Mettler Toledo M400/2(X)H, M400G/2XH, M400/2H Operation Manual

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Operation Manual Multi-parameter Transmitter M400/2(X)H, M400G/2XH

Transmitter Multiparameter M400/2(X)H, M400G/2XH 30 031 683

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Transmitter M400/2(X)H, M400G/2XH 3

Operation Manual Multi-parameter Transmitter M400/2(X)H, M400G/2XH

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Transmitter M400/2(X)H, M400G/2XH 4

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Transmitter M400/2(X)H, M400G/2XH 5

Content

1 Introduction ___________________________________________________________________________________________ 9

2 Safety instructions _____________________________________________________________________________________ 10

2.1 Denition of equipment and documentation symbols and designations _______________________________________10

2.2 Correct disposal of the unit ________________________________________________________________________ 11

3 Unit overview _________________________________________________________________________________________ 12

3.1 Overview 1/2DIN _________________________________________________________________________________ 12

3.2 Control / Navigation Keys ___________________________________________________________________________ 13

3.2.1 Menu Structure ___________________________________________________________________________ 13

3.2.2 Navigation keys __________________________________________________________________________ 13

3.2.2.1 Navigating the menu tree _________________________________________________________ 13

3.2.2.2 Escape _______________________________________________________________________ 14

3.2.2.3 ENTER ________________________________________________________________________ 14

3.2.2.4 Menu _________________________________________________________________________ 14

3.2.2.5 Calibration mode _______________________________________________________________ 14

3.2.2.6 Info mode _____________________________________________________________________ 14

3.2.3 Navigation of data entry elds _______________________________________________________________14

3.2.4 Entry of data values, selection of data entry options ______________________________________________ 14

3.2.5 Navigation with u in Display ________________________________________________________________ 15

3.2.6 ”Save changes” dialog _____________________________________________________________________ 15

3.2.7 Security Passwords _______________________________________________________________________ 15

3.2.8 Display ________________________________________________________________________________15

4 Installation instruction __________________________________________________________________________________ 16

4.1 Unpacking and inspection of equipment _______________________________________________________________ 16

4.1.1 Panel cutout dimensional information – 1/2DIN models ___________________________________________ 16

4.1.2 Installation procedure _____________________________________________________________________17

4.1.3 Assembly – 1/2DIN version _________________________________________________________________ 17

4.1.4 1/2DIN version – Dimension drawings ________________________________________________________ 18

4.1.5 1/2DIN version – Pipe mounting _____________________________________________________________ 18

4.2 Connection of power supply ________________________________________________________________________ 19

4.2.1 Housing (wall mount) _____________________________________________________________________ 19

4.3 Connector PIN denition ___________________________________________________________________________ 20

4.3.1 Terminal Block (TB) Denitions ______________________________________________________________ 20

4.3.2 TB2 Conductivity 4-E/2-E Analog Sensors ______________________________________________________ 21

4.3.3 Analog Sensors __________________________________________________________________________ 21

4.3.4 TB2 Analog Oxygen Sensors ________________________________________________________________ 22

4.3.5 TB2 – ISM (Digital) Sensors ________________________________________________________________ 22

4.4 Connection of ISM (digital) sensors __________________________________________________________________ 23

4.4.1 Connection of ISM sensors for pH/ORP, Cond 4-e and amperometric oxygen measurement ________________ 23

4.4.2 TB2 – AK9 cable assignment _______________________________________________________________ 23

4.5 Connection of analog sensors ______________________________________________________________________24

4.5.1 Connection of analog sensor for pH / ORP ______________________________________________________ 24

4.5.2 TB2 – Typical wiring for analog pH/ORP sensor _________________________________________________ 25

4.5.2.1 Example 1 ____________________________________________________________________ 25

4.5.2.2 Example 2 ____________________________________________________________________ 26

4.5.2.3 Example 3 ____________________________________________________________________ 27

4.5.2.4 Example 4 ____________________________________________________________________ 28

4.5.3 Connection of analog sensor for amperometric oxygen measurement ________________________________29

4.5.4 TB2 – Typical wiring for analog sensor for Amperometric oxygen measurement _________________________ 30

5 Placing transmitter in, or out, of service ___________________________________________________________________ 31

5.1 Placing transmitter in service _______________________________________________________________________ 31

5.2 Placing transmitter out of service ____________________________________________________________________ 31

6 Quick Setup __________________________________________________________________________________________ 32

7 Sensor Calibration _____________________________________________________________________________________ 33

7.1 Enter Calibration Mode ____________________________________________________________________________ 33

7.2 Conductivity calibration for two- or four-electrode sensors _________________________________________________ 34

7.2.1 One-point sensor calibration ________________________________________________________________ 34

7.2.2 Two-point sensor calibration (four electrode sensors only) _________________________________________ 35

7.2.3 Process Calibration _______________________________________________________________________ 36

7.3 Calibration of amperometric oxygen sensors ___________________________________________________________ 36

7.3.1 One-point calibration for amperometric oxygen sensors ___________________________________________ 37

7.3.1.1 Auto mode ____________________________________________________________________ 37

7.3.1.2 Manual mode __________________________________________________________________ 38

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7.3.2 Process calibration for amperometric oxygen sensors _____________________________________________ 38

7.4 pH calibration ___________________________________________________________________________________39

7.4.1 One point calibration ______________________________________________________________________ 39

7.4.1.1 Auto mode ____________________________________________________________________ 39

7.4.1.2 Manual Mode __________________________________________________________________ 40

7.4.2 Two-point calibration _____________________________________________________________________ 40

7.4.2.1 Auto Mode _____________________________________________________________________ 40

7.4.2.2 Manual Mode __________________________________________________________________ 41

7.4.3 Process calibration _______________________________________________________________________ 42

7.4.4 mV calibration (only for analog sensors) ______________________________________________________ 42

7.4.5 ORP calibration (only for ISM sensors) _______________________________________________________43

7.5 Sensor temperature calibration (only for analog sensors) _________________________________________________ 44

7.5.1 One-Point sensor temperature calibration ______________________________________________________ 44

7.5.2 Two-Point sensor temperature calibration ______________________________________________________ 44

7.6 Edit sensor calibration constants (only for analog sensor) _________________________________________________ 45

7.7 Sensor verication ________________________________________________________________________________ 45

8 Conguration _________________________________________________________________________________________ 46

8.1 Enter conguration mode __________________________________________________________________________ 46

8.2 Measurement ___________________________________________________________________________________ 46

8.2.1 Channel Setup ___________________________________________________________________________ 46

8.2.1.1 Analog sensor __________________________________________________________________ 47

8.2.1.2 ISM sensor ____________________________________________________________________ 47

8.2.1.3 Save changes of the channel setup _________________________________________________47

8.2.2 Temperature source (only for analog sensors) __________________________________________________ 48

8.2.3 Parameter related settings __________________________________________________________________ 48

8.2.3.1 Conductivity temperature compensation ______________________________________________49

8.2.3.2 Concentration table ______________________________________________________________ 50

8.2.3.3 pH / ORP parameters _____________________________________________________________51

8.2.3.4 Parameters for oxygen measurement based on amperometric sensors ______________________ 52

8.2.4 Set averaging ____________________________________________________________________________ 53

8.3 Analog outputs __________________________________________________________________________________ 54

8.4 Set points ______________________________________________________________________________________ 55

8.5 Alarm / Clean ___________________________________________________________________________________ 56

8.5.1 Alarm __________________________________________________________________________________ 56

8.5.2 Clean __________________________________________________________________________________ 57

8.6 ISM set up (available for pH and oxygen ISM sensors) ___________________________________________________ 58

8.6.1 Sensor monitoring ________________________________________________________________________ 58

8.6.2 CIP Cycle Limit ___________________________________________________________________________ 59

8.6.3 SIP Cycle Limit ___________________________________________________________________________ 60

8.6.4 Autoclaving Cycle Limit ____________________________________________________________________ 60

8.6.5 Reset ISM counter / timer ___________________________________________________________________ 61

8.6.6 DLI stress adjustment (only for pH ISM sensors) ________________________________________________ 61

8.7 Display ________________________________________________________________________________________ 62

8.7.1 Measurement ____________________________________________________________________________ 62

8.7.2 Resolution ______________________________________________________________________________ 63

8.7.3 Backlight _______________________________________________________________________________ 63

8.7.4 Name __________________________________________________________________________________ 63

8.7.5 ISM sensor monitoring (available when ISM sensor connected) _____________________________________64

8.8 Hold analog outputs ______________________________________________________________________________64

9 System ______________________________________________________________________________________________ 65

9.1 Set Language ___________________________________________________________________________________ 65

9.2 Passwords _____________________________________________________________________________________ 65

9.2.1 Changing passwords ______________________________________________________________________ 66

9.2.2 Conguring menu access for operator _________________________________________________________ 66

9.3 Set / Clear lockout ________________________________________________________________________________ 66

9.4 Reset __________________________________________________________________________________________ 66

9.4.1 Reset system ____________________________________________________________________________ 67

9.4.2 Reset meter calibration ____________________________________________________________________67

9.4.3 Reset analog calibration ___________________________________________________________________ 67

9.5 Set date & time __________________________________________________________________________________ 67

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10 PID setup ____________________________________________________________________________________________ 68

10.1 Enter PID setup __________________________________________________________________________________69

10.2 PID auto / manual ________________________________________________________________________________ 69

10.3 Mode __________________________________________________________________________________________ 69

10.3.1 PID mode _______________________________________________________________________________ 70

10.4 Tune parameters _________________________________________________________________________________ 71

10.4.1 PID assignment & tuning ___________________________________________________________________ 71

10.4.2 Setpoint & deadband ______________________________________________________________________71

10.4.3 Proportional limits ________________________________________________________________________ 71

10.4.4 Corner points ____________________________________________________________________________ 71

10.5 PID display _____________________________________________________________________________________72

11 Service ______________________________________________________________________________________________ 73

11.1 Diagnostics _____________________________________________________________________________________ 73

11.1.1 Model / Software revision ___________________________________________________________________ 73

11.1.2 Digital input _____________________________________________________________________________73

11.1.3 Display ________________________________________________________________________________74

11.1.4 Keypad ________________________________________________________________________________ 74

11.1.5 Memory ________________________________________________________________________________ 74

11.1.6 Set OC _________________________________________________________________________________ 74

11.1.7 Read OC _______________________________________________________________________________ 75

11.1.8 Set analog outputs ________________________________________________________________________ 75

11.1.9 Read analog outputs ______________________________________________________________________ 75

11.2 Calibrate _______________________________________________________________________________________ 75

11.2.1 Calibrate meter (only for channel A) __________________________________________________________ 76

11.2.1.1 Temperature ___________________________________________________________________ 76

11.2.1.2 Current _______________________________________________________________________ 76

11.2.1.3 Voltage _______________________________________________________________________ 77

11.2.1.4 Rg diagnostic __________________________________________________________________ 77

11.2.1.5 Rr diagnostic ___________________________________________________________________ 78

11.2.1.6 Calibrate analog output signals ____________________________________________________ 78

11.2.2 Calibrate unlock __________________________________________________________________________ 79

11.3 Tech Service ____________________________________________________________________________________ 79

12 Info _________________________________________________________________________________________________ 80

12.1 Messages ______________________________________________________________________________________ 80

12.2 Calibration data _________________________________________________________________________________80

12.3 Model / Software revision ___________________________________________________________________________ 81

12.4 ISM sensor info (available when ISM sensor connected) __________________________________________________ 81

12.5 ISM sensor diagnostics (available when ISM sensor connected) ____________________________________________81

13 Maintenance __________________________________________________________________________________________ 84

13.1 Front panel cleaning ______________________________________________________________________________84

14 Troubleshooting _______________________________________________________________________________________ 85

14.1 Cond (resistive) Error messages / Warning- and Alarm list for analog sensors __________________________________ 85

14.2 Cond (resistive) Error messages / Warning- and Alarm list for ISM sensors ____________________________________ 86

14.3 pH Error messages / Warning- and Alarm list ___________________________________________________________ 86

