and Dissolved Oxygen _____________________________________________
4.4.2 AK9 Cable Assignment ____________________________________________________________________
4.4.3 Connecting the Sensor to the VP Cable ________________________________________________________
4.4.4 VP Cable Assignment ______________________________________________________________________
4.4.5 Typical Wiring (Using TB3 / TB4) _____________________________________________________________
4.4.5.1 Example 1 ____________________________________________________________________
4.4.5.2 Example 2 ____________________________________________________________________
4.4.5.3 Example 3 ____________________________________________________________________
4.4.5.4 Example 4 ____________________________________________________________________
4.5 Connection of Sensor – Dissolved Oxygen _____________________________________________________________
4.5.1 Connecting the Sensor to the VP Cable ________________________________________________________
4.5.2 Typical Wiring using TB3 ___________________________________________________________________
4.6 Connection of Optical Dissolved Oxygen ______________________________________________________________
4.6.1 Connecting the Optical Sensor to a Cable ______________________________________________________
4.6.2 Optical DO Sensor Cable Assignment using TB4 _________________________________________________
5 Placing transmitter in, or out, of service ___________________________________________________________________
5.1 Placing transmitter in service _______________________________________________________________________
5.2 Placing transmitter out of service ____________________________________________________________________
6 Quick Setup __________________________________________________________________________________________
in Display ________________________________________________________________ 11
10 10 10 10 11 11 11 11 11 11 11
12 12 12
13
13 13 14 14 15 15 16 16 17 17 17 18 18 19 19 20 20 20 21 22 23 23 24 25 26 27 27 28 29 29 29
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9
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400 Printed in Switzerland 52 121 378
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Transmitter Multiparameter M400 5
7 Sensor Calibration _____________________________________________________________________________________ 32
7.1 Enter Calibration Mode ____________________________________________________________________________
7.2 Conductivity Calibration ___________________________________________________________________________
7.2.1 One-point Sensor Calibration _______________________________________________________________
7.2.2 Two-point Sensor Calibration (4-electrode sensors only) __________________________________________
7.3 Oxygen Calibration _______________________________________________________________________________
7.3.1 One-Point Sensor Calibration ________________________________________________________________
7.3.2 Two Point Sensor Calibration (only available for Optical Sensors) ___________________________________
7.3.3 Process Calibration _______________________________________________________________________
7.4 pH Calibration ___________________________________________________________________________________
7.4.1 One point calibration _____________________________________________________________________
7.4.2 Two point calibration _____________________________________________________________________
7.4.3 Process calibration _______________________________________________________________________
7.4.4 mV calibration __________________________________________________________________________
7.5 Sensor Temperature Calibration _____________________________________________________________________
7.5.1 One-Point Sensor Temperature Calibration ______________________________________________________
7.5.2 Two – Point Sensor Temperature Calibration ____________________________________________________
7.6 Edit Sensor Calibration Constants (only for analog sensor) ________________________________________________
7.7 Sensor Verification
________________________________________________________________________________ 38
8 Configuration _________________________________________________________________________________________
8.2 Measurement ___________________________________________________________________________________
8.2.1 Channel Setup ___________________________________________________________________________
8.2.2 Temperature Source (Not used with ISM Sensors) ________________________________________________
8.2.3 pH / O
Parameter related settings ____________________________________________________________ 40
2
8.2.3.1 Conductivity Temperature Compensation _____________________________________________
8.2.3.2 pH Parameters _________________________________________________________________
8.2.3.3 Dissolved Oxygen Parameters _____________________________________________________
8.2.4 Set Averaging ____________________________________________________________________________
8.3 Analog Outputs __________________________________________________________________________________
8.4 Setpoints ______________________________________________________________________________________
8.5 Alarm / Clean ___________________________________________________________________________________
8.5.1 Alarm __________________________________________________________________________________
8.5.2 Clean __________________________________________________________________________________
8.6 ISM Set up (only available if an ISM sensor is connected) _________________________________________________
8.6.1 Sensor Monitoring ________________________________________________________________________
8.6.2 CIP Cycle Limit ___________________________________________________________________________
8.6.3 SIP Cycle Limit ___________________________________________________________________________
8.6.4 Autoclaving Cycle Limit ____________________________________________________________________
8.6.5 Reset ISM Counter / Timer ___________________________________________________________________
8.7 Display ________________________________________________________________________________________
8.7.1 Measurement ____________________________________________________________________________
8.7.2 Resolution ______________________________________________________________________________
8.7.3 Backlight _______________________________________________________________________________
8.7.4 Name __________________________________________________________________________________
8.7.5 ISM Sensor Monitoring (available when ISM sensor connected) _____________________________________
8.8 Hold Analog Outputs ______________________________________________________________________________
9 System ______________________________________________________________________________________________
9.1 Set Language ___________________________________________________________________________________
9.2 USB ___________________________________________________________________________________________
9.3 Passwords _____________________________________________________________________________________
9.3.1 Changing Passwords ______________________________________________________________________
9.3.2 Configuring Menu Access for Operator _________________________________________________________
9.4 Set / Clear Lockout ________________________________________________________________________________
9.5 Reset __________________________________________________________________________________________
9.5.1 Reset System ____________________________________________________________________________
9.5.2 Reset Meter Calibration ____________________________________________________________________
9.5.3 Reset Analog Calibration ___________________________________________________________________
9.6 Set Date & Time _________________________________________________________________________________
10 PID Setup ____________________________________________________________________________________________
10.1 Enter PID Setup __________________________________________________________________________________
10.2 PID Auto / Manual ________________________________________________________________________________
10.3 Mode __________________________________________________________________________________________
10.3.1 PID Mode _______________________________________________________________________________
32 32 33 33 33 33 34 34 35 35 36 36 36 37 37 37 38
39
39 39 40
40 41 42 42 43 44 45 45 46 46 46 47 48 48 49 49 49 50 50 50 51 51
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52 52 53 53 53 54 54 54 54 55 55
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© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400 Printed in Switzerland 52 121 378
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Transmitter Multiparameter M400 6
10.4 Tune Parameters _________________________________________________________________________________ 59
10.4.1 PID Assignment & Tuning __________________________________________________________________
10.4.2 Setpoint & Deadband ______________________________________________________________________
10.4.3 Proportional Limits ________________________________________________________________________
10.4.4 Corner Points ____________________________________________________________________________
10.5 PID Display _____________________________________________________________________________________
11 Service ______________________________________________________________________________________________
11.1 Diagnostics _____________________________________________________________________________________
11.1.1 Model / Software Revision ___________________________________________________________________
11.1.2 Digital Input _____________________________________________________________________________
11.1.3 Display ________________________________________________________________________________
11.1.4 Keypad ________________________________________________________________________________
11.1.5 Memory ________________________________________________________________________________
11.1.6 Set Relay _______________________________________________________________________________
11.1.7 Read Relays _____________________________________________________________________________
11.1.8 Set Analog Outputs _______________________________________________________________________
11.1.9 Read Analog Outputs ______________________________________________________________________
11.2 Calibrate _______________________________________________________________________________________
11.2.1 Calibrate Meter (only for channel A) __________________________________________________________
11.2.1.1 Temperature ___________________________________________________________________
11.2.1.2 Current _______________________________________________________________________
11.2.1.3 Voltage _______________________________________________________________________
11.2.1.4 Rg Diagnostic __________________________________________________________________
11.2.1.5 Rr Diagnostics _________________________________________________________________
11.2.2 Calibrate Analog _________________________________________________________________________
11.2.3 Calibrate Unlock __________________________________________________________________________
11.3 Tech Service ____________________________________________________________________________________
12 Info _________________________________________________________________________________________________
12.1 Messages ______________________________________________________________________________________
12.2 Calibration Data _________________________________________________________________________________
12.3 Model / Software Revision __________________________________________________________________________
12.4 ISM Sensor Info (available when ISM sensor connected) __________________________________________________
12.5 ISM Sensor Diagnostics (available when ISM sensor connected) ____________________________________________
13 Maintenance __________________________________________________________________________________________
13.1 Front Panel Cleaning ______________________________________________________________________________
14 Troubleshooting _______________________________________________________________________________________
14.1 Changing the Fuse _______________________________________________________________________________
14.2 Warning- and Alarm list pH ________________________________________________________________________
14.3 Warning- and Alarm list O
14.4 Warning- and Alarm list Optical O
________________________________________________________________________ 72
2
__________________________________________________________________ 73
2
15 Accessories and Spare Parts _____________________________________________________________________________
16 Specifications _________________________________________________________________________________________
16.1 General specifications ____________________________________________________________________________
16.2 Electrical specifications ____________________________________________________________________________
16.3 Mechanical specifications __________________________________________________________________________
16.4 Environmental specifications _______________________________________________________________________
17
Default tables _________________________________________________________________________________________ 77
17.1 General ________________________________________________________________________________________
17.2 M400 _________________________________________________________________________________________
17.3 Error messages __________________________________________________________________________________
18 Warranty _____________________________________________________________________________________________
19 Buffer tables __________________________________________________________________________________________
19.1 Mettler-9 _______________________________________________________________________________________
19.2 Mettler-10 ______________________________________________________________________________________
19.3 NIST Technical Buffers _____________________________________________________________________________
19.4 NIST standard buffers (DIN and JIS 19266: 2000–01) ___________________________________________________
19.5 Hach buffers ___________________________________________________________________________________
19.6 Ciba (94) buffers ________________________________________________________________________________
19.7 Merck Titrisole, Riedel-de-Haën Fixanale ______________________________________________________________
19.8 WTW buffers ____________________________________________________________________________________
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61 61 61 62 62 62 62 63 63 63 64 64 64 65 65 66 66 67 67 67
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68 68 69 69 69
71
71
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75
75 76 76 76
77 78 80
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82
82 82 83 83 84 84 85 85
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400 Printed in Switzerland 52 121 378
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Transmitter Multiparameter M400 7

1 Introduction

Statement of Intended Use – The M400 Multiparameter transmitter is a single- channel online process instrument for measuring various properties of fluids. These include Conductivity, Dissolved Oxygen and pH / ORP. The M400 is not suitable for O2 gas-phase measurement applications. The M400 is available in three different levels. The level indicates the amount of measurement parameters which can be covered. The parameters are indicated on the label on the back of the system.
The M400 is a unique mixed mode transmitter who can handle conventional sensors (analog) or ISM sensors (digital).
M400 parameter fit guide Parameter Type 1 Type 2 Type 3
Analog ISM Analog ISM Analog ISM pH / ORP • Conductivity •* •* •* Oxygen ppm / ppb / traces • / – / – • / – / – • / • / – • / • / – Oxygen optical ppm / ppb • / – • / •
* Q1 / 2009
A large four line backlit Liquid Crystal Display conveys measuring data and setup information. The menu structure allows the operator to modify all operational parameters by using keys on the front panel. A menu-lockout feature, with password protection, is available to prevent the unauthorized use of the meter. The M400 Multiparameter transmitter can be configured to use its four analog and / or six relay outputs for process control.
The M400 Multiparameter transmitter is equipped with a USB communication interface. This interface provides real-time data output and complete instrument configuration capabilities for central monitoring via Personal Computer (PC).

2 Safety instructions

This manual includes safety information with the following designations and formats.
2.1 Definition of equipment and documentation symbols and designations
WARNING: POTENTIAL FOR PERSONAL INJURY.
CAUTION: possible instrument damage or malfunction.
NOTE: Important operating information.
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On the transmitter or in this manual text indicates: Caution and / or other possible hazard including risk of electric shock (refer to accompanying documents)
The following is a list of general safety instructions and warnings. Failure to adhere to these instructions can result in damage to the equipment and / or personal injury to the operator.
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400 Printed in Switzerland 52 121 378
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Transmitter Multiparameter M400 8
– The M400 Transmitter should be installed and operated only by personnel familiar with
the transmitter and who are qualified for such work.
– The M400 Transmitter must only be operated under the specified operating conditions
(see section 16). – Repair of the M400 Transmitter must be performed by authorized, trained personnel only. – With the exception of routine maintenance, cleaning procedures or fuse replacement, as
described in this manual, the M400 Transmitter must not be tampered with or altered in
any manner. – Mettler-Toledo accepts no responsibility for damage caused by unauthorized modifications
to the transmitter. – Follow all warnings, cautions, and instructions indicated on and supplied with this product. – Install equipment as specified in this instruction manual. Follow appropriate local and
national codes. – Protective covers must be in place at all times during normal operation. – If this equipment is used in a manner not specified by the manufacturer, the protection
provided by it against hazards may be impaired.
WARNINGS:
Installation of cable connections and servicing of this product require access to shock hazard voltage levels. Main power and relay contacts wired to separate power source must be disconnected before servicing. Switch or circuit breaker shall be in close proximity to the equipment and within easy reach of the OPERATOR; it shall be marked as the disconnecting device for the equipment. Main power must employ a switch or circuit breaker as the disconnecting device for the equipment. Electrical installation must be in accordance with the National Electrical Code and / or any other applicable national or local codes.
NOTE: RELAY CONTROL ACTION: the M400 transmitter relays will always de-energize on loss of
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NOTE: PROCESS UPSETS: Because process and safety conditions may depend on consistent
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NOTE: This is a 4-wire-product with an active 4–20 mA analog output.
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power, equivalent to normal state, regardless of relay state setting for powered operation. Configure any control system using these relays with fail-safe logic accordingly.
operation of this transmitter, provide appropriate means to maintain operation during sensor cleaning, replacement or sensor or instrument calibration.
Please do not supply to Pin1–Pin6 of TB2.

2.2 Correct disposal of the unit

When the transmitter is finally removed from service, observe all local environmental regulations for proper disposal.
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400 Printed in Switzerland 52 121 378
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Transmitter Multiparameter M400 9
5.90
[150]
5.90
[150]
Enter
Info
CalMenu
M300
1
2
3
ESC
4
5
6
7
8
9

3 Unit overview

The M400 models are available in 1/2DIN case size. The M400 models provide an integral IP65 housing for wall- or pipemount.

