Hach-Lange 1200-S User Manual

DOC023.52.03253

1200-S sc digital combined electrode

for pH and Redox

User Manual

02/2013 Edition 2A

© HACH LANGE GmbH, 2005, 2013. All rights reserved. Printed in Germany.

Table of contents

Section 1 Specifications .............................................................................................................................................. 3

1.1 Technical data on the 1200-S sc - pH / ORP sensor................................................................................................. 3

Section 2 General information ..................................................................................................................................... 5

2.1 General handling instructions .................................................................................................................................... 5

2.2 Applications ............................................................................................................................................................... 5

2.3 Measuring principle ................................................................................................................................................... 5

2.3.1 pH measurement ............................................................................................................................................. 5

2.3.2 REDOX measurement ..................................................................................................................................... 6

Section 3 General safety instructions ......................................................................................................................... 7

3.1 Possible sources of hazards...................................................................................................................................... 7

3.2 Safety symbols .......................................................................................................................................................... 7

3.3 Electrical safety measures and fire prevention measures ......................................................................................... 8

3.4 Chemical safety measures ........................................................................................................................................ 9

3.5 Safety measures related to the flow of sample.......................................................................................................... 9

Section 4 Installation....................................................................................................................................................11

4.1 Connecting the sensor cable ................................................................................................................................... 11

4.2 Mechanical sensor installation................................................................................................................................. 12

4.2.1 Installation dimensions .................................................................................................................................. 12

Section 5 Operation..................................................................................................................................................... 15

5.1 Operating the sc controller ...................................................................................................................................... 15

5.2 Sensor setup ........................................................................................................................................................... 15

5.3 Sensor data logger .................................................................................................................................................. 15

5.4 The commands under SENSOR DIAG.................................................................................................................... 15

5.5 The commands under SENSOR SETUP ................................................................................................................ 16

5.6 Sensor calibration (pH) ........................................................................................................................................... 17

5.6.1 Calibration using a buffer solution.................................................................................................................. 17

5.6.2 Calibration using two buffer solutions ............................................................................................................ 17

5.6.3 Calibration using a sample solution ............................................................................................................... 18

5.6.4 Calibration using two sample solutions.......................................................................................................... 18

5.7 Sensor calibration (REDOX).................................................................................................................................... 18

5.8 Sensor calibration (temperature) ............................................................................................................................. 19

5.8.1 Calibrating two sensors simultaneously ......................................................................................................... 19

Section 6 Maintenance ................................................................................................................................................ 21

6.1 Maintenance schedule............................................................................................................................................. 21

6.2 Cleaning the sensor................................................................................................................................................. 21

6.3 Changing electrode ................................................................................................................................................. 21

Section 7 Faults, causes, rectification ...................................................................................................................... 23

7.1 Error messages ...................................................................................................................................................... 23

7.2 Warnings ................................................................................................................................................................ 23

7.3 Important service data ............................................................................................................................................. 24

I

Table of contents

Section 8 Spare parts...................................................................................................................................................25

Section 9 Warranty and liability..................................................................................................................................27

Section 10 Contact.......................................................................................................................................................29

Appendix A ModBUS Register Information ..............................................................................................................31

II

Section 1 Specifications

1.1 Technical data on the 1200-S sc - pH / ORP sensor

Materials Stainless steel metal housing

Enclosure rating IP 68; stainless steel metal housing

pH measuring range 0 pH ... 14 pH

ORP measuring range –1,500 ... 1,500 mV

Temp. measuring range –5 °C ... 50 °C

Storage temperature
Sensor and controller

pH / ORP response time <15s; T90

Temp. response time <2min; T90

pH measuring accuracy ± 0.02 pH

ORP measuring accuracy ± 1.2 mV

Temp. measuring accuracy ± 0.2 °C

Reproducibility ± 0.5 % of the end value of the measuring range

Sensitivity ± 0.5 % of the end value of the measuring range

Calibration, pH

Calibration, ORP One point, comparative measurement

Calibration, temp One point, comparative measurement

Max. immersion depth / pressure
for the sensor

Maximum flow speed 4 m/s

Sensor interface MODBUS

–20 °C ... 60 °C; 95 % relative humidity, non-condensing

One or two point, standard buffer solution (automatic),
One or two point, comparative measurement

20 m / 2 bar over-pressure

Sensor cable 10 m, hard wired, polyurethane

Sensor weight <1 kg

Sensor dimensions (Ø × L) 42 × 504 mm

Fastening

Service life measuring electrode Approx. 1 year

Sensor power < 7 W

• Immersed pipe

• Chain

Specifications are subject to change without notice.

