Hach POLYMETRON 9125 Operator's Manual

Operator Manual

POLYMETRON 9125

Conductivity/resistivity measurement

221=191=025 - Revision L - 23/02/2007

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Transmitter 9125 – Conductivity / resistivity measurement

621=191=025 Issue L Hach Ultra Analytics 11/2005

This instrument conforms to the European Directives:

- 89/336/CEE modified by the directive

93/68/CEE

- 73/23/CEE modified by the directive

93/68/CEE

Warning !

There are no user-serviceable parts in either the transmitter or sensor. Only Hach
Ultra Analytics personnel or their authorized representative should attempt repair of
the system and only components expressly approved by the manufacturer should be
used. Any attempt to repair the instrument in contradiction of these guidelines may
result in damage to the instrument and injury to the person making the repair. It will
also void the warranty and may compromise the safe operation, electrical integrity or
CE compliance of the instrument.

Note:

This equipment has been tested and found to comply with the limits for Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his
own expense.

Precautionary Labels :

Read all labels and tags attached to the instrument. Personal injury or damage to
this instrument could occur if not observed.

This symbol, if noted on the instrument, references the instruction
manual for operation and / or safety information.

Electrical equipment marked with this symbol may not be disposed of in
European public disposal systems after 12 August of 2005. In conformity
with European local and national regulations (EU Directive 2002/96/EC),
European electrical equipment users must now return old or end-of life
equipment to the Producer for disposal at no charge to the user.

Note : For return for recycling, please contact the equipment producer
or supplier for instructions on how to return end-of-life equipment for
proper disposal.

Important document. Retain with product records.

!

Transmitter 9125 – Conductivity / resistivity measurement

Page 1

Table of contents

1.

General presentation of the conductivity / resistivity measure

system ................................................................................................. 3

Presentation of the 9125 transmitter ................................................................................3

Introduction....................................................................................................................... 4

Conductivity measurement...............................................................................................4

Characteristics.................................................................................................................. 6

2. Installation of the transmitter.......................................................... 11

Unpacking of the transmitter 9125 ................................................................................. 11

Advice for installation......................................................................................................11

Dimensions..................................................................................................................... 12

Mounting types ............................................................................................................... 13

3. Electric connections ........................................................................ 17

Electronic board lay-out in the 9125 transmitter enclosure ............................................17

Main connection .............................................................................................................20

Relays connections ........................................................................................................21

Sensor connections........................................................................................................22

4. Using the 9125 transmitter ..............................................................23

Utilization rules for the menus ........................................................................................ 23

Modification of a value.................................................................................................... 24

Measures display............................................................................................................24

Main display....................................................................................................................25

Display options ............................................................................................................... 25

Display options ............................................................................................................... 26

Choice of the language.....................................................................................26

S/DISPLAY Menu.............................................................................................26

UNIT choice.................................................................................................................... 27

TDS choice .....................................................................................................................27

Temperature UNIT choice .............................................................................................. 27

Concentration measure (TDS)........................................................................................ 28

Limits of the TDS measure .............................................................................................28

5. Programming the transmitter.......................................................... 29

Main menu...................................................................................................................... 29

Calibration Menu ............................................................................................................30

Conductivity calibration.....................................................................................30

Select to "Programming" and press enter. ...........................................30

Type of calibration............................................................................................31

2 point calibration .................................................................................32

Transmitter 9125 – Conductivity / resistivity measurement

Page 2

1 point calibration .................................................................................32

Execution of a 2 point calibration .........................................................33

TDS measure calibration..................................................................................34

Temperature electric calibration / Resistor adjust................................35

Process calibration...............................................................................35

PARAMETERS Menu..................................................................................................... 36

HISTORIC Menu ............................................................................................................36

MAINTENANCE Menu ...................................................................................................37

PROGRAMMING Menu.................................................................................................. 38

S/MEASURE Menu ..........................................................................................39

PROBE.................................................................................................39

TEMPERATURE COMPENSATION....................................................40

TDS coefficient adjusting......................................................................40

S/mA OUTPUTS Menu.....................................................................................41

OUTPUT 1/2.........................................................................................42

S/ALARMS menu .............................................................................................43

ALARM 1/2 (limit).................................................................................44

ALARM 1/2 (USP) ................................................................................44

USP mode............................................................................................45

ALARM 3 (Alarm system).....................................................................47

ALARM 4 (Timer)..................................................................................47

S/SPECIAL PROG. Menu ................................................................................48

TEST ....................................................................................................48

S/RS485 Menu.................................................................................................49

SERVICE Menu.............................................................................................................. 50

S/POLARIZATION Menu..................................................................................51

CABLE CAP.........................................................................................51

TEST ....................................................................................................51

S/AVERAGE Menu........................................................................................... 52

S/CODE Menu..................................................................................................53

S/SOFT ISSUE Menu.......................................................................................54

S/DEFAULT/VALUES Menu.............................................................................54

S/mA ADJUST Menu........................................................................................55

S/FACTORY Menu...........................................................................................55

6. Polarization ....................................................................................... 57

Electric representation of the probe and its cable ..........................................................57

Frequency adjustment according to the conductivity measurement ..............................58

Automatic adjustment of the frequency .......................................................................... 59

7. Error messages ................................................................................ 61

Appendix A : Default values .................................................................A1

Appendix B : Spare parts list ...............................................................B1

Transmitter 9125 – Conductivity / resistivity measurement

Page 3

1. General presentation of the conductivity /
resistivity measure system

Presentation of the 9125 transmitter

The 9125 transmitter and associated measuring
sensors has been designed for measuring and
continuous control of conductivity and resistivity (with
possibility of temperature measurement) in industrial
process.

Note :
The programming is displayed in 6 languages. To

modify this parameter see § 4 " Display Menu –
Choice of the language ".

Transmitter 9125 – Conductivity / resistivity measurement

Page 4

Introduction

The 9125 transmitter is a user-friendly instrument
(installation, programming), equipped with a
microprocessor it can be configured to correspond to
any application in the following sectors :

x drinking water,
x waste water,
x process (chemistry, paper mills, sugar mills...),
x measurement in pure/ultrapure water (energy

power plants, semiconductor industry, chemistry).

The 9125 transmitter should be connected to a probe
via a cable.

Conductivity measurement

The electric conductivity measures the transport of
electric charges in any field. In metal conductors, the
current flows by transport of electrons, whereas in
solutions, it flows by transport of ions such as Na+ and
Cl- which ensure the transport of charges. The higher
the transport of charges is, the greater is the
conductance of the solution.

Conductivity is the capacity a solution has to
conduct current.