14.3.1 pH sensors except dual membrane pH electrodes _______________________________________________ 86

14.3.2 Dual membrane pH electrodes (pH / pNa) _____________________________________________________ 87

14.3.3 ORP messages _________________________________________________________________________ 87

14.4 Amperometric O

Error messages / Warning- and Alarm list ________________________________________________ 88

14.4.1 High level oxygen sensors __________________________________________________________________ 88

14.4.2 Low level oxygen sensors __________________________________________________________________ 88

14.4.3 Trace oxygen sensors _____________________________________________________________________ 89

14.5 Warning- and Alarm indication on the display __________________________________________________________ 90

14.5.1 Warning indication________________________________________________________________________ 90

14.5.2 Alarm indication __________________________________________________________________________ 90

15 Accessories and Spare Parts _____________________________________________________________________________ 91

16 Specications _________________________________________________________________________________________ 92

16.1 General specications ____________________________________________________________________________ 92

16.2 Electrical specications ____________________________________________________________________________ 95

16.3 Mechanical specications __________________________________________________________________________ 95

16.4 Environmental specications _______________________________________________________________________96

17 Default table __________________________________________________________________________________________ 97

18 Warranty ____________________________________________________________________________________________102

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Transmitter M400/2(X)H, M400G/2XH 8

19 Buffer tables _________________________________________________________________________________________103

19.1 Standard pH buffers _____________________________________________________________________________ 103

19.1.1 Mettler-9 _______________________________________________________________________________103

19.1.2 Mettler-10 _____________________________________________________________________________ 104

19.1.3 NIST Technical Buffers ____________________________________________________________________104

19.1.4 NIST standard buffers (DIN and JIS 19266: 2000–01) __________________________________________ 105

19.1.5 Hach buffers ___________________________________________________________________________105

19.1.6 Ciba (94) buffers ________________________________________________________________________ 106

19.1.7 Merck Titrisole, Riedel-de-Haën Fixanale _____________________________________________________ 106

19.1.8 WTW buffers ___________________________________________________________________________ 107

19.1.9 JIS Z 8802 buffers _______________________________________________________________________107

19.2 Dual membrane pH electrode buffers ________________________________________________________________ 108

19.2.1 Mettler-pH/pNa buffers (Na+ 3.9M) __________________________________________________________108

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Transmitter M400/2(X)H, M400G/2XH 9

1 Introduction

Statement of Intended Use – The 2-wire M400 multi-parameter transmitter is a single- channel online process instrument with HART® communication capabilities for measuring various properties of fluids and gases. These include Conductivity, Dissolved Oxygen, and pH / ORP. The M400 is available in two 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 guide M400/2(X)H, M400G/2XH Parameter M400/2(X)H M400G/2XH

Analog ISM Analog ISM pH / ORP • • • • Conductivity 2-e • – • – Conductivity 4-e • • • • Amp. DO ppm/ppb/trace •*/•/•/ •*/•/• •/•/•/ •/•/• Amp. O2 gas ppm/ppb/trace – – •/–/– •/•/• * THORNTON and INGOLD sensors

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 Multi-parameter transmitter can be configured to use its two analog and / or two open collector (OC) outputs for process control.

This description corresponds to the firmware release, version 1.0 for transmitter M400/2(X)H and M400G/2XH. Changes are taking place constantly, without prior notification.

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Transmitter M400/2(X)H, M400G/2XH 10

2 Safety instructions

This manual includes safety information with the following designations and formats.

2.1 Denition of equipment and documentation symbols and designations

WARNING: POTENTIAL FOR PERSONAL INJURY.

CAUTION: possible instrument damage or malfunction.

NOTE: Important operating information.

On the transmitter or in this manual text indicates: Caution and/or other possible hazard includ-

ing 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.

– 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 “Specifications”). – 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 de-

scribed 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 na-

tional 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 pro-

vided 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 OC 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.

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Transmitter M400/2(X)H, M400G/2XH 11

NOTE: PROCESS UPSETS

Because process and safety conditions may depend on consistent operation of this transmitter, provide appropriate means to maintain operation during sensor cleaning, replacement or sensor or instrument calibration.

NOTE: This is a 2-wire-product with two active 4–20 mA analog output.

2.2 Correct disposal of the unit

When the transmitter is finally removed from service, observe all local environmental regulations for proper disposal.

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Transmitter M400/2(X)H, M400G/2XH 12

3 Unit overview

The M400 models are available in 1/2DIN case size. The M400 models provide an integral IP66/NEMA4X housing for wall- or pipe mount.

3.1 Overview 1/2DIN

5.90

[150]

5.90

[150]

EnterInfo

CalMenu

M300

ESC

1: Hard Polycarbonate case 1: TB1 – Input and Output Analog Signal 2: Five Tactile-Feedback Navigation Keys 2: TB2 – Sensor Signal 3: Four-line LCD Display

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Transmitter M400/2(X)H, M400G/2XH 13

3.2 Control / Navigation Keys

3.2.1 Menu Structure

Below is the structure of the M400 menu tree:

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

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

3.2.2 Navigation keys

Menu Cal

Info

Enter

ESC

3.2.2.1 Navigating the menu tree

Enter the desired main Menu branch with the  c or  keys. Use the  and . keys to navigate through the selected Menu branch.

NOTE: In order to back up one menu page, without escaping to the measurement mode,

movethe cursor under the UP Arrow character (u) at the bottom right of the display screenandpress [ENTER].

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Transmitter M400/2(X)H, M400G/2XH 14

3.2.2.2 Escape

Press the  and c key simultaneously (escape) to return to the Measurement mode.

3.2.2.3 ENTER

Use the e 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 c 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 elds

Use the c 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

multiple setpoints). Be sure to use the c 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.

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Transmitter M400/2(X)H, M400G/2XH 15

3.2.5 Navigation with u in Display

If a u is displayed on the bottom right hand corner of the display, you can use the c 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.

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 & u” (Save changes and go back one screen) and ”No & Exit” (Don’t save changes and exit to measuring mode). The ”Yes & u” 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.

3.2.8 Display

NOTE: In the event of an alarm or other error condition the M400 Transmitter will display a flash-

ing a a 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 / OC, 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.

NOTE: Channel A (A is shown on the left side of the display) indicates that a conventional

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.

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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.

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

Optional hardware accessories are available that allow for panel- or pipe-mount. Refer to Section 15 for ordering information.

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4.1.2 Installation procedure

General:

– Orient the transmitter so that the cable grips face downward. – Wiring routed through the cable grips shall be suitable for use in wet locations. – In order provide IP66 enclosure ratings, all cable glands must be in place. Each cable gland

must be filled using a cable, or suitable Cable Gland Hole Seal.

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 – Mount rear housing to wall. Secure mounting kit to the M400 according to the supplied

instructions. Attach 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 dimen-

sions required for transmitter service and maintenance. Orient the transmitter so that the

cable grips are facing downward. – Replace the front housing to the rear housing. Securely tighten the rear-cover screws to

ensure that IP66/NEMA4X enclosure environmental rating is maintained. 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 Assembly – 1/2DIN version

1. 3 M20X1.5 cable glands

2. Plastics plugs

3. 4 screws

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Transmitter M400/2(X)H, M400G/2XH 18

4.1.4 1/2DIN version – Dimension drawings

90 mm

3.54"

43 mm

1.69"

136 mm / 5.35"

150 mm / 5.9"

114 mm / 4.49"

150 mm / 5.9"

28 mm

1.10"

27 mm

1.06"

90 mm / 3.54"

75 mm / 2.95"

35mm/

1.38”

6 mm/

0.236”

80 mm / 3.15"

5.39” 0.02”

137mm 0.5mm

4.1.5 1/2DIN version – Pipe mounting

40 ... 60 mm 1.57... 2.36"

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Transmitter M400/2(X)H, M400G/2XH 19

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.

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 14–30 VDC power source. Refer to specifications for power requirements and ratings and size power wiring accordingly (AWG 16 – 24, wire cross-section 0.2 mm2 to 1.5 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 0.2 mm2 to 2.5 mm2 (AWG 16 –

24). 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 d symbol.

4.2.1 Housing (wall mount)

1: TB1 – Input and Output Analog Signal 2: TB2 – Sensor Signal

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Transmitter M400/2(X)H, M400G/2XH 20

4.3 Connector PIN denition

4.3.1 Terminal Block (TB) Denitions

Power connections are labeled – N for Neutral and + L for Line, for 14–30 VDC.

TB1

TB2

A Q

1 9 10 15

Power connections are labeled A01+ / HART and A01– / HART resp. A02+ and A02– for 14 to 30 VDC.

TB1

1 DI1+

2 DI1–

3 DI2+

4 DI2–

5 Not used

6 OC1+

7 OC1–

8 OC2+

9 OC2–

10 AO1+/HART 11 AO1–/HART 12 AO2+ 13 AO2– 14 Not used 15

OC1, 2 =

Open collector output 1, 2.

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Transmitter M400/2(X)H, M400G/2XH 21

4.3.2 TB2 Conductivity 4-E/2-E Analog Sensors

TB2 – Analog Sensors

Cond 4-E or 2-E

Terminal Function Color

A Cnd inner1* white B Cnd outer1* white/blue C Cnd outer1 – D Not used – E Cnd outer2 – F Cnd inner2** blue G Cnd outer2 (GND)** black H Not used – I RTD ret/GND bare shield J RTD sense red K RTD green L Not used – M Not used – N Not used – O Not used – P Not used – Q Not used –

* For third party Cond 2-E sensors may be jumper between A and B has to be installed. ** For third party Cond 2-E sensors may be jumper between F and G has to be installed.

4.3.3 Analog Sensors

TB2 – Analog Sensors

pH Redox (ORP)

Terminal Function Color* Function Color

A Glass transparent Platinum transparent B Not used – – – C No used – – – D Not used – – – E Reference red Reference red F Reference** – Reference** – G Solution GND** blue*** Solution GND** – H Not used – – – I RTD ret/GND white – – J RTD sense – – – K RTD green – – L Not used – – – M Shield (GND) green/yellow Shield (GND) green/yellow N Not used – – – O Not used – – – P Not used – – – Q Not used – – –

* Grey wire not used. ** Install jumper between F and G for ORP sensors and pH electrodes without SG. *** Blue wire for electrode with SG.

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Transmitter M400/2(X)H, M400G/2XH 22

4.3.4 TB2 Analog Oxygen Sensors

InPro6800(G) InPro6900 InPro6950

Terminal Function Color Color Color

A Not used – – – B Anode red red red C Anode –* –* – D Reference –* –* blue E Not used – – – F Not used – – – G Guard – grey grey H Cathode transparent transparent transparent I NTC ret (GND) white white white J Not used – – – K NTC green green green L Not used – – – M Shield (GND) green/yellow green/yellow green/yellow N Not used – – – O Not used – – – P + input 4/20 mA signal – – – Q – input 4/20 mA signal – – –

* Install jumber between C and D for InPro6800(G) and InPro6900

4.3.5 TB2 – ISM (Digital) Sensors

pH, amp. Oxygen, Cond 4-e

Terminal Function Color

A Not used – B Not used – C Not used – D Not used – E Not used – F Not used – G Not used – H Not used – I Not used – J Not used – K Not used – L 1-wire transparent (cable core) M GND red (shield) N Not used – O Not used – P Not used – Q Not used –

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Transmitter M400/2(X)H, M400G/2XH 23

4.4 Connection of ISM (digital) sensors

4.4.1 Connection of ISM sensors for pH/ORP,

Cond 4-e and amperometric oxygen measurement

NOTE: Connect the sensor and screw the plug head clockwise (hand tight).