3

Specifications

4

Section 2 General information

2.1 General handling instructions

CAUTION!
The sensor will only work correctly when the tip of the probe is completely
immersed in liquid. The measuring probe must not be stored dry for more
than approx. 10 minutes or protrude from the medium to be measured. Use
the transport cap during the installation of the sensor, during maintenance
and when transporting, and fill the cap with 3 mol. KCl or pH 4 buffer
solution.

CAUTION!
Potential danger with contact with chemical/biological substances. Working
with chemical samples, standards and reagents can be dangerous. Make
yourself familiar with the necessary safety procedures and the correct
handling of the chemicals before use and read and follow all relevant safety
data sheets.

2.2 Applications

The sensor makes it possible to simply and exactly measure pH directly in
aqueous solutions.

2.3 Measuring principle

2.3.1 pH measurement

Typical applications include

• Inlet and / or outlet of a sewage treatment plant

• Activated sludge tanks or

• Surface water (rivers, streams or lakes).

Various different possible installations enable the system to be adapted to a very
wide range of conditions.

pH is the negative logarithm of the hydrogen ion activity as well as a
measurement of the acidic or alkaline content of a solution:

pH = –log10 [aH+]

The pH value is normally measured using a glass electrode and a reference
electrode. In this case the glass electrode acts as the transducer that converts the
chemical energy (hydrogen ion activity) into electrical energy (measured in
millivolts). The reaction is symmetrical and the electrical circuit is closed by the ion
flow from the reference solution to the test solution.

Together with the reference solution, the electrode generates a voltage (EMF).
The magnitude of the voltage is dependent on the type of reference electrode, the
internal design of the glass electrode, the pH value of the solution as well as the
temperature.

5

General information

This voltage is expressed by the following Nernst equation:

E = Eo – (2.3 RT/F)xlog a[H+]
E = Eo – (gradient) xlog a[H+]

Where the following applies:

2.3.2 REDOX measurement

E
Eo

R
T
a[H+]

F

=

EMF value of the cell

=

Zero voltage (isopotential) of the system (depends on the internal
design of the glass electrode and reference electrode)

=

Gas constant

=

Temperature in Kelvin

=

Activity of the hydrogen ions
(corresponds to the concentration of the hydrogen ions)

=

Faraday constant

With every unit change in the pH (or decimal change in the ion concentration), the
EMF produced by the pair of electrodes changes by 59.16 mV at 25 °C. This
value is termed the gradient of the electrode.

The pH electrode pair is calibrated using solutions with a known and constant
hydrogen ion concentration. These solutions are termed buffer solutions. The
buffer solutions are used for the calibration of both the electrode isopotential and
the gradient.

In a Redox system the measurements are made using a balanced instrument that
comprises a Redox electrode and a reference electrode. The potential to be
measured is termed the Redox potential and depends on the relationship between
the activities of the two components of a Redox system and the number of
electrons transferred. In many cases, the pH value of the solution also affects the
potential.

The half-cell potential εB of the reference electrode has a large effect on the
potential E of the measuring chain. To rectify this effect, the potential of the
measuring electrode can be referred to the hydrogen electrode. If εB is the half­cell potential of the reference electrode used, the calculation is performed using
the following formula:

ε(H) = E + εB

ε(H)
εB

EMF value of the cell

=
=

Half-cell potential

Such standardised Redox potentials provide a certain amount of information on
the oxidisation or reduction potential of a Redox system. Increasing positive
values indicate increasing oxidation energy. The more negative the potential, the
higher the reduction energy. The area that is of interest in practice is between
+1500 and –1000 mV.

Standard potentials for a Redox system for aOx = aRed (a=activity) and for pH = 0
can be defined. This is turn corresponds to a standardised hydrogen ion activity of
aH+ = 1 mole per litre.

The stability and ability to reverse a Redox system have a significant effect on the
reproducibility of the Redox potential measured.

6

Section 3 General safety instructions

Prior to unpacking, commissioning or operating the instrument, read all of this
manual.

Please pay particular attention to all instructions on hazards and safety. Otherwise
there is a risk of serious injury to the operator or damage to the instrument, or
pollution.

The sensor is only allowed to be installed and used as per the instructions in this
manual.

3.1 Possible sources of hazards

During the operation or calibration of the sensor, there exist the following sources
of hazards if the safety instructions are not observed:

• Potentially hazardous materials (buffer solutions, flow of sample)

In all circumstance observe the safety data sheets and the applicable health and
safety instructions.

3.2 Safety symbols

This symbol, if present on the instrument, refers to information in the operating instructions on safe operation and / or
instructions that provide safety information.

This symbol, if present on a housing or a protective cover, identifies the risk of an electric shock (which may under
certain circumstances be fatal). Only personnel qualified for working on hazardous voltages are allowed to open the
enclosure or remove the protective cover.

This symbol, if present on the instrument, identifies the location of a fuse or current limit.

This symbol, if present on the instrument, identifies a part that may become hot and must not be touched without
taking precautions.