In solution, conductivity is much more complicated
than in conductors because several species ensure
the transport of charges. For instance, in drinking
water the conductive species registered are sodium,
calcium, magnesium, ferrous cations, ferrites,
phosphates and nitrate ions. For slightly concentrated
solutions, the concentration of H

+

protons and hydroxyl

OH

-

ions (stemming from the weak dissociation of the

water [H

+

] = [OH-] = 10

-7

mol/l to 25°C) can no
longer be neglected in the presence of the product,
this therefore leads to a non-linear variation
Conductivity/Concentration.

Transmitter 9125 – Conductivity / resistivity measurement

Page 5

Mobility of these species in an electric field depends
naturally on their size, weight, transport charge,
viscosity of the field. The greater the concentration of
the species is, the greater the interactions between
these ionic species is.

Principle of electrolytic conductivity

Ohm’s law specifies that the current circulating in the
dipole is proportional to the difference in potential and
resistance of this dipole :

I = E / R

The resistance of a homogenous environment
depends on the geometry of the resitivity
(characteristic of the material) :

R = r . 1/K

Where "r" is the resistivity in Ohm.cm and "K", the cell
constant in cm-1.

Transmitter 9125 – Conductivity / resistivity measurement

Page 6

Characteristics

The 9125 is equipped with an input measurement
channel : a conductivity probe, 2 electrodes and
inductive may be connected as well as a temperature
Pt100 or Pt1000 probe.

The 9125 is also equipped with 2 analogue outputs (0
or 4-20 mA).

Options available on request

x board with 4 relays
x RS485 board

MAIN SPECIFICATIONS

Package

Delivered with instruction manual, 4 cable glands and
2 mounting screws and a specifications conformed
certificate

Maintenance

No particular maintenance required. Clean the
instrument with a soft tissue and without any
aggressive agent

OPERATING CONDITIONS

Ambient temperature

-20°C...+60°C

Relative humidity

10...90%

Power supply voltage
fluctuation

r 10 %

Over voltage category

2

Pollution degree

2 (as CEI 664)

Altitude

< 2000 m

Measurement category

I (overvoltage less than 1500 V)

ELECTRIC CHARACTERISTICS

Power supply voltage

x Standard version (r 10 %) :

- 100 V ... 240 VAC 50/60 Hz

x Low voltage version:

- 13...30 VAC 50/60 Hz

- 18...42 VDC

Transmitter 9125 – Conductivity / resistivity measurement

Page 7

Connections

2,5 mm2 screw terminals

Fuse

5 x 20 mm Cartridge
T2AL - 250 V

Consumption

25 VA

European standards

EN 61326-1997 and EN61326 A1-1998 (Industrial level
for immunity)

EN- 61010-1

UL and CSA agreement

File E226594

MECHANICAL CHARACTERISTICS

Dimensions

144 x 144 x 150 mm

Weight

2 Kg

Material

Housing : Polyester coated aluminium
Screws : stainless steel

Tightness

IP65

Mounting types

Wall
Pipe
Panel

Cable glands

2 x PG13.5
2 x PG11

PERFORMANCE

2 electrode probe

Cell constant
0,01 cm-1
0,1 cm-1
1 cm-1

Conductivity range
0,01 PS/cm...200 PS/cm
0,10 PS/cm...2 mS/cm

1 PS/cm....20 mS/cm

2 electrode probe

Cell constant
0,01 cm

-1

0,1 cm

-1

1 cm

-1

Resistivity range
5 k:.cm...100 M:.cm
0,5 k:.cm...10 M:.cm
50 :.cm...1 M:.cm

Inductive probe

Cell constant
1 cm-1
2,35 cm-1
10 cm-1

Conductivity range
100 PS/cm...1 S/cm
200 PS/cm...2 S/cm
1 mS/cm...10 S/cm

Transmitter 9125 – Conductivity / resistivity measurement

Page 8

Inductive probe

Cell constant
1 cm

-1

2,35 cm

-1

10 cm

-1

Resistivity range
1:.cm...10 k:.cm
0,5 :.cm...5 k:.cm
0,1 :.cm...1 k:.cm

Ambient temperature
range

-20°C...+200°C (-4…392 °F)

Display resolution

Conductivity/resistivity : automatic point drift (min.
resolution 0.001 PS/cm)
< 0.1 °C

Accuracy

Inductive :
K=1 : r 2% of the displayed value or

r0,002 mS

K=2,35 : r 2% of the displayed value or

r0,004 mS

K=10 : r 2% of the displayed value or

r0,02 mS

2 electrode : r 1% of the displayed value

temperature < r 0.4 °C

Temperature sensor

Pt 100 / Pt 1000

Temperature
compensation

- No

- Automatic

- Manual

Automatic temperature
compensation range

-20 ... 200 °C

-4 ... 392 °F

Temperature compensation
range

Linear
Non linear :

- ultrapure water, HCl and NaCl

Sensor types

- 2 electrode sensor

- Inductive sensor

Cable length

100 m maximum

CALIBRATION

Conductivity calibration
type

- Electric

- 2 points

- 1 point

Slope matching

50 ... 150 %

Transmitter 9125 – Conductivity / resistivity measurement

Page 9

Temperature calibration

r 20 °C ( r 36 °F)

ANALOGUE OUTPUT

Output signals

2 galvanicly outputs insulated

Allocation

Conductivity/resistivity/temperature

Type

0 ... 20 mA
4 ... 20 mA

Mode

Linear
Dual
Logarithmic

Maximum load

800 :

Accuracy

0.1 mA

ALARMS

Alarm number

4

Function

- Standard limits

- Limits according to USP standard

- Alarm system

- Timer

Hysteresis

0 ... 10%

Temporisation

0 ... 999 s

Breaking power
(resistive load)

250 V AC, 3A max
100 V DC, 0,5A max

Use a cable (rated 105°C and AWG22 to 14). The
external cable insulation should be cut as close as
possible from the terminal block.

RS485

Baud rate

300 ... 19200 bauds

Insulation

Galvanic

Station number

32 max

Transmitter 9125 – Conductivity / resistivity measurement

Page 10



PROGRAMMING

Language

French
English
German
Italian
Spanish
Dutch

Display

Icones + graphic zone (80*64 pixels)

Protection codes

Calibration
Programming
Service

Transmitter 9125 – Conductivity / resistivity measurement

Page 11

2. Installation of the transmitter

Unpacking of the transmitter 9125

Inspect the package at the reception to detect an
eventual damage due to the transport. Make sure the
package contents are not damaged.

Check if the package corresponds to your order :

x quantity delivered,
x type of instrument and version accordingly to the

instruction plates,

x accessories : 4 cable glands and 2 mounting

screws + flanges,

x instruction manual,
x certificate of conformity to specifications.

Advice for installation

Choose a site where :

x vibrations are not too excessive,
x supply relays or commuters are away,
x maintenance will be easy.

Note :
Information : It is preferable to mount the

instrument above eye level, allowing an
unrestricted view of the front panel displays and
controls.

Transmitter 9125 – Conductivity / resistivity measurement

Page 12

Dimensions

(Dimensions are in mm [inches]).