3.1 Overview 1/2DIN

1 – Hard Polycarbonate case 2 – Five Tactile-Feedback Navigation Keys 3 – Four-line LCD Display 4 – Power Supply Terminals 5 – USB Interface Port 6 – Relay Output Terminals 7 – Analog Output / Digital Input Terminals 8 – Sensor Input Terminals (analog TB, digital TB) 9 – List of parameters to be measured with this unit
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400 Printed in Switzerland 52 121 378
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Transmitter Multiparameter M400 10
Measurement
Mode M400
CalMenu Info
Quick Setup Configure System PID Setup Service Messages
ISM Sensor
Info*
Measurement
Analog Outputs
Set Points
Alarm/Clean
ISM Setup*
Set Language
USB
Passwords
Set/Clear Lockout
Reset
PID A/M
Tune Parameters
Mode
Calibrate
Tech Service
Diagnostics
Display
Hold Outputs
Set Date & Time
Channel Select
Output
Set Points
Model/Software
Revision
PID Display Setup
Calibration Data
ISM
Diagnostics*
* Only available in combination with ISM sensors
Menu Cal
Info
Enter
ESC

3.2 Control / Navigation Keys

3.2.1 Menu Structure

Below is the structure of the M400 menu tree:

3.2.2 Navigation keys

3.2.2.1 Navigating the menu tree
Enter the desired main Menu branch with the or keys. Use the and keys to
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© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400 Printed in Switzerland 52 121 378
NOTE: In order to back up one menu page, without escaping to the measurement mode,
navigate through the selected Menu branch.
move the cursor under the UP Arrow character () at the bottom right of the display screen and press [Enter].
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Transmitter Multiparameter M400 11
3.2.2.2 Escape
Press the and key simultaneously (escape) to return to the Measurement mode.
3.2.2.3 Enter
Use the key to confirm action or selections.
3.2.2.4 Menu
Press the key to access the main Menu.
3.2.2.5 Calibration mode
Press the key to enter Calibration Mode.
3.2.2.6 Info mode
Press the key to enter Info Mode
3.2.3 Navigation of data entry fields
Use the key to navigate forward or the key to navigate backwards within the changeable data entry fields of the display.

3.2.4 Entry of data values, selection of data entry options

Use the key to increase or the key to decrease a digit. Use the same keys to navigate within a selection of values or options of a data entry field.
NOTE: Some screens require configuring multiple values via the same data field (ex: configuring
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multiple setpoints). Be sure to use the or key to return to the primary field and the or
key to toggle between all configuration options before entering to the next display screen.

3.2.5 Navigation with in Display

If a is displayed on the bottom right hand corner of the display, you can use the or the
key to navigate to it. If you click [ENTER] you will navigate backwards through the menu
(go back one screen). This can be a very useful option to move back up the menu tree without having to exit into the measuring mode and re-enter the menu.
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Transmitter Multiparameter M400 12

3.2.6 ”Save changes” dialog

Three options are possible for the ”Save changes” dialog: Yes & Exit (Save changes and exit to measuring mode), ”Yes & ” (Save changes and go back one screen) and ”No & Exit” (Don’t save changes and exit to measuring mode). The ”Yes & ” option is very useful if you want to continue configuring without having to re-enter the menu.

3.2.7 Security Passwords

The M400 transmitter allows a security lock-out of various menus. If the security lock-out feature of the transmitter has been enabled, a security password must be entered to allow access to the menu. See section 9.3 for more information.

3.3 Display

NOTE: In the event of an alarm or other error condition the M400 Transmitter will display a
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flashing in the upper right corner of the display. This symbol will remain until the condition that caused it has been cleared.
NOTE: During calibrations (Channel A), clean, Digital In with Analog Output / Relay / USB in Hold
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NOTE: Channel A (A is shown on the left side of the display) indicates that a conventional
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state, a flashing ”H” (Hold) will appear in the upper left corner of the display. During calibration on Channel B, a flashing ”H” (Hold) will appear in the second line. Change to B and flash. This symbol will remain for 20 sec., after end of calibration. This symbol will remain for 20 seconds until after the calibration or clean is completed. This symbol will also disappear when Digital In is deactivated.
Sensor is connected to the transmitter. Channel B (B is shown on the left side of the display) indicates, that an ISM Sensor is connected
to the transmitter. The M400 is a single input channel transmitter, and only one sensor can be connected at the
same time.
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400 Printed in Switzerland 52 121 378
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Transmitter Multiparameter M400 13
5.39
+0.02
–0.00
[137
+0.5
]
–0.0
5.39
+0.02
–0.00
[137
+0.5
]
–0.0
PANEL CUT-OUT

4 Installation instruction

4.1 Unpacking and inspection of equipment

Inspect the shipping container. If it is damaged, contact the shipper immediately for instructions. Do not discard the box.
If there is no apparent damage, unpack the container. Be sure all items shown on the packing list are present. If items are missing, notify Mettler-Toledo immediately

4.1.1 Panel cutout dimensional information – 1/2DIN models

1/2DIN Model transmitters are designed with an integral rear cover for stand-alone wall mount installation. The unit may also be wall mounted using the integral rear cover. See installation instructions in Section 4.1.2.
Below are cut-out dimensions required by the 1/2DIN models when mounted within a flat panel or on a flat enclosure door. This surface must be flat and smooth. Textured or rough surfaces are not recommended and may limit the effectiveness of the gasket seal provided.
Optional hardware accessories are available that allow for panel- or pipe-mount. Refer to Section 15 for ordering information.
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1
2
3

4.1.2 Installation procedure

For Wall Mount: – Remove rear cover from front housing. – Start by unscrewing the four screws located on the face of the transmitter, in each corner.
This allows the front cover to swing away from the rear housing. – Remove the hinge-pin by squeezing the pin from each end.
This allows the front housing to be removed from the rear housing – Drill out wall-mount breakthroughs in the rear housing. – Mount rear housing to wall using appropriate mounting hardware for wall surface. Be sure
it is level and securely fastened and the installation adheres to any and all clearance
dimensions required for transmitter service and maintenance. – Insert two black protective covers (supplied with the M400 transmitter) over the fixing
hardware and into the space on the inside back cover, as shown in the drawing below.
This is necessary to maintain unit integrity. – Replace the front housing to the rear housing. The unit is ready to be wired.
For Pipe Mount: – Use only manufacturer-supplied components for pipe-mounting the M400 transmitter and
install per the supplied instructions. See section 15 for ordering information.

4.1.3 1/2DIN version – Assembly

1 3 Pg 13.5 cable glands 2 2 plastic plugs 3 4 screws
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Transmitter Multiparameter M400 15
84 mm
3.31"
42 mm
1.65"
136 mm/5.35"
15 0
mm
/
5. 9
"
6.5 mm
0.256"
116 mm/4.57"
150 mm/5.9"
29 mm
1.14"
29 mm
1.14"
90 mm/3.54"
80 mm/3.15"
75 mm/2.95"
35 mm/
1.38"
6 mm/
0.236"
90 mm/3.54"
138 mm ± 0.5 mm
5.43" ± 0.02"
138 mm ± 0.5 mm
5.43" ± 0.02"
40 ... �60 mm1.57... �2.36"

4.1.4 1/2DIN version – Dimension drawings

4.1.5 1/2DIN version – Pipe mounting

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Transmitter Multiparameter M400 16
1
2

4.2 Connection of power supply

All connections to the transmitter are made on the rear panel of all models.
Be sure power to all wires is turned off before proceeding with the installation. High voltage may be present on the input power wires and relay wires.
A two-terminal connector on the rear panel of all M400 models is provided for power connection. All M400 models are designed to operate from a 20–30 VDC or a 100 to 240 VAC power source. Refer to specifications for power requirements and ratings and size power wiring accordingly (AWG 14, wire cross-section 2.5 mm2).
The terminal block for power connections is labeled ”Power” on the rear panel of the transmitter. One terminal is labeled – N for the Neutral wire and the other + L for the Line (or Load) wire. The terminals are suitable for single wires and flexible leads up to 2.5 mm2 (AWG 14). There is no earth ground terminal on the transmitter. For this reason the internal power wiring within the transmitter is double insulated and the product label designates this using the h symbol.

4.2.1 Housing (wall mount)

1 Connection of power supply 2 Terminal for sensors
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Transmitter Multiparameter M400 17
TB2 for1⁄2DIN
1 AO1+ 2 AO1–/AO2– 3 AO2+ 4 AO3+ 5 AO3–/AO4– 6 AO4+ 7 DI1+ 8 DI1–/DI2– 9 DI2+
1 NO1 2 COM1 3 NC1 4 NO2 5 COM2 6 NC2 7 COM5
8 NC5
9 COM6 10 NO6 11 NO3 12 COM3 13 NO4 14 COM4
TB2 TB3
TB4
TB1
1 14
1 9 1 9 1 9
TB1 for1⁄2 DIN
4.3 Connector PIN definition

4.3.1 TB1 and TB2

Power connections are labeled – N for Neutral and + L for Line, for 100 to 240 VAC or 20–30 VDC.
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NO = normally open (contact open if un-actuated). AO = Analog Output NC = normally closed (contact closed if un-actuated). DI = Digital Input
NOTE: This is a 4-wire-product with an active 4–20 mA analog output.
Please do not supply to Pin1–Pin6 of TB2.

4.3.2 TB3 – Conventional (analog) Conductivity Sensors

Pin no. Sensor wire Color Function
1 white Cnd inner 1 2 white / blue Cnd outer 1 3 blue Cnd inner 2 4 black Cnd outer 2 / Shield 5 not used 6 bare shield RTD ret / GND 7 red RTD sense 8 green RTD 9 +5V
Transparent not used.
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Transmitter Multiparameter M400 18

4.3.3 TB3 – Conventional (analog) pH / ORP Sensors

pH / ORP sensors use 52 300 1XX series VP cables, or 10 001 XX02 series AS9 cables (ORP only).
Pin no. Sensor wire Color Function
1 Coax inner / transparent Glass 2 not used 3* Coax shield / red Reference 4* green / yellow, blue Solution GND / Shield 5 not used 6 white RTD ret / GND 7 RTD sense 8 green RTD 9 +5V
grey (no connection)
Take care that AS9 cable and AK9 cable have the same configuration. So, if you want AS9 cable with InPro 2000 and AK9 cable with InPro 3030 connect to TB3, do it as DPAS sensor. Pin no. 1 – Sensing (electrode). Pin no. 3 – Reference (Install jumper 3 to 4).
NOTE: * Install Jumper 3 to 4 when used without Solution Ground.
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4.3.4 TB3 – Conventional (analog) Dissolved Oxygen
These sensors use 52 300 1XX series VP cables.
Pin no. Sensor wire Color Function
1* not used 2 Coax Shield / red Anode 3* not used 4* green / yellow Shield / GND 5 Coax Inner / transparent Cathode 6 white, grey Temperature, Guard 7 not used 8 green Temperature 9 +5V
Blue wire not used.
NOTE: * Install Jumper (supplied) 1 to 3 to 4 when using InPro 6900 (ppb measurement).
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Transmitter Multiparameter M400 19
4.3.5 TB4 – ISM (digital) Sensors, pH and Dissolved Oxygen
The wiring of the digital 9 terminal connectors is:
Pin no. Sensor wire Color Function
1 24 VDC 2 GND (24 VDC) 3 Cable core 1-Wire 4 Shield GND (5 VDC) 5 No connection 6 GND (5 VDC) 7 RS485– 8 RS485+ 9 5 VDC
– ISM digital sensors can only be connected on TB4. – Analog sensors can only be connected on TB3.
4.3.6 TB4 – Optical Oxygen Sensors
Pin no. Sensor wire Color Function
1 brown 24 VDC 2 black GND (24 VDC) 3 1-Wire 4 grey and yellow GND (5 VDC) 5 No connection 6 GND (5 VDC) 7 blue RS485– 8 white RS485+ 9 5 VDC
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A
B

4.4 Connection of Sensor – pH / ORP

4.4.1 Connection of ISM Sensor, pH and Dissolved Oxygen

NOTE: Connect the Sensor and screw the plug head clockwise (hand tight).
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4.4.2 AK9 Cable Assignment

A: 1-wire data (transparent) B: Ground/shield
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A B C D E F S
A
F
C
B
E
D

4.4.3 Connecting the Sensor to the VP Cable

NOTE: Cable lengths > 20 m can worsen the response during pH measurement. Be sure to
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observe the sensor instruction manual.
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Glass electrode
Ref. electrode
Solution ground
T3
T1
T2
Outer shield
A transparent
B red
D blue
C gray
E white
F green
S green/yellow
C = 220 nF

4.4.4 VP Cable Assignment

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T1 / T2 = Temperature probe for 2-wire connection T3 = Additional connection for temperature probe (3-wire connection)
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Cable
Combination pH electrode
Temperature probe
yellowgreen
green
red
transparent
white
Jumper
1
2
3
4
5
6
7
8
9

4.4.5 Typical Wiring (Using TB3 / TB4)

4.4.5.1 Example 1
pH measurement without Solution Ground
NOTE: Jumper Terminals 3 and 4.
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Wire colors only valid for connection with VP cable; blue and grey not connected. 1 – Glass 2 – Not used 3 – Reference 4 – Shield / GND 5 – Not used 6 – Solution GND / RTD ret 7 – Not used 8 – RTD 9 – Not used
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1
2
3
4
5
6
7
8
9
yellowgreen
green
red
transparent
white
Combination pH electrode with RTD and SG
Temperature probe
blue
Cable
4.4.5.2 Example 2
pH measurement with Solution Ground
NOTE: Wire colors only valid for connection with VP cable, grey not connected.
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1 – Glass 2 – Not used 3 – Reference 4 – Shield / Solution GND 5 – Not used 6 – GND / RTD ret 7 – Not used 8 – RTD 9 – Not used
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Cable
ORP electrode
Temperature probe
Reference electrode
Sensing electrode
1
2
3
4
5
6
7
8
9
Jumper
4.4.5.3 Example 3
ORP (redox) measurement (temperature optional)
NOTE: Jumper Terminal 3 and 4
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1 – Platinum 2 – Not used 3 – Reference 4 – Shield / GND 5 – Not used 6 – RTD ret 7 – Not used 8 – RTD 9 – Not used
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1
2
3
5
6
7
8
9
yellowgreen
green
red
transparent
white
Combination pH electrode with RTD and SG
Temperature probe
blue
Cable
Not connected
4
Jumper
4.4.5.4 Example 4
ORP measurement with pH Solution ground electrode (e.g. InPro 3250SG, InPro 4800SG).
NOTE: Jumper Terminal 3 and 4
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1 – Platinum 2 – Not used 3 – Reference 4 – Shield / GND 5 – Not used 6 – RTD ret 7 – Not used 8 – RTD 9 – Not used
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A B C D E F S
A
F
C
B
E
D
4.5 Connection of Sensor – Dissolved Oxygen

4.5.1 Connecting the Sensor to the VP Cable

NOTE: Be sure to observe the sensor instruction manual.
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red
transparent
green
white
yellow/green
gray
blue
1
2
3
4
5
6
7
8
9

4.5.2 Typical Wiring using TB3

NOTE: Wire colors only valid for connection with VP cable, blue not connected.
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NOTE: Install Jumper (supplied) 1 to 3 to 4 when using InPro 6900 (ppb measurement).
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M400 connector:
1 – not used 2 – Anode 3 – not used 4 – Shield / GND 5 – Cathode 6 – NTC ret, Guard 7 – Not used 8 – NTC 2 9 – not used
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A B C D E F
A
B
C
D
E
F
gray
black
brown
yellow
black
blue
1
2
3
4
5
6
7
8
9

4.6 Connection of Optical Dissolved Oxygen

4.6.1 Connecting the Optical Sensor to a Cable

NOTE: Connect the Sensor and screw the plug head clockwise (hand tight).
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4.6.2 Optical DO Sensor Cable Assignment using TB4

1 – 24 VDL 2 – GND 24 VDL 3 – not used 4 – GND (5 VDL) 5 – not used 6 – not used 7 – RS 485– 8 – RS 485+ 9 – not used
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5 Placing transmitter in, or out, of service

5.1 Placing transmitter in service

After connecting the transmitter to power supply circuit, it will be active as soon as the circuit is powered.