This symbol, if present on the instrument, indicates the presence of components that could be damaged by
electrostatic discharge. Appropriate precautions are to be taken.

This symbol, if present on the instrument, indicates the presence of dangerous chemical substances. Chemicals are
only allowed to be handled and maintenance on devices for supplying chemicals is only allowed to be performed by
personnel qualified and trained for working with chemicals.

All stickers and labels on the instrument are to be observed. Otherwise injuries,
pollution or damage to the instrument may occur.

7

General safety instructions

This symbol, if present on the instrument, indicates that safety glasses must be worn.

This symbol, if present on the instrument, identifies the location of the connection for the protective earth (ground).

As of 12 August 2005, electrical appliances marked with this symbol are no longer allowed to be disposed of in
Europe in unsorted household or industrial waste. As per the applicable regulations (EU directive 2002/96/EC), from
this date on consumers in the EU must return old appliances to the manufacturer for disposal. This disposal is free of
charge for the consumer.

Note: You can obt ain instructions on the correct disposal of all (marked and unmarked) electrical products that have
been supplied or manufactured by Hach-Lange from your local Hach-Lange sales office.

3.3 Electrical safety measures and fire prevention measures

The following safety instructions must be observed during the installation
and repair of cables that carry electrical power:

DANGER!
Sensors and controller are designed for compliance with the U.S. and
Canadian NEC as well as the European low voltage directive. No internal
electrical or electronic parts are allowed to be modified in any way, as this
could render the CE conformity void.

WARNING!
Only qualified experts may perform the tasks described in this section of the
manual, while adhering to all locally valid safety regulations.

• Prior to maintenance or repair of the instrument, isolate it from the power

supply.

• When making electrical connections, all applicable local and national
regulations are to be met.

• The use of earth leakage trips is strongly recommended.

• The instrument must be correctly earthed for correct operation.

8

3.4 Chemical safety measures

CAUTION!
Reference and standard solutions are used for the calibration. Some of
these compounds are toxic or caustic.

Potential danger with contact with chemical/biological substances. Working
with chemical samples, standards and reagents can be dangerous. Make
yourself familiar with the necessary safety procedures and the correct
handling of the chemicals before use and read and follow all relevant safety
data sheets.

Physical contact with a calibration solution and inhalation of vapours from a
calibration solution are to be avoided or limited to an absolute minimum.

3.5 Safety measures related to the flow of sample

The assessment of the possible hazards from the individual sample flows is the
responsibility of the user. Suitable safety measures are to be taken to avoid any
unnecessary contact with a flow of sample of unknown composition in relation to
the hazards due to traces of chemicals, radiation or biological effects.

General safety instructions

9

General safety instructions

10

Section 4 Installation

1

2

3

4

5

6

4.1 Connecting the sensor cable

You can connect the sensor cable to the controller very easily using the plug.
Retain the protective cap for the socket in case you need to remove the sensor in
the future. Connecting cables are available in the lengths 5 m, 10 m, 15 m, 20 m,
30 m and 50 m. From a length of 100 m a bus termination box must be integrated
(see Section 8 on page 25).

Fig. 1 Connection of the sensor plug to the controller

Fig. 2 Sensor connector pin assignment

Number Description Cable colour

1+12 VDC brown
2Ground black
3 Data (+) blue
4 Data (–) white
5 Screen Screen (grey)
6Notch

11

Installation

320 mm

70 mm

430 mm
500 mm

545 mm

160 mm

65 mm

57 mm

40 mm

6 mm

1“ NPT

4.2 Mechanical sensor installation

CAUTION!
The sensor will only work correctly when the tip of the probe is completely
immersed in liquid. The measuring probe must not be stored dry for more
than approx. 10 minutes or protrude from the medium to be measured. Use
the transport cap during the installation of the sensor, during maintenance
and when transporting, and fill the cap with 3 mol. KCl or pH 4 buffer
solution.

CAUTION!
Potential danger with contact with chemical/biological substances. Working
with chemical samples, standards and reagents can be dangerous. Make
yourself familiar with the necessary safety procedures and the correct
handling of the chemicals before use and read and follow all relevant safety
data sheets.

Requirements

• Ensure that the sensor does not collide with other instruments or objects in

the tank. In this way you will avoid damaging the sensor.

• Fasten the sensor to the nearest wall with a minimum spacing of 0.5 m.

4.2.1 Installation dimensions

12

Fig. 3 Installation examples

Installation

1. Rim mounting chain bracket, PVC or stainless steel 2. Rim mounting immersed pipe, PVC or stainless steel

13

Installation

14

Section 5 Operation

5.1 Operating the sc controller

The sensor can be operated with all sc controllers. Prior to using the sensor,
familiarise yourself with the principle of operation of your controller. Learn how to
navigate in the menus and run appropriate functions.