Fig. 2.1 Transmitter

9125
dimension

Transmitter 9125 – Conductivity / resistivity measurement

Page 13

Mounting types

3 possibilities to mount the instrument (use of the red
clamping bow) :
The transmitter housing conforms to norm DIN 43700.

Panel mounting :

Panel cutting : 138 x 138 mm
Front panel dimensions : 144 x 144 mm

x 2 screws



4 mm lg 16 flat head (provided) for

panel thickness 0 to 4 mm

x 2 screws



4 mm lg 20 flat head (provided) for

panel thickness 4 to 8 mm

Fig 2.2 Panel mounting

Panel cutting 138 x 138 mm

(5.4 in. x 5.4 in.)

Front panel dimensions 144 x 144 mm

(5.8 in. x 5.8 in.)

Thickness panel Inferior to 8 mm

Transmitter 9125 – Conductivity / resistivity measurement

Page 14

Wall mounting :

x 2 screws  4 mm lg 60 flat head (not

provided)/ 80 mm center distance

Fig. 2.3 Wall mounting

Transmitter 9125 – Conductivity / resistivity measurement

Page 15



Pipe mounting :

x  2" maximum - 2 screws  4 mm lg 60

(provided)

Fig. 2.4 Vertical mounting

Fig. 2.5 Horizontal mounting

Transmitter 9125 – Conductivity / resistivity measurement

Page 17

3. Electric connections

Electronic board lay-out in the 9125 transmitter
enclosure

________________________________________________________________________

Fig. 3.1 Electronic board lay-out

1. Terminal block 4-20 mA

2. CPU board

3. RS485 board (option)

4. Relay board (option)

5. Choice between an inductive (all 4 switches on position I) or a 2 electrode
(Kohlraush) probe (all 4 switches on position K)

6. Programmed EEPROM

7. Conductivity module

8. Power supply board

9. Program update connector

7



1



2



3



4



56



8



9



Transmitter 9125 – Conductivity / resistivity measurement

Page 18

________________________________________________________________________

Fig. 3.2 9125 shielded plate

Electric connections are realised on the terminal inside
the housing. Put the cables into the appropriated
openings.

x The main supply and relay cables should be

dispatched via the openings behind the shielded
plate. To remove the plate, unscrew the fixing
screw on the left side of the plate.

x Sensor and mA output cables should be

dispatched via the openings provided on top of the
shielded plate.

x Check the creeping of the cables when opening

the transmitter.

x It is required to use shielded cables. The shielding

should be connected to the earth central shielding.

80°.

Transmitter 9125 – Conductivity / resistivity measurement

Page 19

________________________________________________________________________

Fig. 3.3 Power and relays connections

1. Terminal block connections

Analogue outputs

4-20 mA

2. Terminal block connections

"option RS 485"

3. Terminal block connections

of the conductivity sensors

4. Earth

132

4

4-20 mA

Sensor

Transmitter 9125 – Conductivity / resistivity measurement

Page 20

Main connection

Electrical connection should be performed only by
qualified personnel. For the base model, the power
supply accepts 100-240 VAC r 10 %, (50/60 Hz)
without changes in configuration. Before switching the
transmitter, make sure the site voltage corresponds to
the instrument voltage indicated on the identification
plate. The terminal block for power connections can be
lifted from its header for easier installation.

For safety reasons, it is required to observe the
precautions below :

x Use a three wire mains supply cable (2 core + PE)

with a cross section between 0.35 and 2 mm²
(AWG 22 to 14) rated at 105°C minimum. The
external cable insulation should be cut as close as
possible from the terminal block.

x The instrument should be connected to the power

supply by means of a breaker located close to the
instrument and be identified. The supply shall be
fitted with an overcurrent protection device rated at
20 Amp maximum.

x This breaker should switch off phase and neutral in

case of electrical problems or when the user wish
to service the instrument. However the power
supply earth must always be connected.

x Cabling should be specified for a minimum of 80°C

(176°F).

Note :
Before servicing the instrument, ensure that the

power supply is switched off.

Transmitter 9125 – Conductivity / resistivity measurement

Page 21

Relays connections

The 9125 is equipped with 4 relays. Relay S4may be
configured as a temporized relay. The nominal value
of the cutoff current of each relay is 2A for 250 Vca or
0,5 A for 100 Vcc. Cabling should be specified for a
minimum of 80°C (176°F). See figure 3.1 page 17 for
connection location.

x S1 is located on the upper part of the terminal and

S2, S3 and S4 under. Each relay is connected to a
2 separated contact terminal, which may be
removed to facilitate the installation.

x The relay operation is configured in the software

but the relay switches are always open when the
unit is switched off.

Output current connections (mA output)

The transmitter has two analogue outputs, which may
be set in 0-20 or 4-20 mA and which are galvanicly
insulated from the controller. Maximum load for each
output is 800 :. See Figure 3.1 page 17 for the
terminal location.

x Use a signal cable with shielded twisted pair with

the earth shielding in the transmitter.

x Connect the cable to the terminal according to the

drawing on the shielded plate.

Transmitter 9125 – Conductivity / resistivity measurement

Page 22

Sensor connections

The conductivity sensors have a double shielding, the
first one is connected the CPU board, the second one
(external) is connected to earth on the shielded plate.

Execute the connections according to the following
table :

Kohlrausch

Inductives

TEMP+

blue

green

TEMP-

black

yellow

IN

white

white

OUT

red

brown

GND

internal
shield

internal shield
(X2)

external
shield

external
shield

x Use only Hach Ultra Analytics supplied cables.

Using other types of cables does not ensure the
conformity to the electromagnetic compatibility
standards.

Transmitter 9125 – Conductivity / resistivity measurement

Page 23

4. Using the 9125 transmitter

Utilization rules for the menus

The user interface of the 9125 transmitter is made of a
display screen and 4 keys.

The (Esc) key is used to go back to the previous
menu.

The (Enter) key is used to validate the selections and
the data.

Both middle keys, right and left function keys, are
defined according to the words and symbols which are
displayed above each function key.

Modify a parameter

Select

Choose a menu

Main

Go back to the main display principal

Menu

Display the main menu

Disp2

Display screen 2

Disp3

Display screen 3

OK

Validate the measure during a calibration

-

Increase a value

+

Decrease a value

26.8

mS/cm

25.0°C

Disp2 Menu

S1

S2

S3

S4

Transmitter 9125 – Conductivity / resistivity measurement

Page 24

Modification of a value

The highlighted digit may be modified with the key

. Each digit can be validated by pressing

ENTER. Repeat both operations for each digit.

Note :

x

If you do not use the display for at least 10

minutes, the instrument returns to the
measuring mode except for the calibration and
maintenance mode.

x

An access code may be required for the

calibration, programming and service menu (see
CODE menu).