5.2 Placing transmitter out of service

First disconnect the unit from the main power source, then disconnect all remaining electrical connections. Remove the unit from the wall / panel. Use the installation instruction in this manual as reference for dis-assembling mounting hardware. All transmitter settings stored in memory are non volatile.
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6 Quick Setup

(PATH: Menu / Quick Setup)
Select Quick Setup and press the [ENTER] key. Enter the security code if necessary (see section 9.3)
Note: Please find the complete description of the Quick Setup routine described in the separate
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Note: Refer to section 3.3 for information on menu navigation.
booklet ”Quick Setup Guide for Transmitter M400” enclosed in the box.
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7 Sensor Calibration

(PATH: Cal)
The calibration key allows the user one-touch access to Sensor calibration and verification features.
NOTE: During Calibration on Channel A, a flashing ”H” (Hold) in the upper left corner of the
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display indicates a calibration is in process with a Hold condition active. (The hold output function needs to be activated.) See also chapter 3.3.

7.1 Enter Calibration Mode

While in Measurement mode press the key. Press the or key to select the type of calibration desired.
After selecting ”Sensor”, use the key to move to the next line. Select the channel ”A” or ”B” to be calibrated. Select the desired Sensor Calibration task. The choices for each sensor type are: Conductivity = Conductivity, Resistivity, Temperature*, Edit*, Verify Oxygen = Oxygen, Temperature*, Edit*, Verify pH = pH, mV, Temperature*, Edit pH*, Edit mV, Verify Press [ENTER].
* only on channel ”A”
After every successful calibration, the three options are available: Adjust: Calibration values will be overtaken und used for the measurement. Additionally,
the data will be stored in the calibration history*.
Calibrate: Calibration values will be stored in the calibration history* for documentation,
but will not be used for the measurement. The calibration values from the last valid Adjustment will be further used for the measurement.
Abort: Calibration values will be discarded. * only available with ISM sensors

7.2 Conductivity Calibration

This feature provides the ability to perform a one-point or two-point Conductivity ”Sensor” calibration. The procedure described below works for both types of calibrations. There is no reason to perform a two-point calibration on a two-electrode conductivity sensor. Four electrode sensors do require a two-point calibration.
NOTE: When performing calibration on a conductivity sensor, results will vary depending on the
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methods, calibration apparatus and / or quality of reference standards used to perform the calibration.
Enter Conductivity Sensor Calibration mode as described in section 7.1.
Choose ”standard” or ”linear” compensation mode.
Press [ENTER].
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7.2.1 One-point Sensor Calibration

(Display reflects typical Conductivity Sensor calibration)
Select 1 point Calibration and press [ENTER].
Enter the Value of calibration Point 1 and then press the [ENTER] key to start calibration. The value in the 2nd text line is the actual measured value from the sensor prior to calibration.
After the calibration the Multiplier or slope calibration factor ”M” and the Adder or offset calibration factor ”A” are displayed.
After a successful calibration, the calibration values are taken over and stored in the cal history (Adjust), only stored in the cal history (Calibrate) or aborted.

7.2.2 Two-point Sensor Calibration (4-electrode sensors only)

Enter Conductivity Sensor Calibration mode as described in section 7.1. Select 2 point Calibration and press [ENTER].
CAUTION: Rinse sensors with a high-purity water solution between calibration points to prevent contamination of the reference solutions.
Enter the Value of Point 1 and press the [ENTER] key. Place the sensor into the second reference solution. Enter the Value of Point 2 and press the [ENTER] key to start the calibration.
After the calibration the Multiplier or slope calibration factor ”M” and the Adder or offset calibration factor ”A” are displayed.
After a successful calibration, the calibration values are taken over and stored in the cal history (Adjust), only stored in the cal history (Calibrate) or aborted.

7.3 Oxygen Calibration

Dissolved Oxygen calibration is performed as either a one-point or process calibration.

7.3.1 One-Point Sensor Calibration

Before air calibration, for highest accuracy, enter the barometric pressure and relative lumidity, as described in section 8.2.3.3.
Enter Oxygen Calibration mode as described in section 7.1.
A DO sensor calibration is always either a one point Air (Slope) or a Zero (Offset) calibration. A one point slope calibration is done in air and a one point offset calibration is done at 0 ppb DO. A one-point zero dissolved oxygen calibration is available but not normally recommended since zero DO is very hard to achieve.
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The calibration of an optical sensor is always a calibration of the phase of the fluorescence signal towards the internal reference. During a one point calibration (Air or zero) only the phase at this point is measured and the phase at the other point (Air or Zero is internally calculated. A zero-point calibration is only recommended if high accuracy at low oxygen level (below 5% Air) is needed.
Select 1 point followed by either Slope (Phi 100) or ZeroPt (Phi 0) as the calibration type. Press [ENTER].
Enter the value for Point 1 including a decimal point and units. The value in the second text line is the value being measured by the transmitter and sensor in the units selected by the user. Press [ENTER] when this value is stable to perform the calibration.
After the calibration the slope calibration factor S (Phi 100) and the offset calibration factor Z (Phi 0) are displayed.
After a successful calibration, the calibration values are taken over and stored in the cal history (Adjust), only stored in the cal history (Calibrate) or aborted.

7.3.2 Two Point Sensor Calibration (only available for Optical Sensors)

A 2-points calibration is a combination of first a calibration in air (100%) where a new phase P100 is measured and then a calibration in nitrogen (0%) where a new phase P0 is measured. This calibration routine gives the most accurate calibration curve over the whole measuring range.

7.3.3 Process Calibration

Enter Oxygen Calibration mode as described in section 7.1.
Select Process followed by either Slope or ZeroPt (Phi 100 or Phi 0) as the calibration type. Press [ENTER]
Take a sample and press the [ENTER] key again to store the current measuring Value. To show the ongoing Calibration Process, A or B (depending on the channel) is blinking in the display.
After determining the O2 Value of the Sample press the key again to proceed with the calibration. Enter the O2 value of the sample then press the [ENTER] key to start calibration.
After a successful calibration, the calibration values are taken over and stored in the cal history (Adjust), only stored in the cal history (Calibrate) or aborted.
During a process calibration of an optical Sensor the phase of the fluorescence light at a point between 5% and 100% air is measured and the phases at 100% and 0% are calculated to determine a new calibration curve.
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Process calibration at oxygen values below 5% air saturation is only available for M400 Type 3 in combination with InPro 6970 i.
The InPro 6880 i and InPro 6870 i only provide process calibration at oxygen values above 5% air saturation.

7.4 pH Calibration

For pH sensors, the M400 transmitter features one-point, two-point (Auto or Manual mode) or process calibration with 8 preset buffer sets or manual buffer entry. Buffer values refer to 25 °C. To calibrate the instrument with automatic buffer recognition, you need a standard pH buffer solution that matches one of these values. (See section 8.2.3.2 for configuring modes and selecting buffer sets.) Please select the correct buffer table before using automatic calibration (see chapter 19).
After every successful calibration, the three following options are available: Adjust: Calibration values are taken over and used for the measurement. Additionally,
the data’s will be stored in the calibration history.
Calibrate: Calibration values will be stored in the calibration history, but will be not used for
the measurement. The calibration values from the last valid Adjustment will be further used for the measurement.
Abort: Calibration values will be aborted.
Enter pH Calibration mode as described in section 7.1.

7.4.1 One point calibration

Select 1 point Calibration.
Place the electrode in the buffer solution and press the [ENTER] key to start the calibration.
Auto mode: The display shows the buffer that the transmitter has recognized (Point 1) and the measured value. Manual mode: Enter the buffer value and press [ENTER] to proceed.
As soon as the drift conditions have stabilized (or [ENTER] pressed in manual mode) the display changes to show the slope calibration factor S and the offset calibration factor Z.
After a successful calibration, the calibration values are taken over and stored in the cal history (Adjust), only stored in the cal history (Calibrate) or aborted.
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7.4.2 Two point calibration

Select 2 point Calibration. Place the electrode in the first buffer solution and then press the [ENTER] key.
Auto mode: The display shows the buffer that the transmitter has recognized (Point 1) and the measured value. Manual mode: Enter the buffer value and press [ENTER] to proceed.
As soon as the drift conditions have stabilized (or [ENTER] pressed in manual mode) the display changes and prompts you to place the electrode in the second buffer solution.
As soon as the drift conditions have stabilized (or [ENTER] pressed in manual mode) the display changes to show the slope calibration factor S and the offset calibration factor Z.
After a successful calibration, the calibration values are taken over and stored in the cal history (Adjust), only stored in the cal history (Calibrate) or aborted.

7.4.3 Process calibration

Select Process Calibration.
Take a sample and press the [ENTER] key again to store the current measuring Value. To show the ongoing Calibration Process, A or B (depending on the channel) is blinking in the display.
After determining the pH Value of the Sample, press the key again to proceed with the calibration.
Enter the pH value of the sample then press the [ENTER] key to start calibration.
After a successful calibration, the calibration values are taken over and stored in the cal history (Adjust), only stored in the cal history (Calibrate) or aborted.

7.4.4 mV calibration

Enter mV Calibration mode as described in section 7.1.
The user can now enter Point 1. The offset calibration factor is calculated as: Point1 + mV (measured value) and displayed on the next screen.
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Z is the newly calculated offset calibration factor. The slope calibration factor S is always 1 and does not enter the calculation.
After a successful calibration, the calibration values are taken over and stored in the cal history (Adjust), only stored in the cal history (Calibrate) or aborted.

7.5 Sensor Temperature Calibration

Enter Sensor Calibration mode as described in section 7.1 and select Temperature.

7.5.1 One-Point Sensor Temperature Calibration

Select 1 point calibration. Slope or Offset can be selected with the 1 point calibration. Select Slope to recalculate the Slope factor M (Multiplier) or Offset to recalculate the offset calibration factor A (Adder).
Enter the value for Point 1 and press [ENTER].
After a successful calibration, the calibration values are taken over and stored in the cal history (Adjust), only stored in the cal history (Calibrate) or aborted.

7.5.2 Two – Point Sensor Temperature Calibration

Select 2 point as calibration Type.
Enter the value for Point 1 and press [ENTER].
Enter the value for Point 2 and press [ENTER].
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After a successful calibration, the calibration values are taken over and stored in the cal history (Adjust), only stored in the cal history (Calibrate) or aborted.

7.6 Edit Sensor Calibration Constants (only for analog sensor)

Enter Calibration mode as described in section 7.1 and select Edit, Edit pH or Edit mV.
All calibration constants for the selected sensor channel are displayed. Primary measurement constants (p) are displayed on Line 3. Secondary measurement (temperature) constants (s) for the sensor are displayed on Line 4.
The calibration constants can be changed in this menu.
Select Yes to save the new calibration values and the successful Calibration is confirmed on the display.
NOTE: Each time a new conductivity sensor is connected to the M400 transmitter, it is
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necessary to enter the unique calibration constant located on the sensor label.
7.7 Sensor Verification
Enter Calibration mode as described in section 7.1. and select Verify.
The measured signal of the primary and the secondary measurement in electrical units are shown. The meter calibration factors are used when calculating these values.
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Configure
Measurement Analog Outputs Set Points Alarm/Clean ISM Setup* Display Hold Outputs
* Only available in combination with ISM sensors
8 Configuration
(PATH: Menu / Configure)
8.1 Enter Configuration Mode
While in Measurement mode, press the key. Press the or key to navigate to the Configure – Menu and press [ENTER].

8.2 Measurement

(PATH: Menu / Configure / Measurement)
Enter configuration mode as described in Section 8.1.
Press the [ENTER] key to select this Menu. The following sub menus can now be selected: Channel Setup, Temperature Source, Comp / pH / O
and Set Averaging.
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8.2.1 Channel Setup

(PATH: Menu / Configure / Measurement / Channel Setup / Select Channel ISM)
Press the [ENTER] key to select the ”Channel Setup” Menu.
Conventional (analog) Sensor
Select Sensor Type (Analog or ISM) and press [ENTER]. Available Measurement Types are (depends on transmitter type)
Measurement parameter Type
pH / ORP = pH or ORP 1,2,3 Cond (2) = 2 electrode conductivity 1,2,3 Cond (4) = 4 electrode conductivity 1,2,3 O2 hi = only Dissolved oxygen (ppm) (no gas) 2,3 O2 lo = only Dissolved oxygen (ppb) (no gas) 3
The 4 lines of the display can now be configured with sensor channel ”A” (if analog Sensor is chosen) or ”B” (if ISM Sensor is chosen) for each line of the display as well as measurements and unit multipliers. Pressing the [ENTER] key will display the selection for lines a, b, c and d.
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ISM (digital) Sensor
If an ISM sensor is connected, the transmitter automatically (Parameter = Auto) recognizes the type of sensor. You can also fix the transmitter to a certain measurement parameter (Parameter = pH / ORP, Cond (2), Cond(4), O2 hi or 02 lo), depending on the type of transmitter you have. Choose the display setting for line a, b, c, d.
Measurement parameter Type
pH / ORP = pH or ORP 1,2,3 Cond (2) = 2 electrode conductivity* 1,2,3 Cond (4) = 4 electrode conductivity* 1,2,3 O2 hi = Dissolved oxygen (ppm) 2,3 O2 lo = Dissolved oxygen (ppb, traces*) 3 O2 opt hi = Dissolved oxygen (ppm) optical 2,3 O2 opt lo = Dissolved oxygen (ppb) optical 3 * Available as of Q4 / 2008
Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will discard the entered values and return to the measurement display screen, selecting Yes will save changes made.