4.4.2 TB2 – AK9 cable assignment

* 1-wire data (transparent) ** Ground/shield

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Transmitter M400/2(X)H, M400G/2XH 24

4.5 Connection of analog sensors

4.5.1 Connection of analog sensor for pH / ORP

NOTE: Cable lengths > 20 m can worsen the response during pH measurement. Be sure to

observe the sensor instruction manual.

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Transmitter M400/2(X)H, M400G/2XH 25

4.5.2 TB2 – Typical wiring for analog pH/ORP sensor

4.5.2.1 Example 1

pH measurement without Solution Ground

yellowgreen

green

red

transparent

white

Combination pH electrode

Temperature probe

Cable

Jumper

NOTE: Jumber terminals G and F

Wire Colors only valid for connection with VP caple; blue and grey not connected. A: Glass E: Reference I: RTD ret/GND K: RTD M: Shield/GND

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Transmitter M400/2(X)H, M400G/2XH 26

4.5.2.2 Example 2

pH measurement with Solution Ground

yellowgreen

green

red

transparent

white

Combination pH electrode with RTD and SG

Temperature probe

blue

Cable

NOTE: Wire colors only valid for connection with VP cable, grey not connected.

A: Glass E: Reference G: Shield/Solution GND I: GND/RTD ret K: RTD M: Shield(GND)

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Transmitter M400/2(X)H, M400G/2XH 27

4.5.2.3 Example 3

ORP (redox) measurement (temperature optional)

ORP electrode

Temperature

Reference electrode

Sensing electrode

probe

Cable

Jumper

NOTE: Jumper terminal G and F

A: Platinum E: Reference I: RTD ret/GND K: RTD M: Shield(GND)

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Transmitter M400/2(X)H, M400G/2XH 28

4.5.2.4 Example 4

ORP measurement with pH solution ground electrode (e.g. InPro 3250, InPro 4800 SG).

yellowgreen

green

red

transparent

white

Combination pH electrode with RTD and SG

Temperature probe

blue

Cable

Not connected

Jumper

NOTE: Jumper terminal G and F

A: Platinum E: Reference I: RTD ret/GND K: RTD M: Shiled(GND)

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Transmitter M400/2(X)H, M400G/2XH 29

4.5.3 Connection of analog sensor for amperometric

oxygen measurement

NOTE: Be sure to observe the sensor instruction manual.

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Transmitter M400/2(X)H, M400G/2XH 30

4.5.4 TB2 – Typical wiring for analog sensor for

Amperometric oxygen measurement

red

transparent

yellow/green

een

white

grey

blue

NOTE: Wire colors only valid for connection with VP cable, but not connected.

M400 connector: B: Anode G: Reference H: Cathode I: NTC ret/Guard K: NTC M: Shield (GND)

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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9.2 “Passwords”)

NOTE: Please find the complete description of the Quick Setup routine described in the separate

booklet “Quick Setup Guide for Transmitter M400” enclosed in the box.

NOTE: Please do not use Quick Setup menu after configuration of the transmitter, because some

of the parameters i.e. analog output configuration will may be reseted.

NOTE: Refer to section 3.2 “Control/Navigation Keys” for information on menu navigation.

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7 Sensor Calibration

(PATH: Cal)

The calibration key c 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

Display indicates a calibration is in process with a Hold condition active. (The hold output needs to be activated.) See also chapter 3.2.8 “Display”.

7.1 Enter Calibration Mode

While in Measurement mode press the c key. If the display prompts you to enter the Calibration

security code, press the  or . key to set the calibration security mode, the [ENTER] key to confirm the calibration security code.

Press the  or . key to select the type of calibration desired.

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, ORP*** Press [ENTER].

** only on channel ”A” *** only available on channel ”B”

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

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7.2 Conductivity calibration

for two- or four-electrode sensors

This feature provides the ability to perform a one-point, two-point or process Conductivity resp. Resistivity “Sensor” calibration for two- or four-electrode sensors. 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.

NOTE: When performing calibration on a conductivity sensor, results will vary depending on the

methods, calibration apparatus and/or quality of reference standards used to perform the calibration.

NOTE: For measuring tasks the temperature compensation for the application as defined at the

menu Resistivity will be considered and not the temperature compensation selected thru the calibration procedure (see also chapter 8.2.3.1 “Conductivity temperature compensation”; PATH: Menu/Configure/Measurement/Resistivity).

Enter Conductivity sensor calibration mode as described in section 7.1 “Enter Calibration Mode”.

The next screen will ask to select the type of temperature compensation mode desired during the calibration process.

Choices are “Standard”, “Lin 25 °C”, “Lin 20 °C” or “Nat H2O” compensation mode.

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.

Lin 25°C compensation: adjusts the reading by a factor expressed as “% per °C” deviation

from 25 °C. The factor can be modified.

Lin 20°C compensation: adjusts the reading by a factor expressed as “% per °C” deviation

from 20 °C. The factor can be modified.

Nat H2O compensation: includes compensation to 25 °C according to EN27888 for natural

water.

Choose the compensation mode, modify the factor where appropriate and press [ENTER].

7.2.1 One-point sensor calibration

(Display reflects typical Conductivity Sensor calibration)

Enter Conductivity Sensor Calibration mode as described in section 7.1 “Enter Calibration Mode” and choose one of the compensation modes (see section 7.2 “Conductivity calibration for two or four electrode sensors”).

Select 1 point calibration and press [ENTER]. With conductivity sensors a one-point calibration

is always performed as a slope calibration.

Place the electrode into the reference solution.

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Transmitter M400/2(X)H, M400G/2XH 35

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 cell multiplier or slope calibration factor ”M” i.e. cell constant and the

Adder or offset calibration factor ”A” are displayed.

In case of a successful calibration, the calibration values are stored in the cal history* and taken over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

* only available with ISM sensor. The values will be stored in the sensor.

If ”Adjust” or ”Calibrate” are chosen, the message ”Calibration successful” is displayed. In any case you will get the message ”Re-install sensor” and ”Press ENTER” on the display. After pressing ”ENTER” the M400 returns to the measuring mode.

7.2.2 Two-point sensor calibration

(four electrode sensors only)

(Display reflects typical Conductivity sensor calibration)

Select 2 point calibration and press [ENTER].

Place the electrode into the first reference solution.

CAUTION: Rinse sensors with a high-purity water solution between calibration points to prevent contamination of the reference solutions.

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 and place the electrode into the second reference solution.

Enter the value for Point 2 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 of the cell multiplier or slope calibration factor ”M” i.e. cell constant and the

adder or offset calibration factor ”A” are displayed.

In case of a successful calibration, the calibration values are stored in the cal history* and taken over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

* only available with ISM sensor. The values will be stored in the sensor.

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Transmitter M400/2(X)H, M400G/2XH 36

7.2.3 Process Calibration

(Display reflects typical Conductivity sensor calibration)

Select Process Calibration and press [ENTER]. With conductivity sensors a process calibration

is always performed as a slope calibration.

Take a sample and press the [ENTER] key again to store the current measuring value.

During the ongoing calibration process, the letter of the channel, which is concerned by the calibration, “A” or “B” is blinking in the display.

After determining the conductivity value of the sample, press the [CAL] key again to proceed with the calibration.

Enter the conductivity value of the sample, then press the [ENTER] key to start the calculation of

calibration results.

After the calibration the Multiplier or slope calibration factor “M” and the Adder or offset calibra-

tion factor “A” are displayed.

In case of a successful calibration, the calibration values are stored in the cal history* and taken over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

* only available with ISM sensor. The values will be stored in the sensor.

If “Adjust” or “Calibrate” are chosen, the message “Calibration successful” is displayed. The M400 returns to the measuring mode.

7.3 Calibration of amperometric oxygen sensors

Oxygen calibration for amperometric sensors is performed as either a one-point or process calibration.

NOTE: Before air calibration, for highest accuracy, enter the barometric pressure and relative hu-

midity, as described in section 8.2.3.4 “Parameters for oxygen measurement based on amperometric sensors”.

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Transmitter M400/2(X)H, M400G/2XH 37

7.3.1 One-point calibration for amperometric oxygen

sensors

Enter Oxygen calibration mode as described in section 7.1 “Enter Calibration Mode”.

A one-point calibration of oxygen sensors is always either a one point slope (i.e. with air) 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 oxygen. A one-point zero dissolved oxygen calibration is available but not normally recommended since zero oxygen is very hard to achieve. 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 or ZeroPt as the calibration type.

Press [ENTER].

Adjust calibration pressure (CalPres) and relative humidity (RelativeHumid), which are applied

during calibration. Press [ENTER].

Place the sensor in the calibration gas (e.g. air) resp. solution. Press [ENTER].

Depending on the parameterized Drift control (see chapter 8.2.3.4 “Parameters for oxygen measurement based on amperometric sensors”) one of the two following modes is active.

7.3.1.1 Auto mode

NOTE: For a zero point calibration the Auto mode is not available. If Auto mode has been config-

ured (see section 8.2.3.4 “Parameters for oxygen measurement based on amperometric sensors”) and an offset calibration will be executed, the transmitter will perform the calibration in Manual mode.

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.

As soon as the stabilization criteria have been fulfilled the display changes. The display shows

the calibration result for slope “S” and offset value ”Z”.

In case of a successful calibration, the calibration values are stored in the cal history* and taken over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

* only available with ISM sensor. The values will be stored in the sensor.

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Transmitter M400/2(X)H, M400G/2XH 38

7.3.1.2 Manual mode

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 “S” and the offset value ”Z” are displayed.

In case of a successful calibration, the calibration values are stored in the cal history* and taken over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

* only available with ISM sensor. The values will be stored in the sensor.

If “Adjust” or “Calibrate” are chosen, the message “Calibration successful” is displayed. In any case you will get the message “Re-install sensor” and “Press ENTER” on the display. After pressing “ENTER” the M400 returns to the measuring mode.

NOTE: With ISM sensors: If a one point calibration is executed, the transmitter sends the polar-

ization voltage, valid for the calibration, to the sensor. If the polarization voltage for the measuring mode and calibration mode is different, the transmitter will wait 120 seconds before starting the calibration. In this case the transmitter will also go after the calibration for 120 seconds to the HOLD Mode, before returning to the measuring mode again. (see also chapter8.2.3.4 “Parameter for oxygen measurement based on amperometric sensors”).

7.3.2 Process calibration for amperometric oxygen sensors

Enter Oxygen calibration mode as described in section 7.1 “Enter Calibration Mode”.

A process calibration of oxygen sensors is always either a slope or a offset calibration.

Select Process followed by either Slope or ZeroPt 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 c key again to proceed with the calibration.

Enter the O2 value of the sample then press the [ENTER] key to start the calculation of the

calibration results.

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Transmitter M400/2(X)H, M400G/2XH 39

After the calibration the slope ”S” and the offset value ”Z” are displayed.

In case of a successful calibration, the calibration values are stored in the cal history* and taken over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

* only available with ISM sensor. The values will be stored in the sensor.

If ”Adjust” or ”Calibrate” are chosen, the message ”Calibration successful” is displayed. The M400 returns to the measuring mode.