Measures display

Measures display allow to display measures and state
of the device. There are three :

Reference Description

c

Main display

d

Alarm state

e

Function keys

26.8

mS/cm

25.0°C

Disp2 Menu

S1

S2

S3

S4

c

e

e

d

d

Transmitter 9125 – Conductivity / resistivity measurement

Page 25

Main display

















26.8 mS/cm : conductivity measurement

25.0 °C : temperature measurement
S1...S4 : alarm status (invisible if alarm inactive).

Display 2

S1...S4 : alarm status

S1 : activated by a temperature

> 30.0°C

S2 : inactive

: S3 in alarm system

S3 closed by a temperature

< - 20.0°C

S4 : not used

Display 3

Analogue outputs allocation:

measure or temperature.
Display of each output value with a bargraph + mA
indication.

26.8

mS/cm

25.0°C

Disp2 Menu

S1

S2

S3

S4

S1 :
S2 : OK

:

S4 : Not used

Disp3 Main

S1 S3

°C > 30.0

°C < - 20.0



I1 : Measure

I2 : Temp.

6.7 mA

Main

Transmitter 9125 – Conductivity / resistivity measurement

Page 26

Display options

Choice of the language

English is the default language. You can choose an
other language available (French, German, Italian,
Spanish or Dutch) by following the procedure below :

x Use the right function key MENU.

x Use the left function key (Select) to select the

menu SERVICE and press (Enter).

x In the menu SERVICE, use the left function key

(Select) to select DISPLAY and press (Enter).

x Select the language of your choice with the right

function key. ”Press (Enter)”.

S/DISPLAY Menu



UNIT : choice of the display of

conductivity/resistivity measurement.

x S/cm

x :.cm
x S/m
x :.m

 TEMP. : choice of the temperature

measurement.

x °C

x °F

 LANGUAGE : choice of the message language.

x French,
x English,
x German,
x Spanish,
x Italian,
x Dutch.

 Press Esc to go back to the DISPLAY menu.



CALIBRATION
MAINTENANCE
PROGRAMMING

SERVICE

MENU

Select

SERVICE



POLARIZATION
AVERAGE

CODE
SOFT ISSUE
DEFAULT VAL.
Ma ADJUST
FACTORY

SERVICE

Select

DISPLAY



UNIT : S/cm
TDS : NO
TEMP. : °C
LANGUAGE :

DISPLAY

Select

GB

Transmitter 9125 – Conductivity / resistivity measurement

Page 27

UNIT choice

As the language used, it’s possible to choose the units
of the measures in which they will be display.

 Unit. allows to choose one of the units in

conductivity or resistivity in which values will be
done.

x S/m
x :.cm
x S/cm
x :.m

TDS choice

 TDS : yes/no.

When the option TDS is selected (Yes), the
measurements will be displayed in concentration
units : in ppt (pare per thousand), ppm (part per
million) ppb (part per billion) according to the
measurement level.

When the option TDS is not selected (No),
measurements are displayed in :.cm or S/cm
according to the unit selected ; Menus for
calibration of the TDS measurement are not
displayed anymore.

Temperature UNIT choice

Allow to choose a temperature display between
Celsius or Fahrenheit degree.



UNIT : S/cm
TDS : NO
TEMP. : °C
LANGUAGE : GB

DISPLAY

Select

S/cm



UNIT : S/cm
TDS :
TEMP. : °C
LANGUAGE : GB

DISPLAY

Select

YES



UNIT : S/cm
TDS : YES
TEMP. : °C
LANGUAGE : GB

DISPLAY

Select

°C

Transmitter 9125 – Conductivity / resistivity measurement

Page 28

Concentration measure (TDS)

The Total Dissolved Solid (TDS) measure is a
concentration measure in the limits of measure where,
for a part given, the concentration of the solution is
proportional to its conductivity.

The next board show for the mains solutions, the
relations existing between concentration and
conductivity (in ppm).

The white part of the board show the limits where the
TDS display is possible.

The measure in concentration (TDS) is given by the
formula :

TDS = Cond x KTDS

The KTDS coefficient is calculated during the process
calibration of the device. It must be between 0.00 and

5.00. If it is not in this interval, an error message will
display during the calibration.

Limits of the TDS measure

For different substances, the limits of the measure
where the concentration is proportional to the
conductivity is given by the white part of the next
board:

The unit of the conductivity is μs/cm.

Weight % ppm NaCl NaOH NH4OH NH3 HCl H2SO4 HNO2 HF SO2

Acid
Acetic

0,0001 1 2,2 6, 2 4,1 6,6 11,7 8,8 6,8 10 6,4 4, 2
0,0003 3 6,5 8, 3 8,3 12 50 61 20 30 18 7,4

0,001 10 21,4 61, 1 17 27 116 85,6 67 99 54 15
0,003 30 64 182 31 49 340 251 199 290 150 30,6

0,01 100 210 603 58 84 1140 805 657 630 450 63
0,03 300 617 1780 102 150 3390 2180 1950 1490 1200 114

0,1 1000 1990 5820 189 275 11100 6350 6380 2420 3600 209
0,3 3000 5690 16900 329 465 32200 15800 18900 5100 7900 368

1 10000 17600 53200 490 810 103000 48500 60000 11700 17200 640
3 30000 48600 144000 790 1110 283000 141000 172000 34700 32700 1120

5 50000 78300 223000 958 1115 432000 237000 275000 62000 42000 1230
10 100000 140000 358000 1115 1120 709000 427000 498000 118000 61000 1530
20 200000 225000 414000 968 4251 850000 709000 763000 232300 1600
30 300000 292000 725 732000 828000 861000 390000 1405
40 400000 191000 460 770000 820000 1080
50 500000 150000 620000 717000 740
75 750000 182000 340000 168

100 1000000 10000 50000 1

Transmitter 9125 – Conductivity / resistivity measurement

Page 29

5. Programming the transmitter

Main menu

The main menu gives access to 4 main functions of
the instrument :

x The CALIBRATION menu enables to adjust the

instrument measurement according to the
reference measurements.

x The MAINTENANCE menu enables to intervene

on the instrument.

x The PROGRAMMING menu enables to program

the instrument according to the application.

x The SERVICE menu is reserved to qualified

servicing personal.



CALIBRATION
MAINTENANCE
PROGRAMMING
SERVICE

MENU

Select

Transmitter 9125 – Conductivity / resistivity measurement

Page 30

Calibration Menu

Note :
Before any calibration launching, check the

parameters of the MEASURE menu (probe type,
temp. Comp.) Are correctly configured.

(See page 25).

This option allows to calibrate the conductivity
measure, the temperature measure and to display the
concentration measure (TDS).

Conductivity calibration

With the help of the « select » function touch, choose
COND. CALIB. option. Two options appears :

x PROGRAMMING

allows to choose the electric

conductivity calibration type :

¾ 2 points
¾ 1 point.

x EXECUTION

will allow to do the desired

calibration type.