5.2 Sensor setup

When you connect the sensor for the first time, the serial number of the sensor is
displayed as the sensor name. You can change the sensor name as follows:

1. Open the MAIN MENU.

2. Choose SENSOR SETUP and accept.

3. Choose the related sensor and accept.

4. Choose CONFIGURE and accept.

5. Choose EDIT NAME and accept.

6. Edit the name and accept to return to the SENSOR SETUP menu.

In the same way complete your system configuration using the commands as per
table 5.5 The commands under SENSOR SETUP.

5.3 Sensor data logger

A data memory and event memory per sensor are available via the sc controller.
While measured data are saved in the data memory at stipulated intervals, the
event memory collects numerous events such as configuration changes, alarms
and warning conditions. Both the data memory and the event memory can be
read out in CSV format. For information on how you can download the data,
please see the controller manual.

5.4 The commands under SENSOR DIAG

SENSOR DIAG

SELECT SENSOR (for several sensors)

ERROR LIST List of all errors that have occurred (see Section 7.1 Error messages)
WARNING LIST List of all warnings that have occurred (see Section 7.2 Warnings)

15

Operation

5.5 The commands under SENSOR SETUP

SENSOR SETUP

SELECT SENSOR (for several sensors)

CALIBRATE

1 POINT BUFFER

2 POINT BUFFER

1 POINT SAMPLE

2 POINT SAMPLE

PROCESS TEMP Set temperature displayed.
CAL CONFIG

OUTPUT MODE

CAL REMINDER

DEFAULT SETUP Return to the factory settings after prompt for confirmation.

CONFIGURE

EDIT NAME Enter a 10-character name and accept.
SELECT MEASURE Choose between pH and REDOX.
TEMP UNITS Temperature figures in degrees Celsius or Fahrenheit.
LOG SETUP

LOG INTERVAL Choose between the values available or DISABLED.

TEMP. INTERVAL Choose between the values available or DISABLED.
FILTER Enter a value.
DISPLAY FORMAT Choose the display format.
SELECT BUFFER Choose a buffer.
T-SENSOR

AUTOMATIC

MANUAL Enter a value.
MAINS FREQ. Enter the mains frequency.
DEFAULT SETUP Returns to the factory settings after a prompt for confirmation.

DIAG/TEST

PROBE INFO Provides information on driver, software and serial number
CAL DATA Provides information on the offset (T), slope und offset (pH).
SIGNALS Provides information on the raw measured data in mV, pH and °C / F

COUNTERS

TEST/MAINT Disable OUTPUT during test or maintenance
SERVICE Reset Service Counter

Calibration using a buffer — normally pH 7, see 5.6.1 Calibration using

a buffer solution.

Calibration using two buffers — normally pH 7 and pH 4 or 10, see

5.6.2 Calibration using two buffer solutions.

Calibration using a known sample, see 5.6.3 Calibration using a

sample solution.

Calibration using two samples, both with known pH value, see 5.6.4

Calibration using two sample solutions.

Choose between:
ACTIVE, measured value and thus the outputs signals follow
the calibration process;
HOLD, the last measured value and thus the output signal
are frozen;
TRANSFER, the measured value and thus the output signal are set
to a defined value and
CHOICE, after each calibration you can choose one of the three above
options.

You can set when the next calibration is to be performed. The
controller then automatically indicates when the next calibration is due.

Counts up after each calibration and compares the value with the
setting made under CAL REMINDER

16

5.6 Sensor calibration (pH)

The electrode is calibrated in the factory and is very stable. As a rule, calibration is
only necessary after several weeks or after the electrode of the probe is changed.
For continued retention of the measuring accuracy and reproducibility, the
manufacturer recommends the replacement of the electrode after approx. one
year of operation.

Calibrate the sensor

• after the electrode of the probe is changed,

• as required or

• in accordance or agreement with the authorities.

Operation

Note: If you use alkaline buffer
solutions, use them quickly. They
absorb carbon dioxide from of the
air and are therefore relatively
unstable.

The calibration comprises one or two sample or buffer solutions with defined pH
value and the comparison of the values displayed with the values for the sample
or buffer solution. The calibration is straightforward for the user to perform.

5.6.1 Calibration using a buffer solution

1. Ensure the correct buffers solutions are selected in the SENSOR

SETUP=>CONFIGURE=>SELECT BUFFER menu.

2. Remove the sensor from the flow of product and clean it.

3. Place the sensor and the buffer solution at the same temperature.

4. Hold the sensor in the buffer solution for 10 minutes and accept to continue.

5. Accept when the measured value has stabilised.

The sensor detects the buffer solution and makes all the necessary settings
automatically.