7.4 pH calibration

For pH sensors, the M400 transmitter features one-point, two-point (Auto or Manual mode) or process calibration with 9 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 8.2.3.3 “pH/ORP parameters” for configuring modes and selecting buffer sets.) Please select the correct buffer table before using automatic calibration (see chapter 19 “Buffer tables”).

NOTE: For dual membrane pH electrodes (pH/pNa) only buffer Na+ 3.9M (see section 19.2.1

“Mettler-pH/pNa buffers”) is available.

7.4.1 One point calibration

Enter pH calibration mode as described in section 7.1 “Enter Calibration Mode”.

Select 1 point Calibration. With pH sensors a one point calibration is always performed as a

offset calibration.

Depending on the parameterized Drift control (see chapter 8.2.3.3 “pH parameters”) one of the two following modes is active.

7.4.1.1 Auto mode

Place the electrode in the buffer solution and press the [ENTER] key to start the calibration.

The display shows the buffer the transmitter has recognized (Point 1) and the measured value.

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Transmitter M400/2(X)H, M400G/2XH 40

As soon as the stabilisation criteria have been fulfilled the display changes. The display shows

now the slope calibration factor S and the offset calibration factor Z.

In case of a successful calibration, the calibration values are stored in the cal history* and taken over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

* only available with ISM sensor. The values will be stored in the sensor.

7.4.1.2 Manual Mode

Place the electrode in the buffer solution. The display shows the buffer the transmitter has recog-

nized (Point 1) and the measured value. Press [ENTER] to proceed.

The display shows now the slope calibration factor S and the offset calibration factor Z.

In case of a successful calibration, the calibration values are stored in the cal history* and taken

over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

* only available with ISM sensor. The values will be stored in the sensor.

7.4.2 Two-point calibration

Enter pH calibration mode as described in section 7.1 “Enter Calibration Mode”.

Select 2 Point calibration.

Depending on the parameterized Drift control (see chapter 8.2.3.3 “pH parameters”) one of the two following modes is active.

7.4.2.1 Auto Mode

Place the electrode in the first buffer solution and then press the [ENTER] key.

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Transmitter M400/2(X)H, M400G/2XH 41

The display shows the buffer the transmitter has recognized (Point 1) and the measured value.

As soon as the stabilisation criteria have been fulfilled stabilisation criteria have been fulfilled,

the display changes and prompts you to place the electrode in the second buffer.

Place the electrode in the second buffer solution and press the [ENTER] key to go on with the calibration.

The display shows the second buffer the transmitter has recognized (Point 2) and the measured

value.

As soon as the stabilisation criteria have been fulfilled the display changes to show the slope

calibration factor S and the offset calibration factor Z.

In case of a successful calibration, the calibration values are stored in the cal history* and taken over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

* only available with ISM sensor. The values will be stored in the sensor.

7.4.2.2 Manual Mode

Place the electrode in the first buffer solution. The display shows the buffer the transmitter has

recognized (Point 1) and the measured value. Press [ENTER] to proceed.

Place the transmitter in the second buffer solution. The display shows the buffer the transmitter

has recognized (Point 2) and the measured value. Press [ENTER] to proceed.

The display shows the slope calibration factor S and the offset calibration factor Z.

In case of a successful calibration, the calibration values are stored in the cal history* and taken over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

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Transmitter M400/2(X)H, M400G/2XH 42

7.4.3 Process calibration

Enter pH calibration mode as described in section 7.1 “Enter Calibration Mode”.

Select Process calibration. With pH sensors a process calibration is always performed as a

offset 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 [CAL] key again to proceed with the

calibration.

Enter the pH value of the sample then press the [ENTER] key to start the calculation of the

calibration results.

After the calibration the slope calibration factor S and the offset calibration factor Z are displayed.

In case of a successful calibration, the calibration values are stored in the cal history* and taken over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).

* only available with ISM sensor. The values will be stored in the sensor.

If ”Adjust” or ”Calibrate” are chosen, the message ”Calibration successful” is displayed. The M400 returns to the measuring mode.

7.4.4 mV calibration (only for analog sensors)

Enter mV calibration mode as described in section 7.1 “Enter Calibration Mode”.

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Transmitter M400/2(X)H, M400G/2XH 43

The user can now enter Point 1. The offset calibration factor is calculated by using the value of

Point1 instead of the measured value (line 4, mV = ....) and displayed on the next screen.

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 (Adjust) or discarded (Calibrate) or (Abort).

If ”Adjust” is chosen, the message ”Calibration successful” is displayed. In any case you will get the message ”Re-install sensor” and ”Press ENTER” on the display. After pressing ”ENTER” the M400 returns to the measuring mode.

7.4.5 ORP calibration (only for ISM sensors)

In case that an pH sensor with solution ground based on ISM technology is connected to theM400, the transmitter gives the option to make in addition to the pH calibration an ORP calibration.

NOTE: In case of choosing ORP calibration the parameters defined for pH (see chapter 8.2.3.3

“pH/ORP parameters”, PATH: Menu/Configure/Measurement/pH) will not be considered.

Enter ORP calibration mode as described in section 7.1 “Enter Calibration Mode”.

The user can now enter Point 1. In addition the actual ORP is displayed.

Press [ENTER] to proceed.

The display shows 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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Transmitter M400/2(X)H, M400G/2XH 44

7.5 Sensor temperature calibration

(only for analog sensors)

Enter Sensor calibration mode as described in section 7.1 “Enter Calibration Mode” 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 (Adjust) or aborted

(Calibrate, Abort).

If “Adjust” has been chosen, the message “Calibration successful” is displayed. In any case yo will get the message “Re-install sensor” and “Press ENTER” on the display. After pressing “ ENTER” the M400 returns to the measuring mode.

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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Transmitter M400/2(X)H, M400G/2XH 45

After a successful calibration, the calibration values are taken over (Adjust) or aborted

(Calibrate, Abort).

If “Adjust” has been chosen, the message “Calibration successful” is displayed. In any case you will get the message “Re-install sensor” and “Press ENTER” on the display. After pressing “ENTER” the M400 returns to the measuring mode.

7.6 Edit sensor calibration constants

(only for analog sensor)

Enter Calibration mode as described in section 7.1 “Enter Calibration Mode” and select Edit,

EditpH, 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 analog conductivity sensor is connected to the M400 Type 1, 2

transmitter, it is necessary to enter the unique calibration data (cell constant and offset) located on the sensor label.

7.7 Sensor verication

Enter Calibration mode as described in section 7.1. “Enter Calibration Mode” 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.

Press [ENTER] to exit from this display.

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Transmitter M400/2(X)H, M400G/2XH 46

8 Conguration

(PATH: Menu / Configure)

Configure

Measurement Analog Outputs Set Points Alarm/Clean ISM Setup* Display Hold Outputs

* Only available in combination with ISM sensors

8.1 Enter conguration 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 “Enter configuration mode”.

Press the [ENTER] key to select this menu. The following sub menus can now be selected: Channel Setup, Temperature Source, Comp / pH / O2 and Set Averaging.

8.2.1 Channel Setup

(PATH: Menu / Configure / Measurement / Channel Setup)

Press the [ENTER] key to select the ”Channel Setup” menu.

Depending on the connected sensor (analog or ISM) the channel can be chosen.

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Transmitter M400/2(X)H, M400G/2XH 47

8.2.1.1 Analog sensor

Select sensor type Analog and press [ENTER].

Available measurement types are (depends on transmitter type):

Measurement parameter Transmitter

pH / ORP = pH or ORP M400/2(X)H, M400G/2XH Cond (2) = 2 electrode conductivity M400/2(X)H, M400G/2XH Cond (4) = 4 electrode conductivity M400/2(X)H, M400G/2XH O2 hi = Dissolved oxygen (ppm) M400/2(X)H, M400G/2XH O2 lo = Dissolved oxygen (ppb) M400/2(X)H, M400G/2XH O2 Trace = Dissolved oxygen (trace) M400/2(X)H, M400G/2XH O2 hi = Oxygen in gas (ppm) M400G/2XH

The 4 lines of the display can now be configured with sensor channel ”A” 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.

8.2.1.2 ISM sensor

Select sensor type ISM and press [ENTER].

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, pH / pNa, Cond(4), O2 hi, 02 lo, O2 trace), depending on the type of transmitter you have.

Measurement parameter Transmitter

pH / ORP = pH and ORP M400/2(X)H, M400G/2XH pH/pNa = pH and ORP (with pH/pNa electrode) M400/2(X)H, M400G/2XH Cond (4) = 4 electrode conductivity M400/2(X)H, M400G/2XH O2 hi = Dissolved oxygen (ppm) M400/2(X)H, M400G/2XH O2 lo = Dissolved oxygen (ppb) M400/2(X)H, M400G/2XH O2 Trace = Dissolved oxygen (trace) M400/2(X)H, M400G/2XH O2 hi = Oxygen in gas (ppm) M400G/2XH O2 lo = Oxygen in gas (ppb) M400G/2XH O2 Trace = Oxygen in gas (trace) M400G/2XH

NOTE: Beside the measurement values pH, O2, T, etc. also the ISM values DLI, TTM and ACT

can be assigned to the different lines and linked to the analog outputs (see Chapter 8.3 “Analog outputs”) or set points (see chapter 8.4 “Set points”)

8.2.1.3 Save changes of the channel setup

After the procedure of the channel setup described in the previous chapter 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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Transmitter M400/2(X)H, M400G/2XH 48

8.2.2 Temperature source (only for analog sensors)

(PATH: Menu/Configure/Measurement/Temperature Source)

Enter Measurement as described in chapter 8.2 “Measurement”. Select Temperature Source by

using the  or . key and press [ENTER].

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 Pt1 00: 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.

NOTE: If temperature source is set to Fixed, the temperature applied during one-point and/or two-

point calibration of pH electrodes can be adjusted within the corresponding calibration procedure. After the calibration the fixed temperature defined in this configuration menu is valid again.

Pressing the [ENTER] key will bring up the Save Changes dialog.

Selecting No will discard the entered values and return to the measurement display screen, se-

lecting Yes will save changes made.

8.2.3 Parameter related settings

(PATH: Menu/Configure/Measurement/pH)

Additional measurement and calibration parameters can be set for each parameter; conductivity, pH, and O2.

NOTE: Use pH menu for settings of pH/pNa sensors.

Enter Configuration Mode as described in section 8.1 “Enter Configuration mode” and select the menu Measurement (see section 8.2 “Configuration/Measurement”).

Depending on the connected sensor, the menu pH, O2, can be selected by using the A or .

key. Press [ENTER]

For more details, please see the following explanations depending on the selected parameter.

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8.2.3.1 Conductivity temperature compensation

If during the channel setup (see chapter 8.2.1 “Channel setup”) the parameter conductivity has been chosen or an four-electrode conductivity sensor based on ISM technology is connected to the transmitter, the temperature compensation mode can be selected. Temperature compensation should be matched to the characteristics of the application. The transmitter considers this value for the temperature compensation by calculating and displaying the result for the measured conductivity.

NOTE: For calibration purposes the temperature compensation as defined at the menu “Cal/Com-

pensation” for the buffers resp. samples will be considered (see also chapter 7.2 “Conductivity Calibration for two- or four-electrode sensors” resp)

For doing this adjustment the menu “Resistivity”, that will be displayed, has to be chosen. (see chapter 8.2.3 “Parameter related settings”)

The first two measurement lines are displayed on the screen. This chapter described the procedure for the first measurement line. By using the key c the second line will be chosen. To select the 3rd and 4th line press [ENTER]. The procedure itself works at every measurement line in the same way.