Select to "Programming" and press enter.

Select the calibration type and press enter.



TDS CALIB.
COND. CALIB.
TEMP.CALIB.
PARAMETERS
HISTORIC

CALIBRATION

Select



EXECUTION

PROGRAMMING

COND. CALIB.

Select



EXECUTION

PROGRAMMATION

COND. CALIB.

Select

PROGRAMMING



ETALONNAGE
MAINTENANCE
PROGRAMMING
SERVICE

MENU

Select

CALIBRATION

Transmitter 9125 – Conductivity / resistivity measurement

Page 31

Type of calibration

x With a 2 electrode probe

For the first point, remove the probe from liquid or
unscrew the connector from the probe.

For the second point connect a resistance to the
IN/OUT terminal of the conductivity module.

x With an inductive probe

For the first point, remove the probe from liquid.

For the second point connect a resistance with a
looped wire through the probe.



TYPE : Elect.

R = 200 :

COND. CALIB.

Select

Transmitter 9125 – Conductivity / resistivity measurement

Page 32

2 point calibration

For the first point, remove the probe from liquid or
unscrew the connector from the probe (2 electrode
probe) in a known concentration solution. The user
enters this solution value when calibrating.

1 point calibration

Immerse the probe in a known concentration solution.
The user enters this solution value when calibrating.

Note :
Warning ! This calibration is only active on the

slope

The first point of the electric calibration and 2 point
calibration enables to realise an internal electronic
calibration and to measure the cable capacity with a
2 electrode probe.

It is mandatory to realise one of both calibrations
when starting the MONEC D9125 for the first time.

.

For the second calibration point use a resistance or a
solution with a significant difference from the first point.



TYPE :

COND. CALIB.

Select

1 pt



TYPE :

COND. CALIB.

Select

2 pts

Transmitter 9125 – Conductivity / resistivity measurement

Page 33

EXECUTION

Execution of a 2 point calibration

Program the manual 2 point calibration and execute it
as follows :

x Remove the electrode from liquid.
x When the measure is stable, the instrument goes

automatically to next step.

The symbol

flashes 10 to 20 seconds.

x Press ENTER to accept the zero calibration.
x Immerse the probe in the calibration solution
x When the measure is stable, press OK.
x Change the value displayed

if you want.

x Modify the date of the calibration if necessary by

pressing

on the right function touch .

To validate the calibration parameters press
ENTER. ESC does not validate the parameters
and the former calibration parameters are kept.



EXECUTION

PROGRAMMING

COND. CALIB.

Select

EXECUTION



PROBE OUT

Press

ENTER

COND. CALIB.

Transmitter 9125 – Conductivity / resistivity measurement

Page 34

TDS measure calibration

This option is available only if you have selected the
measurement TDS in the menu DISPLAY.

Select with the function key Choice CALIB TDS in the
menu CALIBRATION and press ENTER.

This calibration permits to adjust the coefficient K
TDS between the concentration value and
conductivity.

The measurement TDS is displayed as well as the
conductivity value as secondary measurement.

Proceed to the following steps :

x Press the function key OK.
x Change the displayed value and enter the sample

value (TDS).

x The instrument indicates the result of the

coefficient calculation TDS and press ENTER.

Temperature calibration

With the help of the right function touch choice, select
the programming line and press ENTER.

The right function touch

allow to select 2

types of calibration, electric or process.



6.98

ppm

9.90 K:

CALIBRATION



6.98

ppm

06.98 ppm

CALIBRATION

0

Transmitter 9125 – Conductivity / resistivity measurement

Page 35

Temperature electric calibration / Resistor adjust

This calibration is factory realised.

Used to realise an electric calibration for the Pt100
measurement. 2 resistances of known values should
be connected to the temp + and temp - of the module
measure. This resistors should have a precision about
0,1%.

Proceed as follows :

x Launch the calibration when you have configured

an electric calibration. Lancer l'exécution après
avoir configuré l'étalonnage en étalonnage
électrique.

x The transmitter requires the connecting of the first

resistance.

x Press Enter.
x Repeat the same procedure for the second

resistance.

Process calibration

Proceed as follows after you have configured a
process calibration :

x Wait till the measurement is stable and press the

right function key OK.

x You have the possibility to change the value
x Press Enter.
x The instrument executes a zero adjustment

required to display the value configured.



RESISTANCE 1

Press

ENTER

TEMP. CALIB.



189.9

189.9°C

TEMP. CALIB.

1



TYPE :

RES1 : 100 :

TEMP. CALIB

Elect.

Transmitter 9125 – Conductivity / resistivity measurement

Page 36

PARAMETERS Menu

This menu displays the calibration parameters of the
conductivity measurement.

Date of last calibration. This date is the date the user
has entered after a conductivity calibration ( electric, 2
points, 1 point).

The other parameters are those which are displayed
when the date is registered :

x Slope of the last calibration which is a correction

factor of the conductivity probe slope.

x Si la mesure est effectuée en TDS, le coefficient

de proportionnalité entre la conductivité et la
concentration.

x Drift of the temperature measurement.

HISTORIC Menu

This menu displays the conductivity slopes
corresponding to the last two conductivity calibrations
and allows to follow the probe clogging.



DATE : 01/01/01
SLOPE : 100%
COEFF : 0.50

'T : -0.0°C

PARAMETERS



DATE : 01/01/01
SLOPE : 100%

HISTORIC

Transmitter 9125 – Conductivity / resistivity measurement

Page 37

MAINTENANCE Menu

When changing or cleaning a probe or servicing the
instrument, the transmitter continues to display
measures.

The analogue output value is the value programmed in
the mA menu. The relay status is not modified.



6.98

mS/cm

26.4°C

MAINTENANCE

Transmitter 9125 – Conductivity / resistivity measurement

Page 38

PROGRAMMING Menu

Note :

Warning ! An access code may be required if
programmed.

This menu enables the configuration of the instrument
according to its application.

In this operating mode, the measurements, the
analogue outputs and alarms remain active.



MESURE

SORTIES mA
ALARMES
RS485

PROGRAMMATION

Choix

MESURE



MESURE

mA OUTPUTS
ALARMS
RS485

PROGRAMMING

Select

MEASURE

Transmitter 9125 – Conductivity / resistivity measurement

Page 39

S/MEASURE Menu

The PROBE menu allows to configurate the utilized
probe type, TEMP. COMP. the temperature
compensation, TDS the TDS measure coefficient
when it is actived.

PROBE

This menu allows to choose the utilized probe for the
conductivity measure.

TYPE : - Induct.

- 2 elec.

choice of the electrode :
Inductive or 2 electrodes

Note :
Check both switches of the conductivity module are

correctly positioned :

- K : 2 electrodes

- I : inductive

K : XXXX Adjustment of the cell constant.