8.2.2 Temperature Source (Not used with ISM Sensors)

Press the [ENTER] key to select this: Menu / Configure / Measurement / Temperature Source. The following options can be chosen:
Auto: The transmitter automatically recognizes the temperature source. Use NTC22K: Input will be taken from the sensor attached. Use Pt1000: Temperature input will be taken from the sensor attached.
Use Pt100: Input will be taken from the sensor attached. Fixed = 25 °C: Allows a specific temperature value to be entered. It must be chosen when
customer use pH sensor without temperature source.

8.2.3 pH / O2 Parameter related settings

Press [ENTER] to select this: Menu / Quick Setup / Channel select ISM / Parameter. Additional measurement and calibration parameters can be set for each parameter; conductivity, pH and O2.
For more details, please see the following explanations depending on the selected parameter.
8.2.3.1 Conductivity Temperature Compensation
The temperature compensation mode for any of the four measurement lines can be selected. Temperature compensation should be matched to the characteristics of the application. Choices are ”Standard” and ”Linear”. Press [ENTER] and save changes.
Standard compensation includes compensation for non-linear high purity effects as well as conventional neutral salt impurities and conforms to ASTM standards D1125 and D5391.
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Linear compensation adjusts the reading by a factor expressed as a ”% per °C” (deviation from 25 °C). Use only if the sample has a well-characterized linear temperature coefficient. The factory default setting is 2.0% / °C.
8.2.3.2 pH Parameters
Select pH and press [ENTER].
Select the Drift control for calibration as Auto (drift and time criteria have to be fulfilled) or Manual (The user can decide when a signal is stable enough to complete calibration) followed by the relevant buffer table for the automatic buffer recognition. If the drift rate is less than 0.4 mV over a 19 second interval then the reading is stable and the calibration is done using the last reading. If the drift criteria is not met within 300 seconds then the calibration times out and the message ”Calibration Unsuccessful Press Enter to Continue” is displayed.
For automatic buffer recognition during calibration, select the buffer solution set that will be used: Mettler-9, Mettler-10, NIST Tech, NIST Std = JIS Std, HACH, CIBA, MERCK, WTW or None. See Section 20 for buffer values. If the auto buffer feature will not be used or if the available buffers are different from those above, select None.
STC is the solution temperature coefficient in units of pH / °C referenced to 25 °C (Default =
0.000 for most applications). For pure waters, a setting of 0.016 pH / °C should be used. For low conductivity power plant samples near 9 pH, a setting of 0.033 pH / °C should be used. These positive coefficients compensate for the negative temperature influence on the pH of these samples.
IP is the isothermal point value (Default = 7.000 for most applications). For specific compensation requirements or non standard inner buffer value, this value can be changed.
The option to enter a fixed Calibration Temperature is given. ”Fixed” allows a specific temperature value to be entered. Selecting ”No” means the Temperature configured under 8.2.2 will be used for the Calibration.
Pressing [ENTER] again will bring up the Save Changes dialog. Selecting No will discard the entered values and return to the measurement display screen, selecting Yes will save changes made.
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8.2.3.3 Dissolved Oxygen Parameters
Select O2 and press [ENTER]
Enter the Atmospheric pressure. The default value for AtmPres is 759.8 and the default unit is mmHg.
Enter the Process Pressure. The units for process pressure and atmospheric pressure do not have to be the same.
The salinity of the measured solution and the relative humidity of the calibration gas can also be entered. The allowed values for Relative Humidity are in the range 0.00 to 100%. When no humidity measurement is available, use 50% (default value).
Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will discard the entered values and return to the measurement display screen, selecting Yes will save changes made.

8.2.4 Set Averaging

Press the [ENTER] key to select this: Menu / Configure / Measurement / Set Averaging. The averaging method (noise filter) for each measurement line can now be selected. The options are Special (Default), None, Low, Medium and High:
None = no averaging or filtering Low = equivalent to a 3 point moving average Medium = equivalent to a 6 point moving average High = equivalent to a 10 point moving average Special = averaging depending on signal change (normally High averaging but Low averaging
for large changes in input signal)
Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will discard the entered values and return to the measurement display screen, selecting Yes will save changes made.
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8.3 Analog Outputs

(PATH: Menu / Configure / Analog Outputs)
Enter configuration mode as described in Section 8.2.
Press the [ENTER] key to select this Menu, which lets you configure the 4 Analog Outputs. Once analog outputs have been selected, use the and buttons to navigate between configurable parameters. Once a parameter is selected, its setting can be selected per the following table:
When an Alarm Value is selected, the analog output will go to this value if any alarm condition occurs.
Parameter Selectable Values
Aout: 1, 2, 3 or 4 (default is 1) Measurement: a, b, c, d or blank (none) (default is blank) Alarm Value: 3.6 mA, 22.0 mA or Off (default is off)
The Aout type can be Normal, Bi-Linear, Auto-Range or Logarithmic. The range can be 4–20mA or 0–20mA. Normal provides linear scaling between the minimum and maximum scaling l imits and is the default setting. Bi-Linear will also prompt for a scaling value for the mid-point of the signal and allows two different linear segments between the minimum and maximum scaling limits.
Enter the minimum and maximum Value of Aout.
If Auto-Range was selected then Aout max1 can be configured. Aout max1 is the maximum value for the first range on Auto-Range. The maximum value for the second range on Auto­Range was set in the previous menu. If Logarithmic Range was selected, it will also prompt for the number of decades as ”Aout1 # of Decades =2”.
The value for the Hold mode can be configured to hold the Last value or can be set to a Fixed value.
Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will discard the entered values and return to the measurement display screen, selecting Yes will save changes made.
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8.4 Setpoints

(PATH: Menu / Configure / Setpoints)
Enter configuration mode as described in Section 8.1.
Press the [ENTER] key to select this Menu.
Up to 6 Setpoints can be configured on any of the measurements (a thru d). The possible Setpoint types are Off, High, Low, Outside and Between.
An ”Outside” Setpoint will cause an alarm condition whenever the measurement goes above its high limit or below its low limit. A ”Between” Setpoint will cause an alarm condition to occur whenever the measurement is between its high and low limits.
Enter the desired value(s) for the Setpoint and press [ENTER]
This screen provides the option to configure a setpoint to be active on an over range condition. Select the setpoint and ”Yes” or ”No”. Select the desired relay that will activate when the setpoint alarm condition is reached.
Over Range Once configured, the selected relay will be activated if a sensor over-range condition is detected on the assigned input channel.
Delay
Enter the delay time in seconds. A time delay requires the setpoint to be exceeded continuously for the specified length of time before activating the relay. If the condition disappears before the delay period is over, the relay will not be activated.
Hysteresis Enter the hysteresis as a percentage-value. A hysteresis value requires the measurement to return within the setpoint value by a specified percentage before the relay is deactivated.
For a high setpoint, the measurement must decrease more than the indicated percentage below the setpoint value before the relay is deactivated. With a low setpoint, the measurement must rise at least this percentage above the setpoint value before the relay is deactivated. For example, with a high setpoint of 100, when this value is exceeded, the measurement must fall below 90 before the relay is deactivated.
Hold Enter the Relay Hold Status of ”Last”, ”On” or ”Off”. This is the state the Relay will go to during a Hold status.
State
Relay contacts are in normal state until the associated setpoint is exceeded, then the relay is activated and the contact states change.
Select ”Inverted” to reverse the normal operating state of the relay (i.e. Normally open contacts are in a closed state, and normally closed contacts are in an open state, until the setpoint is exceeded). ”Inverted” relay operation is functional when power is applied to the M400 transmitter. Relay No 2 always operates inverted. All other relays can be configured.
Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will discard the entered values and return to the measurement display screen, selecting Yes will save changes made.
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8.5 Alarm / Clean

(PATH: Menu / Configure / Alarm / Clean)
Enter configuration mode as described in Section 8.1.
This Menu allows the configuration of Alarm and Clean functionality.

8.5.1 Alarm

To select ”Setup Alarm”, press the or key so that ”Alarm” is flashing.
Using the and buttons, navigate to ”Use Relay #”. Using the or keys, select a relay to be used for the Alarm and press [ENTER].
One of the following events may be alarmed:
1. Power Failure
2. Software Failure
3. Rg Diagnostics – pH glass membrane resistance (only for pH sensors)
4. Rr Diagnostics – pH reference resistance (only for pH sensors)
5. Cond cell open (only for cond sensors)
6. Cond cell shorted (only for cond sensors)
7. Channel B disconnected (only for ISM sensors)
8. Shaft Error (only for optical Sensors)
9. Signal Error (only for optical Sensors)
10. Hardware Error (only for optical Sensors)
Detailed information about error messages for an optical sensor you find in the Menu/Service/Diagnostics/O2 optical.
If any of these are set to Yes, an alarm signal will be initiated, the selected relay will be activated, and an alarm message will be recorded if:
1. there is a power failure or power cycling
2. the software watchdog performs a reset
3. Rg is out of tolerance – for example, broken measuring electrode (only for pH sensors)
4. Rr is out of tolerance – for example, coated or depleted reference electrode (only for pH sensors)
5. If the conductivity sensor is on air (for example in an empty pipe)
6. If the conductivity sensor has a short cut
7. If no sensor is connected on channel B (only for ISM sensors)
For 1 and 2 the alarm indicator will be turned off when the alarm message is cleared. It will reappear if the power is constantly cycling or if the watchdog is repeatedly resetting the system.
Only for pH sensors
For 3 and 4 the alarm indicator will go off if the message is cleared and the sensor has been replaced or repaired so that the Rg and Rr values are within specification. If the Rg or Rr message is cleared and Rg or Rr is still out of tolerance then the alarm will stay on and the message will reappear. The Rg and Rr alarm can be turned off by going into this menu and setting Rg Diagnostics and / or Rr Diagnostics to No. The message can then be cleared and the alarm indicator will be off even though Rg or Rr is out of tolerance.
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Each Alarm Relay can be configured in either a Normal or Inverted state. In addition, a Delay for the activation can be set. For more information, refer to Section 8.4.
If power failure is turned on, only inverted state is possible and cannot be changed.
Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will discard the entered values, selecting Yes will make the entered values the current ones.

8.5.2 Clean

Configure the Relay to be used for the cleaning cycle. The Default value is Relay 1.
The Cleaning Interval can be set from 0.000 to 999.9 hours. Setting it to 0 turns the clean cycle off. The cleaning time can be 0 to 9999 seconds and must be smaller than the Cleaning Interval.
Select the desired Relay state: Normal or Inverted.
Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will discard the entered values and return to the measurement display screen, selecting Yes will save changes made.

8.6 ISM Set up (only available if an ISM sensor is connected)

8.6.1 Sensor Monitoring

The sensor monitoring options can be turned on or off and every Alarm can be assigned to a certain output relays. The following options are possible:
Lifetime indicator: The dynamic lifetime indication allows an estimation, when the sensor (pH) or inner body (DO) or OptoCap is at the end of his lifetime, based on the actual stress he is exposed to. The sensor permanently takes the averaged stress of the past days into consideration and is able to increase / decrease the lifetime accordingly.
Lifetime Indicator YES / NO Alarm YES / NO R# choose relay
The following parameters affect the lifetime indicator:
Dynamic parameters: Static parameters:
– Temperature – Calibration history – pH or oxygen value – Zero and Slope – Glass impedance (only pH) – Phase 0 and Phase 100 (only optical DO) – Reference impedance (only pH) – Illumination time (only optical DO) – CIP / SIP / Autoclaving cycles
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The sensor keeps the information stored in the built in electronics and can be retrieved via a transmitter or the ISense asset management suite.
The alarm will be reseted if the Lifetime Indicator is not 0 days anymore (e.g. after connecting a new sensor or changes on the measurement conditions).
For amperometric Oxygen sensors, the lifetime indicator is related to the inner-body of the sensor. After exchanging the inner-body, reset the lifetime indicator in the ISM Setup menu (menu Configure).
For optical DO sensors the lifetime indicator is related to the OptoCap. After exchanging the OptoCap, reset the lifetime indicator in the ISM Setup menu (menu Configure).
If the Lifetime Indicator is turned on, the value will be automatically shown in the display on line 3.
Adaptive Cal Timer: This timer estimates when the next calibration should be performed to keep the best possible measurement performance. The timer is influenced by significant changes on the DLI parameters.
Adaptive Cal Timer YES / NO Alarm YES / NO R# choose relay
The alarm will be reseted after a successful calibration. If the Adaptive Cal Timer is turned on, the value will be automatically shown in the display on line 4.
NOTE: The recommended initial value for the calibration interval will be uploaded from the
C
NOTE: The recommended initial value for the maintenance interval will be uploaded from the
C
sensor to the transmitter and can be adapted according to the application experience (menu Configure / ISM Setup / Sensor monitoring).
Time to Maintenance (not for optical sensors): This timer estimates when the next cleaning cycle should be performed to keep the best possible measurement performance. The timer is influenced by significant changes on the DLI parameters.
Time to Maintenance YES / NO Alarm YES / NO R# choose relay
The alarm needs to be reseted in the menu ”ISM Setup”. For oxygen sensors, the time to maintenance indicates a maintenance cycle for the membrane and electrolyte.
sensor to the transmitter and can be adapted according to the application experience (menu Configure / ISM Setup / Sensor monitoring).

8.6.2 CIP Cycle Limit

Please activate the function ISM (see chapter 8.2.1) configuring the CIP cycle limit. The CIP cycle limit counts the number of CIP cycles if the limit (user defined) is reached, an alarm can be indicated and set to a certain output relays. The following options are possible:
CIP Max 000 Alarm YES / NO R# choose relay
If the Max setting is on 000, the counter functionality is turned off. The alarm will be reseted after exchanging the sensor. For oxygen sensors, the counter can be reseted in the ISM Setup menu (menu Configure)
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CIP characteristics: CIP Cycles will be automatically recognized by the sensor. Since CIP cycles
will vary in intensity (duration and temperature) for each application the algorithm of the counter recognizes an increase of the measurement temperature above a certain level (70 °C for CIP). If the temperature does not decrease below (60 °C for CIP) within the next 5 minutes after the first temperature was reached, the counter in question will be incremented by one and also locked for the next two hours. In the case the CIP would last longer than two hours the counter would be incremented by one once more.