5.6.2 Calibration using two buffer solutions

The calibration is performed in exactly the same way for the calibration with one
buffer solution. In addition, the controller prompts you to:

1. Clean the sensor and hold it in the second buffer solution for 10 minutes.

The sensor detects the buffer solution and makes all the necessary settings
automatically.

17

Operation

5.6.3 Calibration using a sample solution

1. Remove the sensor from the flow of product and clean it.

2. Place the sensor and the sample solution at the same temperature.

3. Hold the sensor in the sample solution for 10 minutes and accept to continue.

4. Wait until the measured value has stabilised and enter the pH value for the

sample solution. The value for the sample can be determined by a laboratory
analysis or a comparative indication.

5.6.4 Calibration using two sample solutions

The calibration is performed in exactly the same way for the calibration with one
sample solution. In addition, the controller prompts you to:

1. Clean the sensor and hold it in the second sample solution for 10 minutes.

2. Enter the pH value for the second sample solution.

5.7 Sensor calibration (REDOX)

Calibration using a sample solution is available for calibrating the sensor for
Redox.

1. Remove the sensor from the flow of product and clean it.

2. Place the sensor and the sample solution at the same temperature.

3. Hold the sensor in the sample solution for 10 minutes and accept to continue.

4. Wait until the measured value has stabilised and enter the value for the

sample solution. The value for the sample can be determined by a laboratory
analysis or a comparative indication.

18

5.8 Sensor calibration (temperature)

To calibrate the temperature sensor, proceed as follows:

1. Ensure that the correct temperature unit is selected in the
SENSOR SETUP=>CONFIGURE=>TEMP UNITS
menu.

2. Open the SENSOR SETUP => CONFIGURE => T-Sensor menu and choose
MANUAL.

3. Immerse the probe for a minimum of 10 min. in a reference solution while
monitoring the temperature of the solution with a thermometer (measuring
accuracy

4. Compare the temperature displays on the sensor and the thermometer.

5. Enter the value on the thermometer in the controller.

6. Wait until the value displayed has stabilised and accept.

7. The correction factor is calculated and the temperature values will in future be

displayed correctly.

± 0.1 °C).

Operation

5.8.1 Calibrating two sensors simultaneously

1. Start by calibrating the first sensor and when you arrive at the point at which

you are prompted to "PRESS ENTER WHEN STABLE".

2. Press the BACK key.

3. Select LEAVE and press accept. The display returns to the display of the

measurements. The measured value for the sensor to be calibrated starts to
flash.

4. Start the calibration of the other sensor and when you again arrive at the point
at which you are prompted to "PRESS ENTER WHEN STABLE".

5. Press the BACK key.

6. Select EXIT and press accept. The display returns to the display of the

measurements. The measured values for both sensors start to flash.

7. To return to the calibration menu for the individual sensors, open the main
menu, select SENSOR SETUP and accept. Choose the required sensor and
accept.

8. When calibration is complete, accept.

19

Operation

20

Section 6 Maintenance

6.1 Maintenance schedule

The following table reflects experience and may, depending on the sector and
application, vary significantly from actual requirements.

Maintenance task 90 days annual

Clean sensor x

Check sensor for damage x

6.2 Cleaning the sensor

6.3 Changing electrode

Renew sensor electrode

Calibration
(if necessary)

You can set the calibration interval in the sensor setup. The controller then
reminds you when calibration is due.

Clean the sensor with a jet of water. If there is still soiling present, use a soft,
damp cloth.

Change the electrode once a year or if the measurements are excessively
inaccurate despite cleaning and calibration.

1. Unscrew the protective cage from the tip of the sensor.

2. Pull out the electrode. If necessary, also lift out the base ring using a

screwdriver.

If necessary as per agreement with the authorities

(depending on the application)

x

3. Undo the union nut on the connector and replace the electrode.

Fig. 6-1 Changing the electrode

21

Maintenance

The new electrode is fitted in the reverse order of removal.

1. Slide the new electrode into the sensor until the base ring is in contact with
the electrode so that the sensor is sealed.

2. Calibrate the sensor using two buffer solutions (see 5.6.2 Calibration using

two buffer solutions).

22

Section 7 Faults, causes, rectification

7.1 Error messages

Possible sensor errors are displayed by the controller.

Table 1: Error messages

Error displayed Cause Rectification

*****

SENSOR MISSING
FFFFFFFFFFFFF

TEMP TOO LOW Measured temperature < –5 °C

TEMP TOO HIGH Measured temperature > +100 °C

pH TOO LOW pH is lower than –2 pH

pH TOO HIGH pH is higher than +14 pH

mV TOO LOW mV is lower than –1500 mV

mV TOO HIGH mV is higher than +1500 mV

No communication with the
controller

No communication with the
controller

Check the connection to the controller
Check the cable to the controller
Check the 12 V power supply

Check the connection to the controller
Check the cable to the controller
Check the 12 V power supply

Ensure that the medium temperature is > –5 °C.
Check whether the internal resistance of the Pt 100 is

approx. 99 Ohm.
Ensure that the medium temperature is < +100 °C.