Choices are ”Standard”, ”Lin 25°C” and ”Lin 20°C”.

Standard compensation includes compensation for non-linear high purity effects as well as con-

ventional neutral salt impurities and conforms to ASTM standards D1125 and D5391.

Lin 25 °C compensation adjusts the reading by a factor expressed as a ”% per °C” (deviation

from 25 °C). Use only if the solution has a well-characterized linear temperature coefficient.

The factory default setting is 2.0% / °C.

Lin 20 °C compensation adjusts the reading by a factor expressed as a ”% per °C” (deviation

from 20 °C). Use only if the solution has a well-characterized linear temperature coefficient.

The factory default setting is 2.0% / °C

If compensation mode ”Lin 25 °C” or ”Lin 20 °C” has been chosen, the factor for the adjustment

of the reading can be modified after pressing [ENTER] (If working at measurement line 1 or 2 press [ENTER] twice).

Adjust the factor for temperature compensation.

Pressing [ENTER] 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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8.2.3.2 Concentration table

To specify customers-specific solutions, up to 9 concentration values can be edited in a matrix together with up to 9 temperatures. To do so the desired values are edited under the concentration table menu. Furthermore the conductivity values for the according temperature and concentration values are edited.

For doing the settings the menu “Concentration Table”, that will be displayed, has to be chosen. (see chapter 8.2.3 “Parameter related settings”).

Define the desired unit.

Press [ENTER]

NOTE: Refer to section 8.2.1 “Channel Setup” to choose the unit used in the display.

Enter the amount of desired temperature points (Temp Point) and Concentration Points.

Press [ENTER]

Enter the values for the different concentrations (ConcentrationX).

Press [ENTER]

Enter the value of the 1st temperature (Temp1) and the value for the conductivity which belongs

to the first concentration at this temperature.

Press [ENTER]

Enter the value for the conductivity which belongs to the second concentration at the first temperature and press [ENTER] etc..

After entering all conductivity values, that belong to the different concentrations at the first temperature point, enter in the same way the value of the 2nd temperature point (Temp2) and the conductivity value which belongs at the second temperature to the first concentration. Press [ENTER] and go on in the same way for the next concentration points as described for the first temperature point.

Enter in this way the values at every temperature point. After entering the last value, 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.

NOTE: The values for the temperature have to increase from Temp1 to Temp2 to Temp3 etc.. The

values for the concentration have to increase from Concentration1 to Concentration2 to Concentration3 etc..

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NOTE: The conductivity values at the different temperatures have to increase or decrease from

Concentration1 to Concentration2 to Concentration3 etc.. Maxima and/or minima are not permitted. If the conductivity values at Temp1 are increasing with the different concentrations, they have to increase also at the other temperatures. If the conductivity values at Temp1 are decreasing with the different concentrations, they have to decrease also at the other temperatures.

8.2.3.3 pH / ORP parameters

If during the channel setup (see chapter 8.2.1 “Channel setup”) the parameter pH/ORP has been chosen or an pH sensor based on ISM technology is connected to the transmitter, the parameters drift control, buffer recognition, STC, I P, fixed Calibration temperature and the displayed units for slope and zero point can be set resp. adjusted.

For doing this adjustments resp. settings the menu “pH”, that will be displayed, has to be chosen. (see chapter 8.2.3 “Parameter related settings”).

Select the drift control for calibration as Auto (drift and time criteria have to be fulfilled) or man-

ual (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 Not Done” Press ENTER Enter to ”Exit” is displayed.

Press [ENTER]

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, JIS Z 8802 or None. See Section 19 “Buffer tables” for buffer values. If the auto buffer feature will not be used or if the available buffers are different from those above, select None. Press [ENTER].

NOTE: For dual membrane pH electrodes (pH/pNa) only buffer Na+ 3.9M (see section 19.2.1

“Mettler-pH/pNa buffers”) is available.

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. Press [ENTER].

IP is the isothermal point value (Default = 7.000 for most applications). For specific compensa-

tion requirements or non standard inner buffer value, this value can be changed. Press [ENTER].

STC RefTemp sets the temperature to which solution temperature compensation is referenced.

The displayed value and the output signal is referenced to STC RefTemp. Selecting ”No” means solution temperature compensation is not used. The most common reference temperature is 25°C. Press [ENTER].

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The units for the slope and the zero point, that will be shown on the display can be chosen. The

default setting for the unit of the slope is [%] and can be changed to [pH/mV]. For the zero point the default setting of the unit is [pH] and can be changed to [mV]. Use the c key to move to the input field and select the unit by using the  or . key.

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.

8.2.3.4 Parameters for oxygen measurement

based on amperometric sensors

If during the channel setup (see chapter 8.2.1 “Channel setup”) the parameter O2 hi, O2 lo or O2 Trace has been chosen or an oxygen sensor based on ISM technology is connected to the transmitter, the parameters calibration pressure, process pressure, ProCalPres, salinity and relative humidity can be set resp. adjusted. If an ISM sensor is connected, there is furthermore the option to adjust the parameterization voltage.

For doing this adjustments resp. settings the menu “O2”, that will be displayed, has to be chosen. (see chapter 8.2.3 “Parameter related settings”)

Enter the Calibration pressure in line 3. The default value for CalPres is 759.8 and the default

unit is mmHg.

Select Edit in line 4 for entering the applied process pressure manually. Select Ain if an analog input signal is used for the applied process pressure. Press [ENTER]

NOTE: The menu Ain can only be selected if the transmitter is configured for an ISM sensor.

If Edit has been chosen an input field for entering the value manually is displayed. In case that

Ain has been selected the start value (4mA) and the end value (20 mA) of the range for the 4 to mA input signal have to be entered.

Press [ENTER]

For the algorithm of the process calibration the applied pressure (ProcCalPres) has to be de-

fined. The value of the process pressure (ProcPres) or the calibration pressure (CalPres) can be used. Chose the pressure, that applies during the process calibration, resp. should be used for the algorithm.

Select the required Drift Control of the measuring signal during the calibration procedure. Choose Manual if the user will decide when a signal is stable enough to complete the calibration. Select Auto and an automatic stability control of the sensor signal during calibration through the transmitter will be done. Press [ENTER]

In the next step the salinity of the measured solution can be modified.

In addition the relative humidity of the calibration gas can also be entered. The allowed values for relative humidity are in the range 0% to 100%. When no humidity measurement is available, use 50% (default value).

Press [ENTER]

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If an ISM sensor has been connected resp. configured there is furthermore the option to adjust

the polarization voltage for the sensor. Different value can be entered for the measuring mode (Umeaspol) and for the calibration mode (Ucalpol). For entered values 0 mV to –550 mV the connected sensor will be set to a polarization voltage of –500mV. If the entered value is less then –550mV, the connected sensor will set to a polarization voltage of –674mV.

NOTE: During a process calibration, the polarization voltage Umeaspol, defined for the measur-

ing mode, will be used.

NOTE: If a one point calibration is executed, the transmitter sends the polarization voltage, valid

for the calibration, to the sensor. If the polarization voltage for the measuring mode and calibration mode is different, the transmitter will wait 120 seconds before starting the calibration. In this case the transmitter will also go after the calibration for 120 seconds to the HOLD Mode, before returning to the measuring mode again.

Press [ENTER]

The display shows 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

Enter Configuration Mode as described in section 8.1 ”Enter Configuration mode” and select the menu Measurement (see section 8.2 ”Configuration/Measurement”).

Selected the menu “Set Averaging” by using the  or . key. Press [ENTER]

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 dis-

card 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 8.1. “Enter Configuration Mode” and navigate

to the menu “Analog Outputs” by using the  or . key.

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 c buttons to 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 (see chapter 8.5.1 “Alarm”;

PATH: Menu/Configure/Alarm/Clean/Setup Alarm), the analog output will go to this value if any of these alarm conditions occurs.

Parameter Selectable Values

Aout: 1, 2, 3 or 4 (default is 1) Measurement: a, b, c, d or blank (none) (default is a) Alarm Value: 3.6 mA, 22.0 mA or Off (default is off)

NOTE: Beside the measurement values pH, O2, T, etc. also the ISM values DLI, TTM and ACT

can be linked to the analog outputs if they have been assigned to the corresponding line in the display (see chapter 8.2.1.2 “ISM sensor”)

The Aout type can be Normal, Bi-Linear, Auto-Range or Logarithmic. The range can be 4–20 mA or 0–20 mA. Normal provides linear scaling between the minimum and maximum scaling limits 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 val-

ue for the first range on auto-range. The maximum value for the second range on auto-range 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.

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Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will dis-

card the entered values and return to the measurement display screen, selecting Yes will save changes made.

8.4 Set points

(PATH: Menu / Configure / Set Points)

Enter Configuration mode as described in Section 8.1. “Enter Configuration Mode” and navigate

to the menu “Set Points” by using the  or . key.

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 Set-

point 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]

NOTE: Beside the measurement values pH, O2, T, etc. also the ISM values DLI, TTM and ACT

can be linked to the set points if they have been assigned to the corresponding line in the display (see chapter 8.2.1.2 “ISM sensor”).

Depending on the defined setpoint type, this screen provides the option to adjust the values for

the setpoint(s).

Press [ENTER] to proceed.

Out of Range

Once configured, the selected OC will be activated if a sensor Out of Range condition is detected on the assigned input channel. Select the setpoint and ”Yes” or ”No”. Select the desired OC that will activate when the setpoint alarm condition is reached.

Press [ENTER]

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 OC. If the condition disappears before the delay period is over, the OC will not be activated.

Hysteresis

Enter value for the hysteresis. A hysteresis value requires the measurement to return within the setpoint value by a specified hysteresis before the OC is deactivated.

For a high setpoint, the measurement must decrease more than the indicated hysteresis below the setpoint value before the OC is deactivated. With a low setpoint, the measurement must rise at least this hysteresis above the setpoint value before the OC is deactivated. For example, with a high setpoint of 100 and hysteresis of 10, when this value is exceeded, the measurement must fall below 90 before the OC is deactivated.

Press [ENTER]

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Hold

Enter the OC Hold Status of ”Last”, ”On” or ”Off”. This is the state the OC will go to during a hold status.

State OC contacts are in normal state until the associated setpoint is exceeded, then the OC is activated and the contact states change.

Select ”Inverted” to reverse the normal operating state of the OC (i.e. normally high voltage state is in a low voltage state until the setpoint is exceeded). ”Inverted” OC operation is functional vice versa. All OCs 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.

8.5 Alarm / Clean

(PATH: Menu / Configure / Alarm / Clean)

Enter configuration mode as described in Section 8.1 “Enter Configuration Mode”.

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 c buttons, navigate to ”Use OC #”. Using the  or . keys, select a OC 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,; pH/pNa Rg diagnostics

detect both pH and pNa membrane glasses)

4. Rr diagnostics – pH reference resistance (only for pH sensors; except pH/pNa)

5. Cond cell open (only for analogue cond 2-e / 4-e sensors)

6. Cond cell shorted (only for analogue cond 2-e / 4-e sensors)

7. Channel B disconnected (only for ISM sensors)

8. Dry Cond sensor (only for ISM cond sensors)

9. Cell deviation (only for ISM cond sensors)

10. Electrolyte low (only for ISM amperometric oxygen sensors)

If any of these criteria are set to Yes and the conditions for an alarm are given, the flashing sym-

bol a will be shown in the display, an alarm message will be recorded (see also chapter Messages; PATH: Info/Messages) and the selected OC will be activated. Furthermore an alarm can be indicated by the current output if this has been parameterized (see chapter 8.3 “Analog outputs”; PATH: Menu/Configure/Analog Outputs)

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The conditions for alarms are:

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; pH/pNa Rg

diagnostics detect both pH and pNa membrane glasses)

4. Rr is out of tolerance – for example, coated or depleted reference electrode (only for pH sen-

sors; except pH/pNa)

5. If the conductivity sensor is on air (for example in an empty pipe) (only for resistive Con-

ductivity sensors)

6. If the conductivity sensor has a short cut (only for resistive conductivity sensors)

7. If no sensor is connected on channel B (only for ISM sensors)

8. If the conductivity sensor is on air (for example in an empty pipe) (only for ISM Conductivity

sensors)

9. Cell constant (multiplier) is out of tolerance, i.e. has changed too much compared to the

value thru the factory calibration (only for ISM conductivity sensors)

10. Electrolyte in the membrane body reaches such a low level that the connection between

cathode and reference is disturbed, an immediate action must be taken e.g. exchange and filling the electrolyte.