8.6.3 SIP Cycle Limit

The SIP cycle limit counts the number of SIP cycles if the limit (user defined) is reached, an alarm can be indicated and set to a certain output relays. The following options are possible:
SIP Max 000
Alarm YES / NO R# choose relay
If the Max setting is on 000, the counter functionality is turned off. The alarm will be reseted after exchanging the sensor. For oxygen sensors, the counter can be reseted in the ISM Setup menu (menu Configure).
SIP characteristics: SIP Cycles will be automatically recognized by the sensor. Since SIP cycles
will vary in intensity (duration and temperature) for each application the algorithm of the counter recognizes an increase of the measurement temperature above a certain level (110 °C for SIP). If the temperature does not decrease below (100 °C for SIP) within the next 5 minutes after the first temperature was reached, the counter in question will be incremented by one and also locked for the next two hours. In the case the SIP would last longer than two hours the counter would be incremented by one once more.

8.6.4 Autoclaving Cycle Limit

The Autoclaving cycle limit counts the number of Autoclaving cycles if the limit (user defined) is reached, an alarm can be indicated and set to a certain output relays. The following options are possible:
Autoclave Max 000
Alarm YES / NO R# choose relay
If the Max setting is on 000, the counter functionality is turned off. The alarm will be reseted after exchanging the sensor. For oxygen sensors, the counter can be reseted in the ISM Setup menu (menu Configure).
Autoclave characteristics: Since during the Autoclaving cycle the sensor is not connected to the
transmitter, you will be asked after every Sensor connection, whether the sensor was autoclaved or not. According to your selection, the counter will be incremented or not.
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8.6.5 Reset ISM Counter / Timer

This menu allows reseting counter and timer functions which cannot be reseted automatically. The adaptive calibration timer will be reseted after a successful adjustment or calibration.
for pH sensors: Reset Maintenance Timer Yes / No After a manual maintenance cycle on the sensor, this timer needs to be reseted.
for oxygen sensors: Reset Maintenance Timer Yes / No After a manual maintenance cycle on the sensor, this timer needs to be reseted.
Reset Lifetime Indicator Yes / No After exchanging the inner-body of the sensor, this timer needs to be reseted.
Reset CIP counter Yes / No Reset SIP counter Yes / No Reset Autoclaving counter Yes / No After a manual maintenance cycle on the sensor, this timer needs to be reseted

8.7 Display

(PATH: Menu / Configure / Display)
Enter configuration mode as described in Section 8.1.
This Menu allows for the configuration of the values to be displayed and also the configuration of the Display itself.

8.7.1 Measurement

The Display has 4 lines. Line 1 on top and Line 4 on the bottom.
Select the values (Measurement a, b, c or d) to be displayed on each line of the display.
The selection of the values for a, b, c, d needs to be done under Configuration / Measurement / Channel Setup.
Select the ”Error Display” mode. If this is set to ”On” when an alarm has occurred, the message ”Failure – Press Enter” will be displayed on Line 4 when an alarm occurs in the normal Measurement mode.
Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will discard the entered values, selecting Yes will make the entered values the current ones.
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8.7.2 Resolution

This menu allows the setting of the resolution of each displayed value. The accuracy of the measurement is not effected by this setting.
Possible settings are 1, 0.1, 0.01, 0.001 or Auto.
Pressing the [ENTER] key will bring up the Save Changes dialog.

8.7.3 Backlight

This Menu allows the setting of the back light options of the display.
Possible settings are On, On 50% or Auto Off 50%. If Auto Off 50% is selected then the backlight will go to 50% after 4 minutes with no keypad activity. The backlight will automatically come back on if a key is pressed.
Pressing the [ENTER] key Will bring up the Save Changes dialog.

8.7.4 Name

This menu allows for the configuration of an alpha-numeric name which is displayed in the first 9 characters on Lines 3 and 4 of the Display. The default is nothing (blank).
If a name is entered on line 3 and / or 4 a measurement can be still displayed on the same line.
Use the and keys to navigate between digits to be altered. Using the and keys to change the character to be displayed. Once all digits of both display channels have been entered, press [ENTER] to bring up the Save Changes dialog.
The resulting display in the measurement mode appears on Lines 3 and 4 ahead of the measurements.
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8.7.5 ISM Sensor Monitoring
(available when ISM sensor connected)
The sensor monitoring allows you to display the sensor monitoring details on line 3 and 4 in the display. The following options are possible:
Line 3 Off / Time Indicator / Time to Maint / Adapt Cal Timer Line 4 Off / Time Indicator / Time to Maint / Adapt Cal Timer

8.8 Hold Analog Outputs

(PATH: Menu / Configure / Hold Outputs)
Enter configuration mode as described in Section 8.1.
The ”Hold outputs” function applies during the calibration process. If set ”Hold outputs” to Yes, during calibration process the analog output, the output relay and USB ouptut will be at hold state. The hold state depends on the setting. For the possible hold settings, see the list below. The following options are possible:
Hold Outputs? Yes / No
The ”DigitalIn” function applies all the time. As soon as a signal is active on the digital input the transmitter goes to hold mode and the values on the analog output, the output relays and the USB output will be at hold state.
DigitalIn1 / 2 State = On / Low / High
NOTE: DigitalIn1 is to hold channel A (conventional sensor)
C
Possible Hold states: Output relays: On / Off (Configuration / Set point) Analog Output: Last / Fixed (Configuration / Analog output) USB: Last / Off (System / USB) PID relay Last / Off (PID setup/Mode) PID analog Last / Off (PID setup/Mode)
DigitalIn2 is to hold channel B (ISM sensor)
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System
Set Language USB Passwords
Set/Clear
Lockout
Reset
Set
Date & Time

9 System

(PATH: Menu / System)
While in Measurement mode press the key. Press the or key to navigate to ”System” – Menu and press [ENTER].

9.1 Set Language

(PATH: Menu / System / Set Language)
This Menu allows the configuration of the Display language.
The following selections are possible: English, French, German, Italian, Spanish, Portuguese, Russian or Japanese (Katakana).
Pressing the [ENTER] key will bring up the Save Changes dialog.

9.2 USB

(PATH: Menu / System / USB)
This menu allows configuration of the USB hold function.
USB Hold may be set to either Off or Last Values. An external host device may poll the M400 for data. If the USB Hold is set to Off, current values are returned. If the USB Hold is set to Last Values, the values present at the time the hold condition was established are returned.
Press [ENTER] to bring up the Save Changes dialog.
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9.3 Passwords

(PATH: Menu / System / Passwords)
This Menu allows for the configuration of Operator and Administrator Passwords, as well as setting up a List of allowed Menus for the Operator. The Administrator has rights to access all Menus. All default passwords for new transmitters are ”00000”.
The Passwords Menu is protected: Enter the Administrator Password to enter the Menu.

9.3.1 Changing Passwords

See Section 9.3 on how to enter the Passwords Menu. Select Change Administrator or Change Operator and set the new Password.
Press the [ENTER] key and confirm the new password. Press [ENTER] again to bring up the Save Changed dialog.
9.3.2 Configuring Menu Access for Operator
See 9.3 on how to enter the Passwords Menu. Select Configure Operator to configure the Access list for the Operator. It is possible to assign / deny rights to the following Menus: Cal Key, Quick Setup, Configuration, System, PID Setup and Service.
Choose either Yes or No to give / deny access to the above Menus and press [ENTER] to advance to the next items. Pressing the [ENTER] key after configuring all menus will bring up the Save Changes dialog. Selecting No will discard the entered values, selecting Yes will make the entered values the current ones.
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9.4 Set / Clear Lockout

(PATH: Menu / System / Set / Clear Lockout)
This menu enables / disables the Lockout functionality of the transmitter. The user will be asked for a password before being allowed into any menus if the Lockout functionality is enabled.
The Lockout – Menu is protected: Enter the Administrator or Operator Password and select YES to enable or NO to disable the Lockout functionality. Pressing the [ENTER] key after the selection will bring up the Save Changes dialog. Selecting No will discard the entered value, selecting Yes will make the entered value the current one.

9.5 Reset

(PATH: Menu / System / Reset)
This Menu allows access to the following options: Reset System, Reset Meter Cal, Reset Analog Cal.

9.5.1 Reset System

This Menu allows the reset of the meter to the factory default settings (Setpoints off, analog outputs off, etc.). The meter calibration and the analog output calibration are not affected.
Pressing the [ENTER] key after the selection will bring up a confirmation screen. Selecting No will return the user to the Measurement mode with no changes. Selecting Yes will reset the meter.

9.5.2 Reset Meter Calibration

This Menu allows the reset of the meter’s calibration factors to the last factory calibration values.
Pressing the [ENTER] key after the selection will bring up a confirmation screen. Selecting No will return the user to the Measurement mode with no changes. Selecting Yes will reset the meter calibration factors.
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9.5.3 Reset Analog Calibration

This Menu allows reset of the Analog Output calibration factors to the last factory calibration values.
Pressing the [ENTER] key after the selection will bring up a confirmation screen. Selecting No will return the user to the Measurement mode with no changes. Selecting Yes will reset the Analog Output calibration.

9.6 Set Date & Time

Please enter the actual date and time. The following options are possible. This function is automatically activated at every power-up.
Date (YY-MM-DD): Time (HH:MM:SS):
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PID Setup
Tune
Parameters
ModePID A/M PID Display

10 PID Setup

(PATH: Menu / PID Setup)
PID control is proportional, integral and derivative control action that can provide smooth regulation of a process. Before configuring the transmitter, the following process characteristics must be identified.
Identify the control direction of the process
Conductivity: Dilution – direct acting where increasing measurement produces increasing control output
such as controlling the feed of low conductivity diluting water to rinse tanks, cooling towers or boilers
Concentrating – reverse acting where increasing measurement produces decreasing control
output, such as controlling chemical feed to attain a desired concentration
– Dissolved Oxygen:
Deaeration – direct acting where increasing DO concentration produces increasing control
output such as controlling the feed of a reducing agent to remove oxygen from boiler feedwater
Aeration – reverse acting where increasing DO concentration produces decreasing control
output, such as controlling an aerator blower speed to maintain a desired DO concentration in fermentation or wastewater treatment
– pH / ORP:
Acid feed only – direct acting where increasing pH produces increasing control output, also
for ORP reducing reagent feed
Base feed only – reverse acting where increasing pH produces decreasing control output,
also for ORP oxidizing reagent feed
Both acid and base feed – direct and reverse acting
Identify the control output type based on the control device to be used: Pulse Frequency – used with pulse input metering pump Pulse Length – used with solenoid valve Analog – used with current input device such as electric drive unit, analog input metering
pump or current-to-pneumatic (I / P) converter for pneumatic control valve
Default control settings provide linear control, which is appropriate for conductivity, dissolved oxygen. Therefore, when configuring PID for these parameters (or simple pH control) ignore settings of deadband and corner points in the Tuning Parameter section below. The non-linear control settings are used for more difficult pH / ORP control situations. If desired, identify the non-linearity of the pH / ORP process. Improved control can be obtained if the non-linearity is accommodated with an opposing non-linearity in the controller. A titration curve (graph of pH or ORP vs. reagent volume) made on a process sample provides the best information. There is often a very high process gain or sensitivity near the setpoint and decreasing gain further away from the setpoint. To counteract this, the instrument allows for adjustable non-linear control with settings of a deadband around the setpoint, corner points
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Controller with Corner Points
–120%
–100%
–80%
–60%
–40%
–20%
0%
20%
40%
60%
80%
100%
120%
0 2 4 6 8 10 12 14
Process Variable
Deadband - value
Proportional limit –100% value
Proportional limit +100% value
Y
P
Error (%)
Direct corner point (value, %)
Set point value
Deadband + value
Reverse corner point (value, %)
further out and proportional limits at the ends of control as shown in the figure below. Determine the appropriate settings for each of these control parameters based on the shape of the pH process titration curve.

10.1 Enter PID Setup

While in Measurement mode press the key. Press the or key to navigate to the PID Setup – Menu and press [ENTER].

10.2 PID Auto / Manual

(PATH: MENU / PID Setup / PID A / M)
This menu allows selection of Automatic or Manual operation. Select Auto or Manual operation. Pressing the [ENTER] key will bring up the Save Changes dialog.
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10.3 Mode

(PATH: MENU / PID Setup / Mode)
This menu contains the selection of control modes using relays or analog outputs. Press [ENTER].

10.3.1 PID Mode

This menu assigns a relay or analog output for PID control action as well as details of their operation. Based on the control device being used, select one of the following three paragraphs for use with solenoid valve, pulse input metering pump or analog control.
Pulse Length – If using a solenoid valve, select ”Relays” and ”PL”, Pulse Length. Choose the first relay position as #3 (recommended) and / or the second relay position as #4 (recommended) as well as the Pulse Length (PL) according to the table below. A longer pulse length will reduce wear on the solenoid valve. The % ”on” time in the cycle is proportional to the control output.
NOTE: All relays from #1 to #6 can be used for the controlling function.
C
Conductivity
pH / ORP
Dissolved Oxygen
1st Relay Position
(#3)
Controlling concentrating reagent feed
Feeding base Feeding acid
Reverse control action
2nd Relay Position
(#4)
Controlling dilution water
Direct acting control action
Pulse Length (PL)
Short (PL) provides more uniform feed. Suggested start point = 30 sec
Reagent addition cycle: short PL provides more uniform addition of reagent. Suggested start point = 10 sec
Feed cycle time: short PL provides more uniform feed. Suggested start point = 30 sec
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Pulse Frequency – If using a pulse input metering pump, select ”Relays” and ”PF”, Pulse Frequency. Choose the first relay position as #3 and / or the second relay position as #4 according to the table below. Set the pulse frequency to the maximum frequency allowed for the particular pump being used, typically 60 to 100 pulses / minute. Control action will produce this frequency at 100% output.
NOTE: All relays from #1 to #6 can be used for the controlling function.
C
CAUTION: Setting the Pulse Frequency too high may cause the pump to overheat.
1st Relay Position = #3 2nd Relay Position = #4 Pulse Frequency (PF)
Conductivity
pH / ORP
Dissolved Oxygen
Controlling concentrating chemical feed
Feeding base Feeding acid
Reverse control action
Controlling dilution water
Direct acting control action
Max allowed for the pump used (typically 60–100
Max allowed for the pump used (typically 60–100
Max allowed for the pump used (typically 60–100
Analog – If using Analog control, change ”Relays” to ”Analogout” using up / down arrow keys. Choose the first Analogout position as #1 and / or the second Analogout position as #2 according to the table below. Select the analog output current range required by the control device, 4–20 or 0–20 mA. Press [ENTER].
1st Analogout Position = #1 2nd Analogout Position = #2
Conductivity
pH / ORP Dissolved Oxygen Reverse control action Direct acting control action
Controlling concentrating chemical feed
Feeding base Feeding acid
Controlling dilution water

10.4 Tune Parameters

(PATH: MENU / PID Setup / Tune Parameters)
This menu assigns control to a measurement and sets the setpoint, tuning parameters and non­linear functions of the controller through a series of screens.