FREQ. : - Auto

- 8000

- 4000

- 2000

- 1000

- 500

- 250

- 125

- 62,5

Choice between an automatic
adjustment of the frequency
according to the measurement or
one of the pre-programmed
frequencies. (see Chapter 5 for
further details).

Only if elect. 2 type has been
selected.



TEMP. COMP.

TDS :



MEASURE

Select

PROBE



TYPE : 2 élect or inductive

K : 001.00

FREQ. :

PROBE

2 elect.

0.50

Auto

Transmitter 9125 – Conductivity / resistivity measurement

Page 40

TEMPERATURE COMPENSATION

MEASURE :

- No

- Pt 100

- Pt1000

Choice of a temperature
measurement with or without
Pt100 / Pt1000.

TYPE : - No

- Auto.

- Manual

Choice between no temperature
compensation or an automatic or a
manual temperature compensation
mode.

TEMP. : XX Possibility to enter the sample

temperature in a manual
compensation.

TREF : XX Possibility to enter the reference

temperature.

COMP. : - Coef.

- HCl

- NaCl

Possibility to choose the
temperature compensation.

COEF : XX Possibility to enter the coefficient

value.

TDS coefficient adjusting

TDS coefficient adjusting is directly in the MEASURE
menu.

Utilize the left function touch to choose the TDS
adjusting.

TDS : Choose the TDS coefficient which is necessary
to calculate the solution concentration.

Utilize the right function touch to choose a value
between 0 and 5.



MEASURE :
TYPE : Manual
TEMP. : 15°C
TREF. : 025.0°C
COMP. : Coeff.
COEF. : 2.0%

TEMP. COMP.

Select

Pt100



PROBE

TEMP. COMP. :

TDS : 0.50



MEASURE

Select

0.50

Transmitter 9125 – Conductivity / resistivity measurement

Page 41

S/mA OUTPUTS Menu

This menu allows to adjust analogue outputs.



OUTPUT 1
OUTPUT 2
SPECIAL PROG.
TEST

mA OUPUTS

Select

Transmitter 9125 – Conductivity / resistivity measurement

Page 42

OUTPUT 1/2

 AFFECT. : choice if the analogue output

allocated to measure or temperature.

x S/:

x °C/°F

 TYPE : choice of the analogue output type.

x 0/20 mA

x 4/20 mA

 MODE : choice of operating mode : linear,

logarithmic or dual.

* In logarithmic mode , the beginning of range
should be different from 0.

x Lin

x Log
x Dual

 LOWER : limit value programming.
 MIDD. : middle value only in dual mode.

 UPPER : upper limit value programming.



AFFECT. :
TYPE : 0/20 mA
MODE : Dual
LOWER : 10.0 mS
MIDD : 15.0 mS
UPPER : 20.0 mS

OUTPUT 1/2

Select

S

Transmitter 9125 – Conductivity / resistivity measurement

Page 43

S/ALARMS menu

This sub-menu allows to reach the configuration of
alarms 1 to 4.

The MODE parameter allows to choose the operating

mode of the 4 alarms :

- Limit : alarms 1...4

- USP : only alarms 1 and 2

- System : only alarm 3

- Timer : only alarm 4

MODE : x No

x Limit
x USP
x System
x Timer



ALARM 1
ALARM 2
ALARM 3
ALARM 4

ALARMS

Select



MODE : Syst

ACCEPT : Manual

RELAY : NO

ALARM 3

Select

System



MODE : Timer

INTERV : 2440 mn

Impul. Nb : 1

Ton : 005 s

Toff : 005 s

TmA : 20 mn

ALARM 4

Select

Timer

Transmitter 9125 – Conductivity / resistivity measurement

Page 44

ALARM 1/2 (limit)

 AFFECT. : choice of a limit on the measurement

or on the temperature.

x No

x S/:
x °C/°F

 LIMIT : value of the limit.

 DIR. : choice of the direction :

x Up

x Down

 DELAY : definition of the temporisation when

the relay is interlocking (in seconds).

 HYST : definition of the hysteresis in % (10%

max).

 RELAY : choice of the relays normally opened

or closed.

x N

O

x NF

ALARM 1/2 (USP)



 The TEMP menu allows the temperature to be

entered in cases where no measurement is
provided by Pt100/Pt1000. If temperature is
measured automatically, this menu is not
displayed.

 The LEVEL menu is used to set the safety margin

with respect to the USP standard: with a level of
50%, the 1.9 μS/cm threshold (50°C) drops to 0.95
μS/cm.



AFFECT. : Non
LIMIT : 20.3°C
DIR. : Up
DELAY : 30s
HYST. : 10%
RELAY : NO

ALARM 1

Select

°C/°F



MODE:
TEMP: 25.0 °C
LEVEL: 100%
TAB: P.W.
RELAY: NO

ALARM 2

Select

USP

Transmitter 9125 – Conductivity / resistivity measurement

Page 45

 The TAB menu is used to configure the stored

USP curve: W.F.I. (Water For Injection) or P.W.
(Pure Water).

USP mode

USP is a standard used in the pharmaceutical industry.
It recommends the use of a non temperature-
compensated conductivity measurements and sets the
upper limits of acceptable conductivity for USP­compliant water according to temperature. The alarm
delivered therefore varies according to the measured
temperature. For this, the instrument possesses two
stored curves:

 a curve (W.F.I.) for conductivity measurements in

high purity water or for injectable preparations

(cf. table 1),

 a curve (P.W.) for conductivity measurements in

purified water (cf. table 2).

NB:
This function is only possible in 2 electrode

measurements and when temperature
compensation has been deactivated.

T°C

Non-

compensated

conductivity

PS/cm

T°C

Non-

compensated

conductivity

PS/cm

T°C

Non-

compensated

conductivity

PS/cm

0

0.6

35

1.5

70

2.5

5

0.8

40

1.7

75

2.7

10

0.9

45

1.8

80

2.7

15

1.0

50

1.9

85

2.7

20

1.1

55

2.1

90

2.7

25

1.3

60

2.2

95

2.9

30

1.4

65

2.4

100

3.1

Table 1 - Temperature curve and conductivity requirements
for high purity water or for injectable preparations (non
temperature-compensated conductivity measurements).

Transmitter 9125 – Conductivity / resistivity measurement

Page 46

Example: if the measured temperature is equal to
22°C, the threshold is of 1.1 PS/cm and shall remain at
this value as long as the temperature stays at 22°C. If
the temperature varies, rising to 25°C, the threshold
automatically switches to 1.3 PS/cm.

NB: The delivered alarm corresponds to the value of
the threshold associated with the USP temperature
immediately below the measured temperature (i.e.
20°C and 25°C in the previous example).