Check whether the internal resistance of the Pt 100 is
approx. 138.5 Ohm.

Check the sensor for leaks.
Change the electrode.
Change the board.

Check the sensor for leaks.
Change the electrode.
Change the board.

Check the sensor for leaks.
Change the electrode.
Change the board.

Check the sensor for leaks.
Change the electrode.
Change the board.

7.2 Warnings

Possible warning messages are displayed by the controller.

Table 2: Warnings

Error displayed Cause Rectification

CAL TOO OLD

HUMIDITY BAG The desiccant bag is more than 1000 days old. Please contact service.
REF IMP. LOW Impedance of Reference electrode too low Please contact service.
REF IMP. HGH Impedance of Reference electrode too high Please contact service.
GLASS IMP. LOW Impedance of Glass electrode too low Please contact service.
GLASS IMP. HGH Impedance of Glass electrode too high Please contact service.

The last calibration was more than x days ago.
(Setting from the sensor setup)

Calibrate the sensor.
Set the calibration interval in the sensor setup.

23

Faults, causes, rectification

7.3 Important service data

SLOPE 120 % 80 %

CAL DATA

Counter

Offset pH + 3 pH – 3 pH
Offset ORP + 250 mV – 250 mV
Temperature offset correction + 5 °C – 5 °C
Humidity bag 1000 days
Operating time

Data Minimum Maximum

24

Section 8 Spare parts

Digital 1200-S sc pH sensor ........................................................................................................... LXV426.99.10001

Digital 1200-S sc ORP sensor........................................................................................................ LXV426.99.20001

Replacement pH electrode ............................................................................................................................. LZX889

Replacement ORP electrode.......................................................................................................................... LZX890

Replacement electrode protective cage ......................................................................................................... LZX899

Operating instructions....................................................................................................................DOC023.52.03253

Accessories

Cable extension set (0.35 m).......................................................................................................................... LZX847

Cable extension set (5 m)............................................................................................................................... LZX848

Cable extension set (10 m)............................................................................................................................. LZX849

Cable extension set (15 m)............................................................................................................................. LZX850

Cable extension set (20 m)............................................................................................................................. LZX851

Cable extension set (30 m)............................................................................................................................. LZX852

Cable extension set (50 m)............................................................................................................................. LZX853

Termination box ............................................................................................................................................. 5867000

Immersed pipe, V4A....................................................................................................................... LZX914.99.01200

Immersed pipe, PVC ...................................................................................................................... LZX914.99.02200

Chain bracket, V4A..........................................................................................................................LZX914.99.11200

Chain bracket, PVC ........................................................................................................................ LZX914.99.12200

Immersed pipe set, V4A ................................................................................................................. LZX914.99.31200

Immersed pipe set, PVC................................................................................................................. LZX914.99.32200

U-bolt.............................................................................................................................................................. LZX959

Reagents and standards

Standard solution...............................................................................................................................25M1A1025-115

Buffer, pH 7, 500 ml........................................................................................................................................ 3A0421

Buffer, pH 4, 500 ml........................................................................................................................................ 3A0422

Buffer, pH 10, 500 ml ...................................................................................................................................... 3A0942

Buffer, pH 7, 4 l................................................................................................................................. 25M1A1016-123

Buffer, pH 4, 4 l................................................................................................................................. 25M1A1014-123

Buffer, pH 10, 4 l............................................................................................................................... 25M1A1017-123

ORP standard solution, 200 mV, 500 ml........................................................................................... 25M2A1001-115

ORP standard solution, 600 mV, 500 ml........................................................................................... 25M2A1002-115

ORP standard solution, 200 mV, 4 l................................................................................................. 25M2A1001-123

ORP standard solution, 600 mV, 4 l................................................................................................. 25M2A1002-123

25

Spare parts

26

Section 9 Warranty and liability

HACH LANGE GmbH warrants that the product supplied is free of material and
manufacturing defects and undertakes the obligation to repair or replace any
defective parts at zero cost.

The warranty period for instruments is 24 months. If a service contract is taken out
within 6 months of purchase, the warranty period is extended to 60 months.

With the exclusion of the further claims, the supplier is liable for defects including
the lack of assured properties as follows: all those parts that, within the warranty
period calculated from the day of the transfer of risk, can be demonstrated to have
become unusable or that can only be used with significant limitations due to a
situation present prior to the transfer of risk, in particular due to incorrect design,
poor materials or inadequate finish will be improved or replaced, at the supplier's
discretion. The identification of such defects must be notified to the supplier in
writing without delay, however at the latest 7 days after the identification of the
fault. If the customer fails to notify the supplier, the product is considered
approved despite the defect. Further liability for any direct or indirect damages is
not accepted.