10.4.1 PID Assignment & Tuning

Assign the measurement, a, b, c, or d to be controlled after ”PID on_”. Set the Gain (unitless), Integral or Reset time Tr (minutes) and Rate or Derivative time Td (minutes) needed for control. Press [ENTER]. Gain, Reset and Rate are later adjusted by trial and error based on process response. Always begin with Td at zero.
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10.4.2 Setpoint & Deadband

Enter the desired setpoint value and the deadband around the setpoint, where no proportional control action will take place. Be sure to include the units multiplier µ or m for conductivity. Press [ENTER].

10.4.3 Proportional Limits

Enter the low and high proportional limits – the range over which control action is required. Be sure to include the units multiplier µ or m for conductivity. Press [ENTER].

10.4.4 Corner Points

Enter the low and high corner points in conductivity, pH, dissolved oxygen units and the respective output values from –1 to +1, shown in the figure as –100 to +100%. Press [ENTER].

10.5 PID Display

(PATH: Menu / PID Setup / PID Display Setup)
This screen enables display of PID control status in the normal measurement mode.
When PID Display is selected, the status (Man or Auto) and control output (%) will be displayed on the bottom line. If controlling pH, the reagent will also be displayed. In addition, for the display to be enabled, a measurement must be assigned under Tune Parameters and a relay or analog output must be assigned under Mode.
In Manual, the control output may be adjusted with the up and down arrow keys. (The ”Info” key function is not available in Manual.)
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Service
Tech Service
Calibrate Diagnostics

11 Service

(PATH: Menu / Service)
While in Measurement mode press the key. Press the or key to navigate to the ”Service” Menu and press [ENTER]. The available system configuration options are detailed below

11.1 Diagnostics

(PATH: Menu / Service / Diagnostics)
This Menu is a valuable tool for troubleshooting and provides diagnostic functionality for the following items: Model / Software Revision, Digital Input, Display, Keypad, Memory, Set Relays, Read Relays, Set Analog Outputs, Read Analog Outputs.

11.1.1 Model / Software Revision

Essential information for every Service call is the model and software revision number. This Menu shows the transmitter part number, serial number and software version number. Press [ENTER] to exit from this display.

11.1.2 Digital Input

The digital Input menu shows the state of the digital inputs. Press [ENTER] to exit from this display.
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11.1.3 Display

All pixels of the display will be lit for 15 seconds to allow troubleshooting of the display. After 15 seconds the transmitter will return to the normal Measuring mode or press [ENTER] to exit sooner.

11.1.4 Keypad

For keypad diagnostics, the display will indicate which key is pressed. Pressing [ENTER] will return the transmitter to the normal Measuring mode.

11.1.5 Memory

If Memory is selected then the transmitter will perform a RAM and ROM memory test. Test patterns will be written to and read from all RAM memory locations. The ROM checksum will be recalculated and compared to the value stored in the ROM.

11.1.6 Set Relay

The Set Relays diagnostic menu allows for the activation / deactivation of eachRelay. To access relays 5 and 6, press [ENTER].
0 = Normal (normally open contacts are open) 1 = Inverted (normally open contacts are closed)
Press [ENTER] to return to Measurement mode.
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11.1.7 Read Relays

The Read Relays diagnostic menu shows the state of each Relay as defined below. To display Relays 5 and 6, press [ENTER]. Press [ENTER] again to exit from this display.
0 = Normal 1 = Inverted.

11.1.8 Set Analog Outputs

This menu enables the user to set all analog outputs to any mA value within the 0–22 mA range. Press [ENTER] to exit from this display.

11.1.9 Read Analog Outputs

This menu shows the mA value of the analog Outputs. Press [ENTER] to exit from this display.
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11.2 Calibrate

(PATH: Menu / Service / Calibrate)
This menu has the options to calibrate the transmitter and the analog outputs and also allows the unlocking of calibration functionality.

11.2.1 Calibrate Meter (only for channel A)

The M400 transmitter is factory calibrated within specifications. It is not normally necessary to perform meter re-calibration unless extreme conditions cause an out of spec operation shown by Calibration Verification. Periodic verification / re-calibration may also be necessary to meet Q.A. requirements. Meter calibration can be selected as Current (used for most dissolved oxyge, Voltage, Rg Diagnostic, Rr Diagnostic (used for pH), and Temperature (used for all measurements).
11.2.1.1 Temperature
Temperature is performed as a three point calibration. The table above shows the resistance values of these three points. Navigate to the Calibrate Meter screen and choose Temperature calibration for Channel A.
Press [ENTER] to begin temperature calibration process
The first text line will ask for the Point 1 temperature resistance value (this will correspond to Temperature 1 value shown on the Calibration Module Accessory). The second text line will show the measured resistance value. When the value stabilizes, press [ENTER] to perform calibration.
The transmitter screen will then prompt the user to enter the value for Point 2, and T2 will display the measured resistance value. When this value stabilizes, press [ENTER] to calibrate this range.
Repeat these steps for Point 3.
Press [ENTER] to bring up a confirmation screen. Select Yes to save the calibration values and the successful Calibration is confirmed on the display.
The transmitter will return to the Measurement mode in approximately 5 seconds.
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11.2.1.2 Current
Current Calibration is preformed as a two point calibration. Navigate to the Calibrate Meter screen and select Channel A.
Enter the value for Point 1, in milliamps, of the current source connected to the input. The second display line will show the measured current. Press [ENTER] to begin the calibration process.
Enter the value for Point 2, in milliamps, of the current source connected to the input. The second display line shows the measured current.
Pressing the [ENTER] key after entering Point 2 will bring up a confirmation screen. Select Yes to save the calibration values and the successful Calibration is confirmed on the display. The transmitter will return to the Measurement mode in approximately 5 seconds.
11.2.1.3 Voltage
Voltage Calibration is preformed as a two point calibration. Navigate to the Calibrate Meter screen and select Channel A and Voltage.
Enter the value for Point 1 in, volts, connected to the input. The second display line will show the measured voltage. Press[ENTER] to begin the calibration process.
Enter the value for Point 2, in volts, of the source connected to the input. The second display line shows the measured voltage.
Pressing the [ENTER] key after entering Point 2 will bring up a confirmation screen. Select Yes to save the calibration values and the successful Calibration is confirmed on the display. The transmitter will return to the Measurement mode in approximately 5 seconds.
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11.2.1.4 Rg Diagnostic
Rg Diagnostic is performed as a two point calibration. Navigate to the Calibrate Meter screen and select Channel A and Rg Diagnostic.
Enter the value for Point 1 of the calibration according to the resistor connected across the pH glass electrode measuring input. Press [ENTER] to begin the calibration process.
Enter the value for Point 2 of the calibration according to the resistor connected across the pH glass electrode measuring input.
Pressing the [ENTER] key after entering Point 2 will bring up a confirmation screen. Select Yes to save the calibration values and the successful Calibration is confirmed on the display. The transmitter will return to the Measurement mode in approximately 5 seconds.
11.2.1.5 Rr Diagnostics
Rr Diagnostic is performed as a two point calibration. Navigate to the Calibrate Meter screen and select Channel A and Rr Diagnostic.
Enter the value for Point 1 of the calibration according to the resistor connected across the pH reference measuring input. Press [ENTER] to begin the calibration process.
Enter the value for Point 2 of the calibration according to the resistor connected across the pH reference measuring input.
Pressing the [ENTER] key after entering Point 2 will bring up a confirmation screen. Select Yes to save the calibration values and the successful Calibration is confirmed on the display. The transmitter will return to the Measurement mode in approximately 5 seconds.
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11.2.2 Calibrate Analog

Select the Analog Output you wish to calibrate. Each Analog output can be calibrated at 4 and 20 mA.
Connect an accurate milliamp meter to the Analog output terminals and then adjust the five digit number in the display until the milliamp meter reads 4.00 mA and repeat for 20.00 mA.
As the five digit number is increased the output current increases and as the number is decreased the output current decreases. Thus coarse changes in the output current can be made by changing the thousands or hundreds digits and fine changes can be made by changing the tens or ones digits.
Pressing the [ENTER] key after entering both values will bring up a confirmation screen. Selecting No will discard the entered values, selecting Yes will make the entered values the current ones.

11.2.3 Calibrate Unlock

Select this Menu to configure the CAL Menu, see Section 7.
Selecting Yes means that Meter and Analog Output calibration Menus will be selectable under the CAL Menu. Selecting No means that only the Sensor calibration is available under the CAL Menu. Press [ENTER] after the selection to display a confirmation screen.

11.3 Tech Service

(PATH: Menu / Tech Service)
Note: This Menu is for Mettler Toledo Service personnel use only.
C
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Info
Calibration
Data
Messages
Model/Software
Revision
ISM Sensor
Info*
ISM
Diagnostics*
* Only available in combination with ISM sensors

12 Info

(PATH: Info)
Pressing the key will display the Info Menu with the options Messages, Calibration Data and Model / Software Revision.

12.1 Messages

(PATH: Info / Messages)
The most recent message is displayed. The up and down arrow keys allow scrolling through the last four messages that have occurred.
Clear Messages clears all the messages. Messages are added to the message list when the condition that generates the message first occurs. If all messages are cleared and a message condition still exists and started before the clear then it will not appear in the list. For this message to re-occur in the list the condition must go away and then reappear.

12.2 Calibration Data

(PATH: Info / Calibration Data)
Selecting Calibration Data displays the calibration constants for each sensor. .
P = calibration constants for the primary measurement S = calibration constants for the secondary measurement
Press [ENTER] to exit from this display.
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12.3 Model / Software Revision

Selecting Model / Software Revision will display the model number, serial number and installed software revision.
The displayed information is important for any Service call. Press [ENTER] to return to the normal measurement mode.

12.4 ISM Sensor Info (available when ISM sensor connected)

After plugging in an ISM sensor, the following information about the sensor will be shown in this menu. Use up and down arrows to scroll in the menu.
Type: Type of sensor (e.g. InPro 3250)
Cal Date: Date of the last adjustment Serial-No.: Serial number of the connected Sensor Part-No.: Part number of the connected Sensor

12.5 ISM Sensor Diagnostics (available when ISM sensor connected)

Cal History
The calibration history is stored with a time stamp in the ISM Sensor and is displayed on the transmitter. The Calibration history offers the following information:
Fact (Factory calibration): This is the original dataset, determined in the factory. This dataset remains stored in the sensor for reference and cannot be overwritten.
Act (Actual adjustment): This is the actual calibration dataset which is used for the measurement. This dataset moves to Cal-2 position after the next adjustment.
1. Adj (First adjustment): This is the first adjustment after the factory calibration. This dataset
remains stored in the sensor for reference and cannot be overwritten
Cal-1 (last calibration / adjustment): This is the last executed calibration / adjustment. This dataset moves to Cal-2 and then to Cal-3 when a new calibration / adjustment is performed. Afterwards, the dataset is not available anymore.
Cal-2 and Cal-3 acting in the same way as Cal-1.
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Definition: Adjustment: The calibration procedure is completed and the calibration values are taken over and used for the measurement (Act) and stated in Cal-1. The current values from Act will move to Cal-2. Calibration: The calibration procedure is completed, but the calibration values will not be overtaken and the measurement continuous with the last valid adjustment dataset (Act). The dataset will be stored under Cal-1. The calibration history is used for the estimation of the lifetime indicator for ISM sensors.
Sensor Monitoring
The sensor monitoring shows the different diagnostics functions available for each ISM sensor. The following information is available:
Lifetime indicator: Shows an estimation of the remaining lifetime to ensure a reliable measure­ment. The lifetime is indicated in days (d) and percentage (%). For a description of the Lifetime indicator, please see section 8.6 ISM Setup. For Oxygen sensors, the lifetime indicator is related to the inner-body of the sensor or the OptoCap for optical sensors. If you want to bring the bar indicator on the screen, see chapter 8.7.5 to activate ISM functions.
Adaptive Cal Timer: This timer shows a Adaptive Cal Timer, when the next calibration should be performed to keep the best possible measurement performance. The Adaptive Cal Timer is indicated in days (d) and percentage (%). For a description of the Adaptive Cal Timer, please see section 8.6 ISM Setup.
Time to Maintenance: This timer shows a Time to Maintenance, when the next cleaning cycle should be performed to keep the best possible measurement performance. The Time to Maintenance is indicated in days (d) and percentage (%). For a description of the Time to Maintenance, please see section 8.6 ISM Setup. For oxygen sensors, the Time to Maintenance indicates a maintenance cycle for the membrane and electrolyte.
Max. Temperature
The maximum temperature shows the maximum temperature that this sensor has ever seen, together with a time stamp of this maximum. This value is stored on the sensor and cannot be changed. During autoclaving the Max temperature is not recorded.
Max. Temperature
Tmax XXX°C YY / MM / DD
CIP Cycles
Shows the amount of CIP cycles that the sensor has been exposed to. For a description of the CIP Cycle indicator, please see section 8.6 ISM Setup
CIP Cycles xxx of xxx
SIP Cycles
Shows the amount of SIP cycles that the sensor has been exposed to. For a description of the SIP Cycle indicator, please see section 8.6 ISM Setup
SIP Cycles xxx of xxx
Autoclaving Cycles
Shows the amount of Autoclaving cycles that the sensor has been exposed to. For a description of the AutoClave Cycle indicator, please see section 8.6 ISM Setup
Autoclaving Cycles xxx of xxx
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13 Maintenance

13.1 Front Panel Cleaning

Clean the front panel with a damp soft cloth (water only, no solvents). Gently wipe the surface and dry with a soft cloth.

14 Troubleshooting

If the equipment is used in a manner not specified by Mettler-Toledo Thornton, Inc., the protection provided by the equipment may be impaired.
Review the table below for possible causes of common problems:
Problem Possible Cause
– No power to M400.
Display is blank.
Incorrect measurement readings.
Measurement readings not stable.
Displayed is flashing. – Setpoint is in alarm condition (setpoint exceeded). Cannot change menu settings. – User locked out for security reasons.
– Blown fuse. – LCD display contrast set incorrectly. – Hardware failure.
– Sensor improperly installed. – Incorrect units multiplier entered. – Temperature compensation incorrectly set or
disabled. – Sensor or transmitter needs calibration. – Sensor or patch cord defective or exceeds
recommended maximum length. – Hardware failure.
– Sensors or cables installed too close to equipment
that generates high level of electrical noise. – Recommended cable length exceeded. – Averaging set too low. – Sensor or patch cord defective.
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14.1 Changing the Fuse

Make sure that the mains cable is unplugged before changing the fuse. This operation should only be carried out by personnel familiar with the transmitter and who are qualified for such work.
If the power consumption of the M400 transmitter is too high or a manipulation leads to a short circuit the fuse will blow. In this case remove the fuse and replace it with one specified in Section 15.