T°C

Non-

compensated

conductivity

PS/cm

T°C

Non-

compensated

conductivity

PS/cm

T°C

Non-

compensated

conductivity

PS/cm

0

2.4

35

5.95

70

9.1

5

3.0

40

6.5

75

9.7

10

3.6

45

6.8

80

9.7

15

3.95

50

7.1

85

9.7

20

4.3

55

7.6

90

9.7

25

5.1

60

8.1

95

9.95

30

5.4

65

8.6

100

10.2

Table 2 - Temperature curve and conductivity requirements
for purified water (non temperature-compensated conductivity
measurements).

Transmitter 9125 – Conductivity / resistivity measurement

Page 47

ALARM 3 (Alarm system)

 In case of an alarm 3, choice between a limit

alarm or alarm system function.

MODE : x No

x Limit
x System

 In case of an alarm system, choice between an

automatic accept or a manual accept.

ACCEPT : x Auto

x Manu

 Choice between relays normally open or closed.

RELAY : x NO

x NC

ALARM 4 (Timer)

 In case of an alarm 4, choice between a limit or a

timer function.

MODE : x No

x Limit
x Timer

 INTERV : interval between two cleaning cycles in

minutes.

 Impul. Nb : number of pulses during a cleaning

cycle.

 Ton : time when relay is activated, in

seconds.

 Toff : time when relay is desactivated, in

secondes.

 TmA : hold time for the analogue outputs in

minutes.



MODE : Syst

ACCEPT : Manu

RELAY : NO

ALARM 3

Select

System



MODE : Timer

INTERV : 2440 mn

Impul. Nb : 1

Ton : 005 s

Toff : 005 s

TmA : 00 mn

ALARM 4

Select

Timer

Transmitter 9125 – Conductivity / resistivity measurement

Page 48

S/SPECIAL PROG. Menu

This screen allows to adjust 4..20 mA outputs states in
special events :

 MAINTENANCE

 CALIBRATION

 SYST. ALARM

 MODE : choice of a preset value during

calibration, alarm system or
maintenance or timer.

x last

x preset
x live

 VALUE : indication of the preset value, 0 to

21 mA.

TEST

TEST menu test the analogue outputs by step of 1 mA
(0…21mA).



MODE :

VALUE : 00 mA



SPECIAL PROG.

Select

Preset



CALIBRATION

SYST. ALARM

SPECIAL PROG.

Select

MAINTENANCE



VAL : 

TEST

Select

12 mA

Transmitter 9125 – Conductivity / resistivity measurement

Page 49

S/RS485 Menu

This option requires the RS485 kit.

N° Monec number (0...32)

BAUD 300/600/1200/2400/4800/9600/19200
Transmission speed in bauds

PARIT. - Without parity bit : No

- With odd parity bit : Odd

- With even parity bit : Even

BIT STOP - 1 bit stop

- 2 bits stop

SWAP WORD Allow to reverse the « strong

weight », « light weight » size during
the manipulation of the real variable
(float type). Some equipment need
this reverse to read correctly the real
size data.

The communication protocol is MODBUS/JBUS.

The instrument may be equipped with a RS485 board
(optional) (see MODBUS 9100 manual).



N° : 4
BAUD : 9600
PARIT. : odd
BIT STOP : 1
SWAP WORD : NO

RS485

4

Transmitter 9125 – Conductivity / resistivity measurement

Page 50

SERVICE Menu

Note :
An access code may be required if it has been

programmed.

This screen allows to reach the 9125 transmitter
configuration screens.

The display options are detailed page 26.



POLARIZATION
AVERAGE
DISPLAY
CODE
SOFT ISSUE
DEFAULT VAL..
mA ADJUST
FACTORY

SERVICE

Select

Transmitter 9125 – Conductivity / resistivity measurement

Page 51

S/POLARIZATION Menu

This menu is displayed only if you use a 2 electrode
probe.

CABLE CAP.

CABLE measure the electrode cable capacity.

It is mandatory to disconnect the probe connector to
measure the capacity or to make an electric
calibration.

TEST

TEST measure the electrode polarization (see
Chap. 5). An error message is displayed if the
polarization is superior to 0,25.



CAP. CABLE

TEST

POLARIZATION

Select



CAPACITY

1.02 nF

CABLE CAP.



POLARIZATION

0.15

TEST

CABLE CAP.

Transmitter 9125 – Conductivity / resistivity measurement

Page 52

S/AVERAGE Menu

S/AVERAGE menu program a moving average on the
measurement.

AVERAGE : define the number of measures to

calculate the average.

TEST : visualize the difference between a measure

done with or without average.

Note :
The measurement cycle lasts 4 seconds if there is

a temperature measurement and only 2 seconds
without temperature measurement.



AVERAGE

28.3 mS/cm

REAL

27.9 mS/cm

TEST



AVERAGE : 9

TEST :

AVERAGE

Select

TEST :

Transmitter 9125 – Conductivity / resistivity measurement

Page 53

S/CODE Menu



CALIB. : access code for temperature and

conductivity calibrations menu.

 PROG. : access code for "Programming" menu.

 SERVICE : access code for "service" menu.

Note :
If you have forgotten your access code, press

simultaneously ESC and ENTER to enter into the
menu.



CALIB. :

PROG. : 0000

SERVICE : 0000

CODE

Select

0000

Transmitter 9125 – Conductivity / resistivity measurement

Page 54

S/SOFT ISSUE Menu

The transmitter displays the type of instrument and the
software version installed.

S/DEFAULT/VALUES Menu

Note :
If you press YES, you load the default values and

you loose the programmed values and the
calibration parameters.



MONEC 9125

Cond X.XX

SOFT ISSUE



Loading

values

default ?

DEFAULT/VAL.

Yes

!

Transmitter 9125 – Conductivity / resistivity measurement

Page 55

S/mA ADJUST Menu

This menu adjustment of the analogue outputs to
20 mA with an internal coefficient between

-9999...9999.

S/FACTORY Menu

Factory code necessary.

The user has no access to this menu.



OUTPUT 1

OUTPUT 2

mA ADJUST

Select



VALUE : 0000

OUTPUT 1/2

- +

Transmitter 9125 – Conductivity / resistivity measurement

Page 57

6. Polarization

Electric representation of the probe and its cable

In a conductivity measurement with a 2 electrode
probe the measurement current is transmitted via the
electrodes. The current is ensured by electrons in the
electrodes and by ionic migration in the solution
measured. An electron exchange process occurs
between the solution and the electrodes.

A significant example below :

2 H

2

O=H+ + O2 + 4e-

and

2 H

2

O +2e- = H2 +2 OH-

This reaction requires energy and causes a potential
difference which does not rely on conductivity.