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.

Each alarm OC 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 “Setpoints”.

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.

Note: There are additional alarms, which will be indicated in the display. See therefore in

chapter 14 “Troubleshooting” the different warning- and alarm lists.

8.5.2 Clean

Configure the OC to be used for the cleaning cycle.

The default value is OC 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 OC state: Normal or Inverted.

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Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will dis-

card the entered values and return to the measurement display screen, selecting Yes will save changes made.

8.6 ISM set up

(available for pH and oxygen ISM sensors)

(PATH: Menu / Configure / ISM Setup)

Enter Configuration mode as described in Section 8.1. “Enter Configuration Mode” and navigate to the menu “ISM set up” by using the  or . key. Press [ENTER]

8.6.1 Sensor monitoring

Select the menu “Sensor Monitoring” by pressing [ENTER].

The sensor monitoring options can be turned on or off and every alarm can be assigned to a

certain output OC. The following options are possible:

Lifetime indicator: The dynamic lifetime indication allows an estimation, when the pH electrode

or the inner body of an amperometric oxygen sensors 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 OC

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) – CIP / SIP / Autoclaving cycles – Reference impedance (only pH)

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 reset if the Lifetime Indicator is not 0 days anymore (e.g. after connecting a new sensor or changing 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 as described in chapter 8.6.5 “Reset ISM counter/timer”.

If the Lifetime Indicator is turned on, in the measuring mode the value will be automatically shown in the display on line 3.

Press [ENTER]

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Time to Maintenance: 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 OC

The time to maintenance can be reset to the initial value by the menu ”Reset ISM Counter Timer” (see chapter 8.6.5 “Reset ISM counter/timer”). For amperometric oxygen sensors, the time to maintenance indicates a maintenance cycle for the membrane and electrolyte.

Press [ENTER]

Activation of the 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 OC

The Adaptive Calibration Timer will be reset to his initial value after a successful calibration. After a successful calibration will also be the alarm reset. If the Adaptive Cal Timer is turned on, the value will be automatically shown in the display on line 4.

Press [ENTER]

The initial value for Time to Maintenance as well as the Adaptive Calibration Timer can be modi-

fied according to the application experience and loaded down to the sensor.

NOTE: By connecting a sensor, the values for Time to Maintenance and/or Adaptive Calibration

Timer are read out by the sensor.

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.

8.6.2 CIP Cycle Limit

Navigate to the menu “CIP Cycle Limit” by using the  and . keys and press [ENTER].

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 OC. The following options are possible:

CIP Max 000 Temp 055 Alarm YES / NO R# choose OC

If the Max setting is on 000, the counter functionality is turned off. The alarm will be reset after exchanging the sensor. For oxygen sensors, the counter can be reset (see chapter 8.6.5 “Reset ISM counter/timer”).

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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 adjustable limit (parameter Temp in °C). If the temperature does not decrease below the defined limit within the next 5 minutes after the 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.

Pressing the [ENTER] key will bring up the Save Changes dialog. Selecting No will discard the entered values, selecting Yes will make the entered values the current ones.

8.6.3 SIP Cycle Limit

Navigate to the menu “SIP Cycle Limit” by using the  and . keys and press [ENTER].

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 OC. The following options are possible:

SIP Max 000 Temp 115 Alarm YES / NO R# choose OC

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 adjustable limit (parameter Temp in °C). If the temperature does not decrease below the defined limit 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.

Pressing the [ENTER] key will bring up the Save Changes dialog. Selecting No will discard the entered values, selecting Yes will make the entered values the current ones.

8.6.4 Autoclaving Cycle Limit

NOTE: The transmitter recognizes the connected ISM sensor and offers this menu only if an auto-

clavable sensor is connected.

Navigate to the menu “AutoClave Cycle Limit” by using the  and . keys and press [ENTER].

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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 OC. The following options are possible:

Autoclave Max 000 Alarm YES / NO R# choose OC

If the Max setting is on 000, the counter functionality is turned off. The alarm will be reset after exchanging the sensor. For oxygen sensors, the counter can also be reset manually (see chapter “Reset ISM counter/timer”).

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.

Pressing the [ENTER] key will bring up the Save Changes dialog. Selecting No will discard the entered values, selecting Yes will make the entered values the current ones.

8.6.5 Reset ISM counter / timer

This menu allows resetting counter and timer functions which cannot be reseted automatically. The adaptive calibration timer will be reseted after a successful adjustment or calibration.

Navigate to the menu “Reset ISM Counter/Timer” by using the  and . keys and press

[ENTER].

If an pH sensor or amperometric oxygen sensor is connected, the menu for resetting the Time To

Maintenance is displayed. Time To Maintenance needs to be reset after the following operations.

pH sensors: manual maintenance cycle on the sensor. oxygen sensor: manual maintenance cycle on the sensor or exchanging of the inner-body or

membrane of the sensor

[Press ENTER]

If an oxygen sensor is connected, the menu for resetting the CIP and SIP counter is displayed.

These counters should be reset after the following operations.

amperometric sensor: exchanging of the inner-body of the sensor.

[Press ENTER]

8.6.6 DLI stress adjustment (only for pH ISM sensors)

Through this menu the calculation of the diagnostic data DLI, TTM and ACT can be adapted to application requirements and/or experience.

NOTE: The function is only available for pH ISM sensors with corresponding firmware versions.

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Navigate to the menu “DLI Stress Adjustment” by using the  and . keys and press [ENTER].

Adjust the Process Stress parameter based on the particular application and/or requirements

Low: DLI, TTM and ACT will be increased approximately 25% compared with “Medium”. Medium: Default value, (equal DLI, TTM and ACT values based on former firmware versions of

the transmitter).

High: DLI, TTM and ACT will be reduced approximately 25% compared with “Medium”.

Pressing the [ENTER] key will bring up the Save Changes dialog. Selecting No will discard the entered values, selecting Yes will make activate entered values.

8.7 Display

(PATH: Menu / Configure / Display)

Enter configuration mode as described in Section 8.1 “Enter Configuration Mode”.

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 or warning 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 back-

light 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 c 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 “Enter Configuration Mode”.

The ”Hold outputs” function applies during the calibration process. If set ”Hold outputs” to Yes, during calibration process the analog output, the output OC 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 OC will be at hold state.

DigitalIn1 / 2 State = Off / Low / High

NOTE: DigitalIn1 is to hold channel A (conventional sensor)

DigitalIn2 is to hold channel B (ISM sensor)

Possible Hold states: Output OC: On / Off (Configuration / Set point) Analog Output: Last / Fixed (Configuration / Analog output) PID OC Last / Off (PID setup/Mode)

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9 System

(PATH: Menu / System)

System

Set Language Passwords

Reset

Set/Clear

Lockout

Set

Date & Time

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 Passwords

(PATH: Menu / System / Passwords)

This menu allows for the configuration of operator and administrator passwords, as well as set-

ting 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.

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9.2.1 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.

9.2.2 Conguring 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.

9.3 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.

9.4 Reset

(PATH: Menu / System / Reset)

This menu allows access to the following options:

Reset System, Reset Meter Cal, Reset Analog Cal.

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9.4.1 Reset system

This menu allows the reset of the meter to the factory default settings (setpoints off, analog out-

puts 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.

9.4.2 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.

9.4.3 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.

9.5 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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10 PID setup

(PATH: Menu / PID Setup)

PID Setup

Tune

Parameters

ModePID A/M

PID Display

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 out-

put 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 further out and proportional limits at the ends of control as shown in the figure below.

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Determine the appropriate settings for each of these control parameters based on the shape of the pH process titration curve.

Controller with Corner Points

–120%

–100%

–80%

–60%

–40%

–20%

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

Error (%)

Direct corner point (value, %)

Set point value

Deadband + value

Reverse corner point (value, %)

10.1 Enter PID setup

While in measurement mode press the  key. Press the  or . key to navigate to the PID Set-

up-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.

10.3 Mode

(PATH: MENU / PID Setup / Mode)

This menu contains the selection of control modes using OCs.

Press [ENTER].

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10.3.1 PID mode

This menu assigns a OC or analog output for PID control action as well as details of their opera-

tion. 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 ”OC” and ”PL”, pulse length. Choose the first OC position as #1 (recommended) and / or the second OC position as #2 (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 OCs #1, #2 can be used for the controlling function.

1st OC 2nd OC

Pulse OC

Conductivity

Controlling concentrating reagent feed

Controlling dilution water

Short (PL) provides more uniform feed. Suggested start point = 30 sec.

pH / ORP Feeding base Feeding acid

Reagent addition cycle: short PL provides more uniform addition of reagent. Suggested start point = 10 sec.

Dissolved Oxygen

Reverse control action

Direct acting control action

Feed cycle time: short PL provides more uniform feed. Suggested start point = 30 sec.

Pulse Frequency – If using a pulse input metering pump, select ”OC” and ”PF”, pulse frequency.

Choose the first OC position as #1 and / or the second OC position as #2 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 OCs #1, #2 can be used for the controlling function.

CAUTION: Setting the pulse frequency too high may cause the pump to overheat.

1st OC 2nd OC Pulse Frequency (PF)

Conductivity

Controlling concentrating chemical feed

Controlling dilution water

Max allowed for the pump used (typically 60–100 pulses / minute)

pH / ORP Feeding base Feeding acid

Max allowed for the pump used (typically 60–100 pulses / minute)

Dissolved Oxygen

Reverse control action

Direct acting control action

Max allowed for the pump used (typically 60–100 pulses / minute)

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10.4 Tune parameters

(PATH: MENU / PID Setup / Tune Parameters)

This menu assigns control to a measurement and sets the setpoint, tuning parameters and non-

linear 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.

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 u 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 u 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 respec-

tive output values from -1 to +1, shown in the figure as -100 to +100%. Press [ENTER].

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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 OC 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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11 Service

(PATH: Menu / Service)

Service

Tech Service

Calibrate Diagnostics

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 fol-

lowing items: Model / Software Revision, Digital Input, Display, Keypad, Memory, Set OC, Read OC, 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 part number, model and the serial number of the transmitter. By using the . key it is possible to navigate forward through this menu and get additional information like the current version of firmware implemented on the transmitter: (Master V_XXXX and Comm V_ XXXX); and – if an ISM sensor is connected – the version of the sensor firmware (Sensor FW V_ XXX) and sensor hardware (Sensor HW XXXX).

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 re-

turn 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 pat-

terns 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 OC

The Set OC diagnostic menu allows to open or close each OC manually. To access OC and 6,

press [ENTER].

0 = open the OC 1 = close the OC

Press [ENTER] to return to Measurement mode.

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11.1.7 Read OC

The Read OC diagnostic menu shows the state of each OC as defined below.

To display OC 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.