14.2 Warning- and Alarm list pH

Warnings Description Warning pH slope > 101% Slope too big Warning pH Slope < 95% Slope too small Warning pH Zero > 7.5 pH Zero offset too big Warning pH Zero < 6.5 pH Zero offset too small Warning pHGls change < 0.3 Glass electrode resitance changed by more than factor 0.3 Warning pHGls change > 3 Glass electrode resitance changed by more than factor 3 Warning pHRef change < 0.3 Reference electrode resitance changed by more than factor 0.3 Warning pHRef change > 3 Reference electrode resitance changed by more than factor 3
Alarms Description Watchdog time-out SW/System fault Error pH Slope > 102% Slope too big Error pH Slope < 90% Slope too small Error pH Zero > 8.0 pH Zero offset too big Error pH Zero < 6.0 pH Zero offset too small Error pH Ref Res >150 KΩ Reference electrode resistance too big (break) Error pH Ref Res < 2000 Ω Reference electrode resistance too small (short) Error pH Gls Res > 2000 MΩ Glass electrode resistance too big (break) Error pH Gls Res < 5 MΩ Glass electrode resistance too small (short)

14.3 Warning- and Alarm list O2

Warnings Description
Warning O2 Slope < –90nA Slope too big Warning O2 Slope > –35nA Slope too small Warning O2 ZeroPt > 0.3nA Zero offset too big Warning O2 ZeroPt < –0.3nA Zero offset too small
Alarms Description
Watchdog time-out SW/System fault Error O2 Slope < –110 nA Slope too big Error O2 Slope > –30 nA Slope too small Error O2 ZeroPt > 0.6 nA Zero offset too big Error O2 ZeroPt < –0.6 nA Zero offset too small
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14.4 Warning- and Alarm list Optical O2

Warnings Description
Chx Cal Required ATC = 0 Chx CIP Counter Expired Limit of CIP cycles reached Chx SIP Counter Expired Limit of SIP cycles reached Chx Autocl. Count. Exp. Limit of autoclaving cycles reached
Alarms Description
Chx Change Spot Replace OptoCap Chx Signal error Signal or Temperature out of spec
Chx Shaft error
Chx Hardware error Electronical componants fail
Temperature bad, stray light too high (Glass fiber broken), shaft removed
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15 Accessories and Spare Parts

Please contact your local Mettler-Toledo Sales office or representative for details for additional accessories and spare parts.
Description Order no.
Pipe Mount Kit for ½ DIN models 52 500 212 Panel Mount Kit for ½ DIN models 52 500 213 Protective Hood for ½ DIN models 52 500 214
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16 Specifications
16.1 General specifications
Conductivity / resistivity Specifications
0.01 cm–1 constant sensor 0.002 to 200 µS / cm
0.1 cm–1 constant sensor 0.02 to 2000 µS / cm 10 cm–1 constant sensor 10 to 40,000 µS / cm 4-electrode sensor 0.01 to 650 mS / cm
Chemical concentration curves
Temperature input PT1000 / PT100 Temperature measuring range – 40 to + 200.0 °C (–40 to 392 °F) Sensor maximum distance 61 m (200 ft); 15 m (50 ft with 4-E sensors)
Cond / Res accuracy
Repeatability
Resolution auto / 0.001 / 0.01 / 0.1 / 1 (can be selected) Temperature resolution 0.1 °C ( 0.1 °F), (can be selected) Temperature relative accuracy ± 0.25 °C (± 0.45 °F) Temperature repeatability ± 0.13 °C (± 0.23 °F) Ratings / Approvals
pH Specifications
pH range –1.00 to 15.00 pH pH Resolution auto / 0.01 / 0.1 / 1 (can be selected) pH Relative accuracy ± 0.03 pH mV range –1500 to 1500 mV mV Resolution 1 mv mV Relative accuracy ± 2 mV Temperature input Pt1000 / Pt100 / NTC22K Temperature measuring range –30 to 130 °C (22 to 266 °F)
Available Buffer Sets:
MT-9 buffers, MT-10 buffers, NIST Technical Buffers, NIST Standard Buffers (DIN 19266:2000–01), JIS Standard, Hach buffers, CIBA (94) buffers, Merck Titrisols-Reidel Fixanals, WTW buffers
Dissolved Oxygen Specifications
Measuring current (Air) at 25 °C (77 °F), 1 bar (14.5 psi)
Concentration range 0.1ppb (µg/L) to 20.00ppm (mg/L) Relative Accuracy ± 0.5% of full scale reading Resolution 30 pA Temperature input NTC 22 kΩ / Pt1000 Temperature measuring range –10 to 80 °C (14 to 176 °F)
HCl (0.01–15%), H2SO4 (0–25%), NaOH (0.01–13%), H3PO4 (0–35%)
± 0.5% of reading or 0.25Ω , whichever is greater, Up to 10 M-cm
+ / – 0.25% of reading or 0.25 ohm, whichever is greater
UL Listed, CE Compliant
ppm: 25 nA to 130 nA / ppb: 200 nA to 550 nA traces: 1500 nA to 6500 nA
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16.2 Electrical specifications
Power requirements
Frequency 50 to 60 Hz
Analog output signals
Measurement Error through analog outputs
Analog output configuration Linear, Bi-Linear, Logarithmic, Autoranging Load max. 500 Connection terminals Detachable screw terminals Digital communication USB port, Type B connector PID process controller Pulse length, pulse frequency or analog control Connection terminals Detachable screw terminals Digital Input 2 Mains power fuse 1.0 A slow blow type FC
Relays
Alarm Relay delay 0–999 s Keypad 5 tactile feedback keys Display four-line Max. cable length ISM 80 m
100 to 240 V AC or 20 to 30 V DC, 10 VA,
AWG 14 <2.5 mm
Four 0 / 4 to 20 mA outputs, galvanically isolated
from input and from earth / ground
< + / – 0.05 mA over 1 to 20 mA range,
< + / – 0.1 mA over 0 to 1 mA range
2-SPDT mechanical 250VAC, 30 VDC,3 Amps
2-SPST mechanical rated at 250VAC, 3 Amps
2-Reed 250VAC or DC, 0.5 A
2
NOTE: This is a 4-wire-product with an active 4–20 mA analog output.
C
Please do not supply to Pin1–Pin6 of TB2.
16.3 Mechanical specifications
Dimensions (housing – H x W x D)* 144 x 144 x 116 mm Front bezel – H x W 150 x 150 mm Max. D – panel mounted 87 mm (excludes plug-in connectors) Weight 0.95 kg (2 lb) Material ABS / polycarbonate Ingress rating IP 65 only when back cover is attached
* H=Height, W=Width, D=Depth
16.4 Environmental specifications
Storage temperature –40 to 70 °C (–40 to 158 °F) Ambient temperature operating range –10 to 50 °C (14 to 122 °F) Relative humidity 0 to 95% non-condensing Emissions According to EN55011 Class A
Hazardous areas FM: cFMus Class I Division 2 (pending) /
Atex: ATEX Zone 2 (pending)
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17 Default tables

17.1 General

Alarm Relay 2
Diagnostics off Power Failure off Software Failure off Delay 1 sec Hysteresis 0 State inverted
Clean Relay 1
Interval 0 Hrs Clean Time 0 Sec State normal Delay 0
Hysteresis 0 Language English Passwords Administrator 00000
Operator 00000 All Relays (unless otherwise specified) Delay 10 Sec
Hysteresis 5 %
State normal
Hold mode Last Lockout (on / off) no = off Channel A Measurement a Resistivity pH -cm
Measurement b temperature °C Channel B Measurement c Resistivity pH -cm
Measurement d Temperature °C Cal constants Cond / Res M=0.1, A=0.0
Dissolved Oxygen M=1.0, A=0.0
pH M=1.0, A=0.0
Temperature M=1.0, A=0.0 Analog Out 1 a – Cond / Resistivity M-cm
2 b – temperature °C
3 c – Cond / Resistivity M-cm
4 d – Temperature °C All analog out Mode 4 – 20 mA
Type normal
Alarm off
Hold mode last value Conductivity / Resistivity
Dissolved Oxygen Value 4 mA 0.000 ppb
pH Value 4 mA 2.000 pH
Temperature Value 4 mA 0 °C
Set point 1 Measurement a
Relay 3 Set Point 1 Set point 2 Measurement c
Relay 4 Set Point 2 Resolution Temperature 0.1 °C
Value 4 mA 10 M-cm
Value 20 mA 20 M-cm
Value 20 mA 100.0 ppb
Value 20 mA 12.00 pH
Value 20 mA 100 °C
Type Off
Value 0
Type Off
Value 0
Cond / Res
0.01 -cm
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17.2 M400

Parameter Sub parameter Value Unit
Alarm relay 2
diagnostics No Cond cell No power failure No software failure No Disconnect ChB No DLI monitor No CIP cycle counter No SIP cycle counter No
Autoclave cycle c. cycle counter
delay 1 sec hysteresis 0 state inverted
Clean relay 1
hold mode Hold Interval 0 Hrs clean time 0 Sec state normal delay 0
hysteresis 0 Language English Passwords administrator 00000
operator 00000 Analog Out 1 a –
2 b
3
4
All Relays(Unless Otherwise Specified)
delay 10 sec
hysteresis 5 %
state normal
hold mode Last Lockout Yes/No No
Cond/Res M=0.1, A=0.0
O
2
Cal constants (Analog sensor)
No
S= –70.00 nA, Z= 0.00 nA (O2 high)
S= –350.00 nA, Z= 0.00 nA (O2 low)
pH
S= 100.0%, Z= 7.000 pH
temperature M= 1.0, A= 0.0
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Parameter Sub parameter Value Unit
Analog Out 1 a
2 b
All analog out mode 4–20 mA
type normal
alarm off
hold mode last value
Conductivity/ Resistivity
value 4 mA 10 M-cm
Value 20 mA 20 M-cm O
2
value 4 mA 0 %sat
Value 20 mA 100 %sat pH value 4 mA 2 pH
Value 20 mA 12 pH Temperature value 4 mA 0 °C
Value 20 mA 100 °C Set point 1 measurement a
type off
value 0 Relay 3 set point 1 Set point 2 measurement b
type off
value 0 Relay 4 set point 2
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17.3 Error messages

ISM
ChX Disconnected
Chx Change Sensor
Chx Maint Required
Chx Cal Required
Chx CIP Counter Expired
Chx SIP Counter Expired
Chx AutCl Count Expired
pH – Warnings
Warning pH slope > 102%
Warning pH Slope < 90%
Warning pH Zero >7.5 pH
Warning pH Zero < 6.5 pH
Warning pHGls change < 0.3
Warning pHGls change > 3
Warning pHRef change < 0.3
Warning pHRef change > 3
pH – Alarms
Watchdog time-out
Error pH Slope > 103%
Error pH Slope < 80%
Error pH Zero > 8.0 pH
Error pH Zero < 6.0 pH
Error pH Ref Res >150 K
Error pH Ref Res < 2000
Error pH Gls Res > 2000 M
Error pH Gls Res < 5 M
O2 low – Warnings
Warnings
Warning DO Slope < –460 nA
Warning DO Slope > –250 nA
Warning DO ZeroPt > 0.5 nA
Warning DO ZeroPt < -0.5 nA
O2 low – Alarms
Watchdog time-out
Error Install O2 Jumper
Error DO Slope < –525 nA
Error DO Slope > –220 nA
Error DO ZeroPt > 1.0 nA
Error DO ZeroPt < –1.0 nA
Conductivity – Alarms
Alarms
Watchdog time-out
Cond Cell open
Cond Cell shorted
O2 high – Warnings
Warning DO Slope < –90 nA
Warning DO Slope > –35 nA
Warning DO ZeroPt > 0.3 nA
Warning DO ZeroPt < –0.3 nA
O2 high – Alarms
Watchdog time-out
Error DO Slope < –110 nA
Error DO Slope > –30 nA
Error DO ZeroPt > 0.6 nA
Error DO ZeroPt < –0.6 nA
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18 Warranty

METTLER TOLEDO warrants this product to be free from significant deviations in material and workmanship for a period of one year from the date of purchase. If repair is necessary and not the result of abuse or misuse within the warranty period, please return by freight pre-paid and amendment will be made without any charge. METTLER TOLEDO’s Customer Service Dept. will determine if the product problem is due to deviations or customer abuse. Out-of-warranty products will be repaired on an exchange basis at cost.
The above warranty is the only warranty made by METTLER TOLEDO and is lieu of all other warranties, expressed or implied, including, without limitation, implied warranties of merchantability and fitness for a particular purpose. METTLER TOLEDO shall not be liable for any loss, claim, expense or damage caused by, contributed to or arising out of the acts or omissions of the Buyer or Third Parties, whether negligent or otherwise. In no event shall METTLER TOLEDO’s liability for any cause of action whatsoever exceed the cost of the item giving rise to the claim, whether based in contract, warranty, indemnity, or tort (including negligence).
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19 Buffer tables

M400 transmitters have the ability to do automatic pH buffer recognition. The following tables show different standard buffers that are automatically recognized.