If instrument-specific maintenance and servicing work defined by the supplier is to
be performed within the warranty period by the customer (maintenance) or by the
supplier (servicing) and these requirements are not met, claims for damages due
to the failure to comply with the requirements are rendered void.

Any further claims, in particular claims for consequential damages cannot be
made.

Consumables and damage caused by improper handling, poor installation or
incorrect use are excluded from this clause.

HACH LANGE GmbH process instruments are of proven reliability in many
applications and are therefore often used in automatic control loops to provide the
most economical possible operation of the related process.

To avoid or limit consequential damage, it is therefore recommended to design the
control loop such that a malfunction in an instrument results in an automatic
change over to the backup control system; this is the safest operating state for the
environment and the process.

27

Warranty and liability

28

Section 10 Contact

HACH Company
World Headquarters

P.O. Box 389
Loveland, Colorado
80539-0389 U.S.A.
Tel (800) 227-HACH
(800) -227-4224
(U.S.A. only)
Fax [phone]
[e-mail]
www.hach.com

HACH LANGE GMBH

Willstätterstraße 11
D-40549 Düsseldorf
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.de

HACH LANGE GMBH

Rorschacherstrasse 30a
CH-9424 Rheineck
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.ch

Repair Service in the
United States:

HACH Company
Ames Service
100 Dayton Avenue
Ames, Iowa 50010
Tel [phone]
(U.S.A. only)
Fax [phone]

HACH LANGE LTD

Pacific Way
Salford
GB-Manchester, M50 1DL
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.co.uk

HACH LANGE FRANCE
S.A.S.

8, mail Barthélémy Thimonnier
Lognes
F-77437 Marne-La-Vallée
cedex 2
Tél. [phone]
Fax [phone]
[e-mail]
www.hach-lange.fr

Repair Service in Canada:

Hach Sales & Service
Canada Ltd.
1313 Border Street, Unit 34
Winnipeg, Manitoba
R3H 0X4
Tel [phone]
(Canada only)
Tel [phone]
Fax [phone]
[e-mail]

HACH LANGE LTD

Unit 1, Chestnut Road
Western Industrial Estate
IRL-Dublin 12
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.ie

HACH LANGE NV/SA

Motstraat 54
B-2800 Mechelen
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.be

Repair Service in
Latin America, the
Caribbean, the Far East,
Indian Subcontinent, Africa,
Europe, or the Middle East:

Hach Company World
Headquarters,
P.O. Box 389
Loveland, Colorado,
80539-0389 U.S.A.
Tel [phone]
Fax [phone]
[e-mail]

HACH LANGE GMBH

Hütteldorfer Str. 299/Top 6
A-1140 Wien
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.at

DR. LANGE NEDERLAND
B.V.

Laan van Westroijen 2a
NL-4003 AZ Tiel
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.nl

HACH LANGE APS

Åkandevej 21
DK-2700 Brønshøj
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.dk

HACH LANGE LDA

Av. do Forte nº8
Fracção M
P-2790-072 Carnaxide
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.pt

HACH LANGE KFT.

Vöröskereszt utca. 8-10.
H-1222 Budapest XXII. ker.

Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.hu

HACH LANGE AB

Vinthundsvägen 159A
SE-128 62 Sköndal
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.se

HACH LANGE SP. ZO.O.

ul. Krakowska 119
PL-50-428 Wrocław
Tel. [phone]
Zamówienia: [phone]
Doradztwo: [phone]
Fax [phone]
[e-mail]
www.hach-lange.pl

HACH LANGE S.R.L.

Str. Căminului nr. 3,
et. 1, ap. 1, Sector 2
RO-021741 Bucureşti
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.ro

HACH LANGE S.R.L.

Via Rossini, 1/A
I-20020 Lainate (MI)
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.it

HACH LANGE S.R.O.

Zastrčená 1278/8
CZ-141 00 Praha 4 - Chodov
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.cz

HACH LANGE

8, Kr. Sarafov str.
BG-1164 Sofia
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.bg

HACH LANGE S.L.U.

Edificio Seminario
C/Larrauri, 1C- 2ª Pl.
E-48160 Derio/Vizcaya
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.es

HACH LANGE S.R.O.

Roľnícka 21
SK-831 07 Bratislava –
Vaj nory
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.sk

HACH LANGE SU
ANALİZ SİSTEMLERİ
LTD.ŞTİ.

Ilkbahar mah. Galip Erdem
Cad. 616 Sok. No:9
TR-Oran-Çankaya/ANKARA
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.com.tr

29

Contact

HACH LANGE D.O.O.