11.2 Calibrate

(PATH: Menu / Service / Calibrate)

Enter Service Menu as described in section 11 ”Enter Service Menu”, select Calibrate, and press

[ENTER].

This menu has the options to calibrate the transmitter and the analog outputs and also allows the unlocking of calibration functionality

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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 oxygen, 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 val-

ues 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 dis-

play 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.

11.2.1.2 Current

Current calibration is preformed as a two point calibration.

Navigate to the Calibrate Meter screen and select Channel A.

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Enter the value for Point 1, in milliamps, of the current source connected to the input. The sec-

ond 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 sec-

ond 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.

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.

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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 diagnostic

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.

11.2.1.6 Calibrate analog output signals

Select the Analog Output you wish to calibrate. Each analog output can be calibrated at 4 and

20 mA.

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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 de-

creased 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. Select-

ing No will discard the entered values, selecting Yes will make the entered values the current ones.

11.2.2 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.

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12 Info

(PATH: Info)

Info

Calibration

Data

Messages

Model/Software

Revision

ISM Sensor

Info*

ISM

Diagnostics*

* Only available in combination with ISM sensors

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.

Press [ENTER] to exit from this display.

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 . for ORP calibration data of ISM pH sensors.

Press [ENTER] to exit from this display.

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12.3 Model / Software revision

(PATH: Info/Model/Software Revision)

Selecting Model/Software Revision will display the part number, model and the serial number of

the transmitter.

By using the . key it is possible to navigate forward through this menu and get additional information like the current version of firmware implemented on the transmitter (Master V_XXXX and Comm V_XXXX) and – if an ISM sensor is connected – the version of the sensor firmware (Sensor FW V_XXX) and sensor hardware (Sensor HW XXXX).

The displayed information is important for any Service call. Press [ENTER] to exit from this display.

12.4 ISM sensor info

(available when ISM sensor connected)

(PATH: Info / ISM Sensor Info)

After plugging in an ISM sensor it is possible by using the key A or . to navigate to the Menu

“ISM Sensor Info”.

Press [ENTER] to select the menu.

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

Press [ENTER] to exit from this display.

12.5 ISM sensor diagnostics

(available when ISM sensor connected)

(PATH: Info / ISM Diagnostics)

After plugging in an ISM sensor it is possible by using the key A or . to navigate to the Menu

“ISM Diagnostics”.

Press [ENTER] to select the menu.

Navigate to one of the menus, described in this section, and press [ENTER] again.

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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 re-

mains stored in the sensor for reference and cannot be overwritten.

Act (Actual adjustment): This is the actual calibration dataset which is used for the measure-

ment. This dataset moves to Cal2 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

Cal1 (last calibration/adjustment): This is the last executed calibration/adjustment. This dataset moves to Cal2 and then to Cal3 when a new calibration/adjustment is performed. Afterwards, the dataset is not available anymore.

Cal2 and Cal3 acting in the same way as Cal1.

Definition: Adjustment: The calibration procedure is completed and the calibration values are taken over and used for the measurement (Act) and stated in Cal1. The current values from Act will move to Cal2.

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 Cal1.

The calibration history is used for the estimation of the lifetime indicator for ISM sensors.

Press [ENTER] to exit from this display.

Note: This function requires the correct setting of date and time during calibration and / or adjust-

ment tasks (see chapter 9.5 “Set date & time”).

Sensor monitoring (not available for Cond 4-e sensor)

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 measure-

ment. The lifetime is indicated in days (d) and percentage (%). Fora 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. If you want to bring the bar indicator on the screen, see chapter 8.7.5 “ISM sensor monitoring” 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”.

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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.

Press [ENTER] to exit from this display.

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°CYY/MM/DD

Press [ENTER] to exit from this display.

Note: This function requires the correct setting of date and time of the transmitter, (see

chapter9.6 “Set date & time”)

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

Press [ENTER] to exit from this display.

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

Press [ENTER] to exit from this display.

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

Press [ENTER] to exit from this display.

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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.

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14 Troubleshooting

If the equipment is used in a manner not specified by Mettler-Toledo the protection provided by the equipment may be impaired. Review the table below for possible causes of common problems:

Problem Possible Cause

Display is blank.

– No power to M400. – LCD display contrast set incorrectly. – Hardware failure.

Incorrect measurement readings.

– 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.

Measurement readings not stable.

– 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.

Displayed a is ashing.

– Setpoint is in alarm condition (setpoint exceeded). – Alarm has been selected (see chapter 8.5.1

“Alarm”) and occurred.

Cannot change menu settings. – User locked out for security reasons.

14.1 Cond (resistive) Error messages / Warning- and Alarm list for analog sensors

Alarms Description

Watchdog time-out* SW/System fault

Cond Cell open*

Cell running dry (no measurement solution) or wires are broken

Cond Cell shorted* Short circuit caused by sensor or cable

* According to the parameterization of the transmitter (see chapter 8.5.1 “Alarm”;

PATH: Menu/Configure/Alarm/Clean/Setup Alarm)

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14.2 Cond (resistive) Error messages / Warning- and Alarm list for ISM sensors

Alarms Description

Watchdog time-out* SW/System fault Dry Cond sensor* Cell running dry (no measurement solution) Cell deviation* Multiplier out of tolerance** (depends on sensor model).

* According to the parameterization of the transmitter (see chapter 8.5.1 “Alarm”;

PATH: Menu/Configure/Alarm/Clean/Setup Alarm)

** For further information refer to the sensor documentation

14.3 pH Error messages / Warning- and Alarm list

14.3.1 pH sensors except dual membrane pH electrodes

Warnings Description

Warning pH slope >102% Slope too big Warning pH Slope < 90% 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 resistance changed by more than factor 0.3 Warning pHGls change > 3** Glass electrode resistance changed by more than factor 3

Warning pHRef change < 0.3**

Reference electrode resistance changed by more than factor 0.3

Warning pHRef change > 3** Reference electrode resistance changed by more than factor 3

Alarms Description

Watchdog time-out* SW/System fault Error pH Slope >103% Slope too big Error pH Slope < 80% 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)

* ISM sensors only ** According to the parameterization of the transmitter (see chapter 8.5.1 “Alarm”;

PATH: Menu/Configure/Alarm/Clean/Setup Alarm)

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Transmitter M400/2(X)H, M400G/2XH 87

14.3.2 Dual membrane pH electrodes (pH / pNa)

Warnings Description

Warning pH slope >102% Slope too big Warning pH Slope < 90% Slope too small Warning pH Zero > 8.0 pH Zero offset too big Warning pH Zero < 6.0 pH Zero offset too small Warning pHGls change < 0.3* Glass electrode resistance changed by more than factor 0.3 Warning pHGls change > 3* Glass electrode resistance changed by more than factor 3 Warning pNaGls change< 0. 3* Glass electrode resistance changed by more than factor 0.3 Warning pNaGls change > 3* Reference electrode resistance changed by more than factor 3

Alarms Description

Watchdog time-out SW/System fault Error pH Slope >103% Slope too big Error pH Slope < 80% Slope too small Error pH Zero > 9.0 pH Zero offset too big Error pH Zero < 5.0 pH Zero offset too small Error pNa Gls Res > 2000 MΩ* Glass electrode resistance too big (break) Error pNa Gls Res < 5 MΩ* Glass 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)

* According to the parameterization of the transmitter (see chapter 8.5.1 “Alarm”;

PATH: Menu/Configure/Alarm/Clean/Setup Alarm)

14.3.3 ORP messages

Warnings* Description

Warning ORP ZeroPt > 30 mV Zero offset too big Warning ORP ZeroPt < – 30 mV Zero offset too small

Alarms* Description

Watchdog time-out SW/System fault Error ORP ZeroPt > 60 mV Zero offset too big Error ORP ZeroPt < – 60 mV Zero offset too small

* ISM sensors only

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Transmitter M400/2(X)H, M400G/2XH 88

14.4 Amperometric O2 Error messages / Warning- and Alarm list

14.4.1 High level oxygen sensors

Warnings Description

Warning O

Slope < – 90 nA Slope too big

Warning O

Slope > – 35 nA Slope too small

Warning O

ZeroPt > 0.3 nA Zero offset too big

Warning O

ZeroPt < – 0.3 nA Zero offset too small

Alarms Description

Watchdog time-out* SW/System fault Error O

Slope < –110 nA Slope too big

Error O

Slope > – 30 nA Slope too small

Error O

ZeroPt > 0.6 nA Zero offset too big

Error O

ZeroPt < – 0.6 nA Zero offset too small

Electrolyte Low* Too low level of electrolyte

* ISM sensors only

14.4.2 Low level oxygen sensors

Warnings Description

Warning O

Slope < – 460 nA Slope too big

Warning O

Slope > – 250 nA Slope too small

Warning O

ZeroPt > 0.5 nA Zero offset too big

Warning O

ZeroPt < – 0.5 nA Zero offset too small

Alarms Description

Watchdog time-out* SW/System fault

Error Install O

Jumper

In case of using InPro 6900 a jumper has to be installed (see chapter: Connection of Sensor – Dissolved Oxygen)

Error O

Slope < – 525 nA Slope too big

Error O

Slope > – 220 nA Slope too small

Error O

ZeroPt > 1.0 nA Zero offset too big

Error O

ZeroPt < – 1.0 nA Zero offset too small

Electrolyte Low* Too low level of electrolyte

* ISM sensors only

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Transmitter M400/2(X)H, M400G/2XH 89

14.4.3 Trace oxygen sensors

Warnings Description

Warning O

Slope < – 5000 nA Slope too big

Warning O

Slope > – 3000 nA Slope too small

Warning O

ZeroPt > 0.5 nA Zero offset too big

Warning O

ZeroPt < – 0.5 nA Zero offset too small

Alarms Description

Watchdog time-out SW/System fault Error O

Slope < – 6000 nA Slope too big

Error O

Slope > – 2000 nA Slope too small

Error O

ZeroPt > 1.0 nA Zero offset too big

Error O

ZeroPt < – 1.0 nA Zero offset too small

Electrolyte Low* Too low level of electrolyte

* ISM sensors only

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Transmitter M400/2(X)H, M400G/2XH 90

14.5 Warning- and Alarm indication on the display

14.5.1 Warning indication

If there are conditions, which generate a warning, the message will be recorded and can be selected through the menu Messages (PATH: Info / Messages; see also chapter 12.1 “Messages”). According to the configuration of the transmitter the hint ”Failure – Press ENTER” will be shown at line 4 of the display, if a warning or alarm has occurred (see also chapter 8.7 “Display”; PATH: Menu/Configure/Display/Measurement).

14.5.2 Alarm indication

Alarms will be shown in the display by a flashing symbol a and recorded through the menu point Messages (PATH: Info/Messages; see also chapter 12.1 “Messages”).

Furthermore the detection of some alarms can be activated or deactivated (see chapter 8.5 “Alarm/Clean”; PATH: Menu/Configure/Alarm/Clean) for an indication on the display. If one of these alarms occurs and the detection has been activated, the flashing symbol a will be shown on the display and the message will be recorded through the menu Messages (see chapter 12.1 “Messages”; PATH: Info / Messages).

Alarms which are caused by a violation of the limitation of a setpoint or the range (see chapter

8.4 “Setpoints”; PATH: Menu/Configure/Setpoint) will also be shown by a flashing symbol a

and recorded through the menu Messages (PATH: Info/Messages; see also chapter 12.1 “Messages”).

According to the parameterisation of the transmitter the hint ”Failure – Press ENTER” will be shown at line 4 of the display, if a warning or alarm has occurred (see also chapter 8.7 “Display”; PATH: Menu/Configure/Display/Measurement).