19.1 Mettler-9

Temp (°C) 0 2.03 4.01 7.12 9.52 5 2.02 4.01 7.09 9.45 10 2.01 4.00 7.06 9.38 15 2.00 4.00 7.04 9.32 20 2.00 4.00 7.02 9.26 25 2.00 4.01 7.00 9.21 30 1.99 4.01 6.99 9.16 35 1.99 4.02 6.98 9.11 40 1.98 4.03 6.97 9.06 45 1.98 4.04 6.97 9.03 50 1.98 4.06 6.97 8.99 55 1.98 4.08 6.98 8.96 60 1.98 4.10 6.98 8.93 65 1.99 4.13 6.99 8.90 70 1.99 4.16 7.00 8.88 75 2.00 4.19 7.02 8.85 80 2.00 4.22 7.04 8.83 85 2.00 4.26 7.06 8.81 90 2.00 4.30 7.09 8.79 95 2.00 4.35 7.12 8.77
pH of buffer solutions

19.2 Mettler-10

Temp (°C) 0 2.03 4.01 7.12 10.32 5 2.02 4.01 7.09 10.25 10 2.01 4.00 7.06 10.18 15 2.00 4.00 7.04 10.12 20 2.00 4.00 7.02 10.06 25 2.00 4.01 7.00 10.01 30 1.99 4.01 6.99 9.97 35 1.99 4.02 6.98 9.93 40 1.98 4.03 6.97 9.89 45 1.98 4.04 6.97 9.86 50 1.98 4.06 6.97 9.83 55 1.98 4.08 6.98 9.83 60 1.98 4.10 6.98 9.83 65 1.99 4.13 6.99 9.83 70 1.99 4.16 7.00 9.83 75 2.00 4.19 7.02 9.83 80 2.00 4.22 7.04 9.83 85 2.00 4.26 7.06 9.83 90 2.00 4.30 7.09 9.83 95 2.00 4.35 7.12 9.83
pH of buffer solutions
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19.3 NIST Technical Buffers

Temp (°C) 0 1.67 4.00 7.115 10.32 13.42 5 1.67 4.00 7.085 10.25 13.21 10 1.67 4.00 7.06 10.18 13.01 15 1.67 4.00 7.04 10.12 12.80 20 1.675 4.00 7.015 10.06 12.64 25 1.68 4.005 7.00 10.01 12.46 30 1.68 4.015 6.985 9.97 12.30 35 1.69 4.025 6.98 9.93 12.13 40 1.69 4.03 6.975 9.89 11.99 45 1.70 4.045 6.975 9.86 11.84 50 1.705 4.06 6.97 9.83 11.71 55 1.715 4.075 6.97 9.83* 11.57 60 1.72 4.085 6.97 9.83* 11.45 65 1.73 4.10 6.98 9.83* 11.45* 70 1.74 4.13 6.99 9.83* 11.45* 75 1.75 4.14 7.01 9.83* 11.45* 80 1.765 4.16 7.03 9.83* 11.45* 85 1.78 4.18 7.05 9.83* 11.45* 90 1.79 4.21 7.08 9.83* 11.45* 95 1.805 4.23 7.11 9.83* 11.45*
*Extrapolated
pH of buffer solutions

19.4 NIST standard buffers (DIN and JIS 19266: 2000–01)

Temp (°C) 0 5 1.668 4.004 6.950 9.392 10 1.670 4.001 6.922 9.331 15 1.672 4.001 6.900 9.277 20 1.676 4.003 6.880 9.228 25 1.680 4.008 6.865 9.184 30 1.685 4.015 6.853 9.144 35 1.694 4.028 6.841 9.095 40 1.697 4.036 6.837 9.076 45 1.704 4.049 6.834 9.046 50 1.712 4.064 6.833 9.018 55 1.715 4.075 6.834 8.985 60 1.723 4.091 6.836 8.962 70 1.743 4.126 6.845 8.921 80 1.766 4.164 6.859 8.885 90 1.792 4.205 6.877 8.850 95 1.806 4.227 6.886 8.833
NOTE: The pH(S) values of the individual charges of the secondary reference materials are
C
documented in a certificate of an accredited laboratory. This certificate is supplied with the respective buffer materials. Only these pH(S) values shall be used as standard values for the secondary reference buffer materials. Correspondingly, this standard does not include a table with standard pH values for practical use. The table above only provides examples of pH(PS) values for orientation.
pH of buffer solutions
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19.5 Hach buffers

Buffer values up to 60 °C as specified by Bergmann & Beving Process AB.
Temp (°C)
pH of buffer solutions
0 4.00 7.14 10.30 5 4.00 7.10 10.23 10 4.00 7.04 10.11 15 4.00 7.04 10.11 20 4.00 7.02 10.05 25 4.01 7.00 10.00 30 4.01 6.99 9.96 35 4.02 6.98 9.92 40 4.03 6.98 9.88 45 4.05 6.98 9.85 50 4.06 6.98 9.82 55 4.07 6.98 9.79 60 4.09 6.99 9.76 65 4.09* 6.99* 9.76* 70 4.09* 6.99* 9.76* 75 4.09* 6.99* 9.76* 80 4.09* 6.99* 9.76* 85 4.09* 6.99* 9.76* 90 4.09* 6.99* 9.76* 95 4.09* 6.99* 9.76*
*Values complemented

19.6 Ciba (94) buffers

Temp (°C) 0 2.04 4.00 7.10 10.30 5 2.09 4.02 7.08 10.21 10 2.07 4.00 7.05 10.14 15 2.08 4.00 7.02 10.06 20 2.09 4.01 6.98 9.99 25 2.08 4.02 6.98 9.95 30 2.06 4.00 6.96 9.89 35 2.06 4.01 6.95 9.85 40 2.07 4.02 6.94 9.81 45 2.06 4.03 6.93 9.77 50 2.06 4.04 6.93 9.73 55 2.05 4.05 6.91 9.68 60 2.08 4.10 6.93 9.66 65 2.07* 4.10* 6.92* 9.61* 70 2.07 4.11 6.92 9.57 75 2.04* 4.13* 6.92* 9.54* 80 2.02 4.15 6.93 9.52 85 2.03* 4.17* 6.95* 9.47* 90 2.04 4.20 6.97 9.43 95 2.05* 4.22* 6.99* 9.38*
pH of buffer solutions
*Extrapolated
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19.7 Merck Titrisole, Riedel-de-Haën Fixanale

Temp (°C)
pH of buffer solutions
0 2.01 4.05 7.13 9.24 12.58 5 2.01 4.05 7.07 9.16 12.41 10 2.01 4.02 7.05 9.11 12.26 15 2.00 4.01 7.02 9.05 12.10 20 2.00 4.00 7.00 9.00 12.00 25 2.00 4.01 6.98 8.95 11.88 30 2.00 4.01 6.98 8.91 11.72 35 2.00 4.01 6.96 8.88 11.67 40 2.00 4.01 6.95 8.85 11.54 45 2.00 4.01 6.95 8.82 11.44 50 2.00 4.00 6.95 8.79 11.33 55 2.00 4.00 6.95 8.76 11.19 60 2.00 4.00 6.96 8.73 11.04 65 2.00 4.00 6.96 8.72 10.97 70 2.01 4.00 6.96 8.70 10.90 75 2.01 4.00 6.96 8.68 10.80 80 2.01 4.00 6.97 8.66 10.70 85 2.01 4.00 6.98 8.65 10.59 90 2.01 4.00 7.00 8.64 10.48 95 2.01 4.00 7.02 8.64 10.37

19.8 WTW buffers

Temp (°C) 0 2.03 4.01 7.12 10.65 5 2.02 4.01 7.09 10.52 10 2.01 4.00 7.06 10.39 15 2.00 4.00 7.04 10.26 20 2.00 4.00 7.02 10.13 25 2.00 4.01 7.00 10.00 30 1.99 4.01 6.99 9.87 35 1.99 4.02 6.98 9.74 40 1.98 4.03 6.97 9.61 45 1.98 4.04 6.97 9.48 50 1.98 4.06 6.97 9.35 55 1.98 4.08 6.98 60 1.98 4.10 6.98 65 1.99 4.13 6.99 70 2.00 4.16 7.00 75 2.00 4.19 7.02 80 2.00 4.22 7.04 85 2.00 4.26 7.06 90 2.00 4.30 7.09 95 2.00 4.35 7.12
pH of buffer solutions
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Notes:
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Notes:
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Page 88
www.mt.com/pro

METTLER TOLEDO Market Organizations

Management System certified according to
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certified
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ISO
Sales and Service:
Australia
Mettler-Toledo Ltd. 220 Turner Street Port Melbourne AUS- 3207 Melbourne / VIC Phone +61 1300 659 761 Fax +61 3 9645 3935 e-mail info.mtaus@mt.com
Austria
Mettler-Toledo Ges.m.b.H. Südrandstraße 17 A-1230 Wien Phone +43 1 607 43 56 Fax +43 1 604 28 80 e-mail infoprocess.mtat@mt.com
Brazil
Mettler-Toledo Ind. e Com. Ltda. Alameda Araguaia, 451 Alphaville BR- 06455-000 Barueri / SP Phone +55 11 4166 7444 Fax +55 11 4166 7401 e-mail mettler@mettler.com.br
service@mettler.com.br
China
Mettler-Toledo Instruments (Shanghai) Co. Ltd. 589 Gui Ping Road Cao He Jing CN- 200233 Shanghai Phone +86 21 64 85 04 35 Fax +86 21 64 85 33 51 e-mail mtcs@public.sta.net.cn
Croatia
Mettler-Toledo d.o.o. Mandlova 3 HR-10000 Zagreb Phone +385 1 292 06 33 Fax +385 1 295 81 40 e-mail mt.zagreb@mt.com
Czech Republic
Mettler-Toledo s.r.o. Trebohosticka 2283/2 CZ-100 00 Praha 10 Phone +420 2 72 123 150 Fax +420 2 72 123 170 e-mail sales.mtcz@mt.com
Denmark
Mettler-Toledo A/S Naverland 8 DK- 2600 Glostrup Phone +45 43 27 08 00 Fax +45 43 27 08 28
e-mail info.mtdk@mt.com
France
Mettler-Toledo Analyse Industrielle S.A.S. 30, Boulevard de Douaumont BP 949 F- 75829 Paris Cedex 17 Phone +33 1 47 37 06 00 Fax +33 1 47 37 46 26 e-mail mtpro-f@mt.com
Germany
Mettler-Toledo GmbH Prozeßanalytik Ockerweg 3 D- 35396 Gießen Phone +49 641 507 333 Fax +49 641 507 397 e-mail prozess@mt.com
Great Britain
Mettler-Toledo LTD 64 Boston Road, Beaumont Leys GB- Leicester LE4 1AW Phone +44 116 235 7070 Fax +44 116 236 5500 e-mail enquire.mtuk@mt.com
Hungary
Mettler-Toledo Kereskedelmi KFT Teve u. 41 HU-1139 Budapest Phone +36 1 288 40 40 Fax +36 1 288 40 50 e-mail mthu@t-online.hu
India
Mettler-Toledo India Private Limited Amar Hill, Saki Vihar Road Powai IN- 400 072 Mumbai Phone +91 22 2803 1111 Fax +91 22 2857 5071 e-mail sales.mtin@mt.com
Italy
Mettler-Toledo S.p.A. Via Vialba 42 I- 20026 Novate Milanese Phone +39 02 333 321 Fax +39 02 356 2973 e-mail customercare.italia@mt.com
Japan
Mettler-Toledo K.K. Process Division 4F Izumikan Sanbancho Bldg. 3-8 Sanbancho Chiyoda-ku JP-102-0075 Tokyo Tel. +81 3 3222 7103 Fax +81 3 3222 7118 e-mail helpdesk.ing.jp@mt.com
Malaysia
Mettler-Toledo (M) Sdn Bhd Bangunan Electroscon Holding, U 1-01 Lot 8 Jalan Astaka U8/ 84 Seksyen U8, Bukit Jelutong MY- 40150 Shah Alam Selangor Phone +60 3 78 44 58 88 Fax +60 3 78 45 87 73 e-mail MT-MY.CustomerSupport@mt.com
Mexico
Mettler-Toledo S.A. de C.V. Pino No. 350, Col. Sta. MA. Insurgentes, Col Atlampa MX- 06430 México D.F. Phone +52 55 55 47 57 00 Fax +52 55 55 41 22 28 e-mail mt.mexico@mt.com
Poland
Mettler-Toledo (Poland) Sp.z.o.o. ul. Poleczki 21 PL- 02-822 Warszawa Phone +48 22 545 06 80 Fax +48 22 545 06 88 e-mail polska@mt.com
Russia
Mettler-Toledo Vostok ZAO Sretenskij Bulvar 6/1 Office 6 RU-101000 Moscow Phone +7 495 651 98 86 Fax +7 495 621 63 53
+7 495 621 78 68
e-mail inforus@mt.com
Singapore
Mettler-Toledo (S) Pte. Ltd. Block 28 Ayer Rajah Crescent #05-01 SG-139959 Singapore Phone +65 6890 00 11 Fax +65 6890 00 12
+65 6890 00 13
e-mail precision@mt.com
Slovakia
Mettler-Toledo s.r.o. Hattalova 12/A SK- 831 03 Bratislava Phone +421 2 4444 12 20-2 Fax +421 2 4444 12 23 e-mail predaj@mt.com
Slovenia
Mettler-Toledo d.o.o. Peske 12 SI-1236 Trzin Phone +386 1 530 80 50 Fax +386 1 562 17 89 e-mail keith.racman@mt.com
South Korea
Mettler-Toledo (Korea) Ltd. Yeil Building 1 & 2 F 124-5, YangJe-Dong SeCho-Ku KR-137-130 Seoul Phone +82 2 3498 3500 Fax +82 2 3498 3555 e-mail Sales_MTKR@mt.com
Spain
Mettler-Toledo S.A.E. C/ Miguel Hernández, 69-71 ES- 08908 L’Hospitalet de Llobregat (Barcelona) Phone +34 93 223 76 00 Fax +34 93 223 76 01 e-mail bcn.centralita@mt.com
Sweden
Mettler-Toledo AB Virkesvägen 10 Box 92161 SE-12008 Stockholm Phone +46 8 702 50 00 Fax +46 8 642 45 62 e-mail info.se@mt.com
Switzerland
Mettler-Toledo (Schweiz) GmbH Im Langacher Postfach CH- 8606 Greifensee Phone +41 44 944 45 45 Fax +41 44 944 45 10 e-mail salesola.ch@mt.com
Thailand
Mettler-Toledo (Thailand) Ltd. 272 Soi Soonvijai 4 Rama 9 Rd., Bangkapi Huay Kwang TH-10320 Bangkok Phone +66 2 723 03 00 Fax +66 2 719 64 79 e-mail MT-TH.CustomerSupport@mt.com
USA/ Canada
Mettler-Toledo Ingold, Inc. 36 Middlesex Turnpike Bedford, MA 01730, USA Phone +1 781 301 8800 Toll free +1 800 352 8763 Fax +1 781 271 0681 e-mail mtprous@mt.com
ingold@mt.com
Subject to technical changes. © Mettler-Toledo AG, Process Analytics 11 / 08 Printed in Switzerland. 52 121 378
Mettler-Toledo AG, Process Analytics Im Hackacker 15, CH-8902 Urdorf, Switzerland Tel. +41 44 729 62 11, Fax +41 44 729 66 36
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