This phenomenon is known as polarization and may
be represented by the scheme below :

Cp

Rx

Cc

V

Polarization

Conductivity

Cable capacity

Rp

electric equivale nt of the conductivit y probes

Transmitter 9125 – Conductivity / resistivity measurement

Page 58

where :

The dipole Rp, Cp represents the active and reactive
part of the energy necessary to the electron exchange
between the sample and the electrodes.

and :

Cc : the cable capacity

Frequency adjustment according to the conductivity
measurement

0,1

1

10

Cond (theo.) / Cond (meas.)

1E1 1E2 1E3 1E4 1E5

real conductivity (uS/cm)

Auto frequency 62.5 Hz 8000 Hz

Probe 8317 (K=1)

100 m of cable

In the example below 3 measuring ranges are
described :

x measuring range 1 μS/cm to 100 μS/cm :

When the measuring frequency is high, the cable
capacity becomes important and induces an error
in the conductivity measurement.

If you use a long cable, use the lowest
frequency possible.

Transmitter 9125 – Conductivity / resistivity measurement

Page 59

x measuring range 100 μS/cm to 1 mS/cm :

In this measuring range the cable capacity or the
polarization are negligible and do not perturb the
conductivity measurement.

x measuring range 1 mS/cm to 20 mS/cm :

When the measuring frequency is low, the
polarization becomes important and induces an
error in the conductivity measurement.

It is required to use a high frequency.

Automatic adjustment of the frequency

The 9125 adjusts automatically the measurement
frequency according to the conductivity measured, the
cable capacity and the polarization.

The cable capacity is measured in the calibration of
the first calibration point or in the menu
SERVICE\POLARIZATION\CABLE CAPA.

Polarization is regularly measured and an error
message is displayed if it is too high.

Transmitter 9125 – Conductivity / resistivity measurement

Page 61

7. Error messages

Note :
In manual acquittal, in order to suppress an error

message press ENTER after correcting the default.

ERROR MESSAGE

DESCRIPTION/POSSIBLE CAUSE

¾ Sensor not correctly connected
Temperature sensor damaged
Replace it if necessary.

¾ Sensor not correctly connected
Temperature sensor damaged
Replace it if necessary.

¾ The resistivity value is inferior to the lower limit of the

measuring range

.

¾ The conductivity value is superior to the upper limit of

the measuring range

.

¾ The electrode polarization is too high.

10.3

mS/cm

Pt100/Pt1000

SHORT CIRCUIT

12.7

mS/cm

Pt100/Pt1000

OPEN CIRCUIT

60

:

.cm

MEASURE

TOO LOW

15.2

mS/cm

MEASURE
TOO HIGH

15.2

mS/cm

POLARIZATION

TOO HIGH

Transmitter 9125 – Conductivity / resistivity measurement

Page 62

ERROR MESSAGES DURING A CALIBRATION

Note :
Press ESC to leave the menu and calibrate again.

¾ The electronic zero shift is superior to the limit

programmed.

Calibrate again.

¾ The slope shift is superior to the limit

programmed.

Limits : 50...150 %

¾ The temperature drift is superior to the limit

programmed

.

Limits : r 20 °C

OFFSET

OUT OF LIMITS

SLOPE : 162 %

SLOPE

OUT OF LIMITS

'

T : -30.0°C

'

T

OUT OF LIMITS

COND. CALIB.

COND. CALIB.

TEMP. CALIB.

Transmitter 9125 – Conductivity / resistivity measurement

Page A1

Appendix A : Default values

CALIBRATION

COND. CALIB.

TYPE : Electr.
RES. : 1000 :

TEMP. CALIB.

TYPE : Process

PARAMETERS

DATE : 01/01/01
SLOPE : 100.0%

'T : 0.0°C

PROGRAMMING

MEASURE

PROBE

TYPE : 2 elect.
K : 001.00
FREQ. : Auto

TEMP. COMP.

MEASURE : No
TEMP. : 025.0°C
TREF. : 025.0°C
COMP. : Coef.
COEF. : 2.0 %

ALARMS

ALARMS S1

AFFECT. : S
LIMIT : 10.0 mS
DIR. : Down
DELAY : 000 s
HYST. : 00%
RELAY : NO

ALARMS S2

AFFECT. : S
LIMIT : 10.0 mS
DIR. : Down
DELAY : 000 s
HYST. : 00%
RELAY : NO

ALARMS S3

AFFECT. : S
LIMIT : 10.0 mS
DIR. : Down
DELAY : 000 s
HYST. : 00%
RELAY : NO

ALARMS S4

AFFECT. : S
LIMIT : 10.0 mS
DIR. : Down
DELAY : 000 s
HYST. : 00%
RELAY : NO

mA OUTPUTS

OUTPUT 1

AFFECT. : S
TYPE : 4-20
MODE : Lin
LOWER : 1.0 PS
UPPER : 10.0 PS

OUTPUT 2

AFFECT. : °C
TYPE : 4-20
LOWER : 0 °C
UPPER : 100 °C

Transmitter 9125 – Conductivity / resistivity measurement

Page A2

SPECIAL PROG.

MAINTENANCE

MODE : Last

TIMER
MODE : Last

CALIBRATION

MODE : Last

SYST. ALARM

MODE : Last

RS485

No : 1
BAUD : 19200
PARITY : No
STOP BIT : 1

SWAP WORD : No

SERVICE

AVERAGE

AVERAGE : 1

DISPLAY

DISPLAY
UNIT : S/cm
TEMP. : °C
LANGUAGE : GB

CODE

CODE

CALIB. : 0000
PROG. : 0000
SERVICE : 0000

Transmitter 9125 – Conductivity / resistivity measurement

Page B1

Appendix B : Spare parts list

No other spare parts except those below in the table should be replaced in the
instrument.

Part number

Description

09125=A=1001

9125 equipped CPU board

09125=A=1500

9125 complete conductivity module

09125=A=2000

9125 power supply (standard version)

09125=A=2020

9125 power supply (low voltage version)

09125=A=4000

Relay board (option)

09125=A=1101

RS485 board (option)

09125=A=2485

RS485 kit (JBUS/MODBUS manual +board)

09125=C=3000

Mounted transmitter housing

425=110=221

Cable gland PG11

425=135=222

Cable gland PG13,5

351=007=001

Strap FLEXPAC 7 PTS

621=091=025

French instruction manual

621=191=025

English instruction manual

621=291=025

German instruction manual

621=491=025

Italian instruction manual

621=591=025

Spanish instruction manual

621=891=025

Dutch instruction manual

621=991=000

JBUS/MODBUS communication manual

По вопросам продаж и поддержки обращайтесь:

Астана [phone], Волгоград [phone], Воронеж [phone], Екатеринбург [phone],

Казань [phone], Краснодар [phone], Красноярск [phone], Москва [phone],
Нижний Новгород [phone], Новосибирск [phone], Ростов-на-Дону [phone],
Самара [phone], Санкт-Петербург [phone], Саратов [phone], Уфа [phone]

Единый адрес: [e-mail]

Веб-сайт: hach.nt-rt.ru