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Transmitter M400/2(X)H, M400G/2XH 91

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 1/2DIN models 52 500 212

Panel Mount Kit for 1/2DIN models 52 500 213

Protective Hood for 1/2DIN models 52 500 214

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Transmitter M400/2(X)H, M400G/2XH 92

16 Specications

16.1 General specications

Conductivity / resistive Specifications

Range 0.01 cm

–1

constant sensor 0.002 to 200 uS/cm (5000 Ωxcm to 500 MΩ xcm)

Range 0.1 cm

-1

constant sensor 0.02 to 2000 uS/cm (500 Ω x cm to 50 MΩ x cm)

Range lOcnr

constant sensor 10 to 40,000 uS/cm (25 Ω x cm to 100 KΩ x cm) Display range for 2-e sensor 0 to 40,000 mS/cm (25 Ω x cm to 100 MΩ x cm) Display range for 4-e sensor 0.01 to 650 mS/cm (1.54 Ω x cm to 0.1 MΩ x cm)

Chemical concentration curves

NaCl: 0-26% @ 0 °C to 0-28% @ +100 °C NaOH: 0–12% @ 0 °C to 0–16% @ +40 °C

to 0–6% @ +100 °C

HCl: 0–18% @ –20 °C to 0–18% @ 0 °C

to 0–5% @ +50 °C

HNO3: 0–30% @ –20 °C to 0–30% @ 0 °C

to 0–8% @ +50 °C

H2SO4: 0–26% @ –12 °C to 0–26% @ +5 °C

to 0–9% @ +100 °C H3PO4: 0–35% @ +5 °C to + 80 °C User dened concentration table (5x5 matrix)

TDS ranges NaCl, CaCO3

Sensor maximum distance

analog: 61 m (200 ft); 15 m (50 ft with 4-E sensors) ISM: 80 m (260 ft)

Cond/Res accuracy**

±0.5% of reading or 0.25 Ω, whichever is greater, Up to 10 MΩ-cm

Cond/Res repeatability** ±0.25% of reading or 0.25 ohm, whichever is greater Cond/Res resolution auto/0.001 /0.01 /0.1 /1 (can be selected) Temperature input* Pt1000/Pt100/NTC22K Temperature measuring range -40 to +200.0 °C (-40 to 392 °F) Temperature resolution auto/0.001 /0.01 /0.1 /1 K (°F), (can be selected)

Temperature accuracy**

±0.25 K (±0.45 °F) within -30 to +150 °C ±0.50 K (±0.90 °F) outside

Temperature repeatability** ±0.13 K (±0.23 °F)

* Not required on ISM sensors ** For analog input signal (ISM input signal causes no additional error).

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Transmitter M400/2(X)H, M400G/2XH 93

pH Specifications:

pH range –2.00 to 16.00 pH

Sensor maximum distance

Analogue: 10 to 20 m (33 to 65 ft) depending on sensor ISM: 80 m (260 ft)

pH resolution auto / 0.01 / 0.1 / 1 (can be selected) pH accuracy** ± 0.02 pH mV range –1500 to 1500 mV mV resolution auto / 0.01 / 0.1 /1 mV mV accuracy ±1 mV Temperature input* Pt1000 / Pt100 / NTC22K Temperature measuring range – 30 to 130 °C (– 22 to 266 °F) Temperature resolution auto / 0.001 / 0.01 / 0.1 / 1 K (°F), (can be selected) Temperature accuracy** ± 0.25 K Temperature repeatability** ± 0.13 K (± 0.23 °F)

* Not required on ISM sensors ** For analog input signal (ISM input signal causes no additional error).

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Transmitter M400/2(X)H, M400G/2XH 94

Available Buffer Sets: Standard buffers

MT-9 buffers, MT-10 buffers, NIST Technical Buffers, NIST Standard Buffers (DIN 19266:2000–01), JIS Z 8802 buffers, Hach buffers, CIBA (94) buffers, Merck Titrisols-Reidel Fixanals, WTW buffers

Dual membrane electrodes pH buffers (pH/pNa)

Mettler-pH/pNa buffers (Na+ 3.9M)

Oxygen amperometric

Measurement parameters

– Dissolved oxygen: Saturation or concentration and temperature – Oxygen in gas: Concentration and temperature

Current range 0 to7000nA for analog sensors

Oxygen measuring ranges

– Dissolved oxygen: Saturation 0 to 500 % air,

0 to 200 % O2

Concentration: 0ppb (µg/L)

to 50.00 ppm (mg/L)

– In gas: 0 to 9999 ppm O2 gas,

0 to 100 vol % O2

Oxygen accuracy*

– Dissolved oxygen Saturation: ± 0.5% of the measured value

or ± 0.5%, depending on which is larger.

Concentration at high values: ± 0.5% of the

measured value or ± 0.050 ppm / ± 0.050 mg/L, depending on which is larger.

Concentration at low values: ± 0.5% of the

measured value or ± 0.001 ppm / ± 0.001 mg/L, depending on which is larger.

Concentration at traces values: ± 0.5% of

the measured value or ± 0.100 ppb / ± 0.1 µg/L, depending on which is larger.

– In gas ± 0.5 % of the measured value or ± 5 ppb,

depending on which is larger for ppm O2 gas.

± 0.5% of the measured value or ± 0.01%,

depending on which is larger for vol % O2.

Resolution current 6 pA

Polarization voltage

– 1000 to 0 mV for analog sensors

– 550 mV or – 674 for ISM sensors (congurable) Temperature input NTC 22 kΩ, Pt1000 Temperature

compensation

Automatic

Temperature measuring range

–10 to 80 °C

Temperature accuracy* ± 0.25 K in the range of – 10 to + 80 °C (14 to + 176°F) Max. length sensor

cable

Analog: 20 m (65 ft); ISM 80 m (260ft)

Calibration

1-point (slope or offset) calibration, process calibration (slope or

offset) calibration

* For analog input signal (ISM input signal causes no additional error)

Page 95

Transmitter M400/2(X)H, M400G/2XH 95

16.2 Electrical specications

Number of current outputs 2

Current outputs

loop current 4 to 20 mA, galvanically isolated up to 60V from input and from earth / ground, protected against wrong polarity, feeding voltage 14 to 30VDC

Measurement error through analog outputs

<± 0.05 mA over 4 to 20mA

Analog output conguration Linear, Bi-linear, Logarithmic, Autoranging Display Backlit LCD, 4 lines Running capacity Ca. 4 days Keypad 5 tactile feedback keys

Languages

8 (english, german, french, italian, spanish,

portuguese, Russian and japanese) PID process controller Pulse length, pulse frequency Cycle time Ca. 1 sec Hold input / Alarm contact Yes / Yes (alarm delay 0 to 999 s)

Connection terminals

Spring cage terminals, appropriate for wire cross

section 0.2mm

to 1.5mm2 (AWG 16 – 24)

Digital outputs 2 open collector (OC), 30 VDC, 100 mA, 0.9W

Digital input

2, galvanically isolated up to 60V from output,

analog input and ground/earth with switching limits

0.0 VDC to 1.00 VDC inactive

2.30 VDC to 30.00 VDC active Analog input 4 to 20 mA (for pressure compensation) Alarm delay 0 – 999 s

16.3 Mechanical specications

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 1.50 kg (3.3 lb) Insulation / Rating IP 66 / NEMA4X

* H = Height, W = Width, D = Depth

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Transmitter M400/2(X)H, M400G/2XH 96

16.4 Environmental specications

Storage temperature – 40 to 70 °C (– 40 to 158 °F) Ambient temperature operating range – 20 to 60 °C (-4 to 140 °F) Relative humidity 0 to 95%

EMC

According to EN 61326-1 (general requirements) Emmission: Class B

Immunity: Class A Certicate CE Material Aluminium die cast

Hazardous areas

M400/2H: cFMus Class I Division2*, NEPSI Ex

Zone2

M400/2XH, M400G/2XH: ATEX /IECEx Zone 1*,

cFMus Class I Division1*, NEPSI EX Zone 1*

* Pending

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Transmitter M400/2(X)H, M400G/2XH 97

17 Default table

Common

Parameter Sub parameter Value Unit

Alarm OC 2

delay 1 hysterseis 0 state inverted Power failure No Software tailure No ChB disconnected Yes

Clean OC 1

Hold mode Hold interval 0 Clean time 0 delay 0

hysteresis 0 Hold outputs Yes DigitalIn off Lockout no ISM monitor Lifetime indicator Yes Alarm Yes

Time to maint Yes Alarm Yes

Adapt Cal timer Yes Alarm Yes

CIP cycle counter 100 Alarm Yes

SIP cycle counter 100 Alarm Yes

Autoclave cycle counter 0 Alarm No

OC None language English

Passwords

administrator 00000

operator 00000

All OCs

delay 10 sec

hysteresis 5

For measurement unit pH, mV, ˚C, the same unit. For other measurement

unit, is %. state normal hold mode Last Value

All analog out

mode 4 – 20 mA type normal alarm 22.0mA hold mode last value Aout 1 Damping 1 sec

Page 98

Transmitter M400/2(X)H, M400G/2XH 98

Parameter Sub parameter Value Unit

Channel X a pH pH

b temperature °C c None d None

Temperature soure (analog sensor) Auto pH buffer Mettler-9 Drift Control Auto

7.0 (ISM sesnro reading fromsensor)

STC 0.000 pH/°C Fix CalTemp No Cal constants (for Analog sensor) pH S=100.0%,Z=7.000pH

temperature M=1.0, A=0.0

Cal constants (for ISM sensor) Read from sensor Resolution pH 0.01 pH

Temperature 0.1 °C

Analog outputs 1 a

2 b

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 OC None

Set point 2 measurement b

Type off OC None

Alarm

Rg diagnostics Yes Rr diagnostics Yes

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Transmitter M400/2(X)H, M400G/2XH 99

pH/pNa

Parameter Sub parameter Value Unit

Channel X a pH pH

b temperature °C c None d None

Temperature soure (analog sensor) Auto pH buffer Na+3.9M Drift Control Auto IP Reading form sensor pH STC 0.000 pH/°C Fix CalTemp No Cal constants Read from sensor Resolution pH 0.01 pH

Temperature 0.1 °C

Analog outputs 1 a

2 b

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 OC None

Set point 2 measurement b

Type off OC None

Alarm Rg diagnostics Yes

Page 100

Transmitter M400/2(X)H, M400G/2XH 100

Oxygen

Parameter Sub parameter Value Unit

Channel X a O2

%Air (O2 low:ppb)

b temperature °C

c O2(dual channel)

%Air (O2 low:ppb)

d temperature(dual channel)

°C

Temperature soure (analog sensor) Auto CalPres) 759.8 mmHg ProcPres) 759.8 mmHg ProcCalPres CaPres Drift control Auto Salinity 0.0 g/Kg Humidity 100 % Umeaspol Read form sensor Ucalpol -674 mV

Cal constants (for Analog sensor)

O2 high: S=-70.00nA,Z=0.00nA O2 low: S=-350.00nA,Z=0.00nA temperature M=1.0, A=0.0

Cal constants (for ISM sensor) Read from sensor Resolution O2 0.1 %Air

1 ppb

Temperature 0.1 °C

Analog outputs 1 a

2 b

O2 value 4 mA 0

%Air (O2

low:ppb)

value 20 mA 100

%Air (O2

low:ppb)

Temperature value 4 mA 0 °C

value 20 mA 100 °C

Set point 1 measurement a

type off OC None

Set point 2 measurement b

Type off OC None

Alarm

Electrolyte low (ISM sensor)

Yes