Fajfarjeva 15
SI-1230 Domžale
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.si

HACH LANGE OOO

Finlyandsky prospekt, 4A
Business Zentrum “Petrovsky
fort”, R.803
RU-194044, Sankt-Petersburg
Tel. [phone]
Fax. [phone]
[e-mail]
www.hach-lange.com

ΗΑCH LANGE E.Π.Ε.

Αυλίδος 27
GR-115 27 Αθήνα
Τηλ . [phone]
Fax [phone]
[e-mail]
www.hach-lange.gr

HACH LANGE D.O.O.

Ivana Severa bb
HR-42 000 Varaždin
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.hr

HACH LANGE MAROC
SARLAU

Villa 14 – Rue 2 Casa
Plaisance
Quartier Racine Extension
MA-Casablanca 20000
Tél. [phone]
Fax [phone]
[e-mail]
www.hach-lange.ma

30

Appendix A ModBUS Register Information

Table 3 Sensor ModBUS Registers

Tag Name Register # Data Type

pH measurement 40001 Float 2 R pH measurement
ORP measurement 40003 Float 2 R ORP measurement
Temperature measurement 40005 Float 2 R Temperature measurement
Raw pH measurement 40007 Float 2 R Raw pH measurement
mV Raw measurement 40009 Float 2 R mV Raw measurement
Raw Temperature measurement 40011 Float 2 R Raw Temperature measurement
Main Measurement Parameter 40013 Integer 1 R Main Measurement Tag
Temperature Measurement Param. 40014 Integer 1 R Temp Measurement Tag
Sensor Name[0] 40015 Integer 1 R/W Sensor Name[0]
Sensor Name[1] 40016 Integer 1 R/W Sensor Name[1]
Sensor Name[2] 40017 Integer 1 R/W Sensor Name[2]
Sensor Name[3] 40018 Integer 1 R/W Sensor Name[3]
Sensor Name[4] 40019 Integer 1 R/W Sensor Name[4]
Sensor Name[5] 40020 Integer 1 R/W Sensor Name[5]
Function code 40021 Integer 1 Function code
Next Step 40022 Integer 1 Next Step
Password 40023 Pass 1 R/W Password
Serial Number[0] 40024 Integer 1 R/W Serial Number[0]
Serial Number[1] 40025 Integer 1 R/W Serial Number[1]
Serial Number[2] 40026 Integer 1 R/W Serial Number[2]
pH/ORP toogle 40027 Bit 1 R/W pH/ORP toogle
Temperature unit toogle 40028 Bit 1 R/W Temperature unit toogle
pH display format 40029 Bit 1 R/W pH display format XX.X or XX.XX
Buffer Type 40030 Bit 1 R/W Buffer type

--- 40031 Integer 1 R/W Internal use

--- 40032 Integer 1 R/W Internal use
Averaging 40033 Integer 1 R/W Averaging
Automatic/Manual toogle 40034 Bit 1 R/W Automatic/Manual toogle
Manual Temperature unit 40035 Integer 1 R/W Manual Temperature unit
Manual Temperature 40036 Float 2 R/W Manual Temperature
50/60 Hz toogle 40038 Bit 1 R/W 50/60 Hz toogle
Output Mode 40039 Integer 1 R Internal use

--- 40040 Integer 1 R Internal use

--- 40041 Integer 1 R Internal use

--- 40042 Integer 1 R Internal use

--- 40043 Integer 1 R Internal use

--- 40044 Integer 1 R Internal use

--- 40045 Integer 1 R Internal use

--- 40046 Integer 1 R Internal use

--- 40047 Integer 1 R Internal use

--- 40048 Integer 1 R Internal use

--- 40049 Float 2 R Internal use

Lengt

h

R/W Description

31

ModBUS Register Information

Table 3 Sensor ModBUS Registers

Tag Name Register # Data Type

--- 40051 Float 2 R Internal use

--- 40053 Float 2 R Internal use
Temperature Offset 40055 Float 2 R Internal use
Temperature Offset unit 40057 Integer 1 R Internal use
pH Buffer 1 Measurement 40058 Float 2 R Internal use
pH Buffer 2 Measurement 40060 Float 2 R Internal use
ORP Buffer 1 Measurement 40062 Float 2 R Internal use
Output Mode 40064 Integer 1 R Internal use
Software version 40065 Float 2 R Software version
Serial Number String[0] 40067 Integer 1 R/W Internal use
Serial Number String[2] 40068 Integer 1 R/W Internal use
Serial Number String[4] 40069 Integer 1 R/W Internal use
Serial Number String[6] 40070 Integer 1 R/W Internal use
Serial Number String[8] 40071 Integer 1 R/W Internal use
Serial Number String[10] 40072 Integer 1 R/W Internal use

--- 40073 Integer 1 R Internal use

--- 40074 Integer 1 R Internal use
pH Offset 40075 Float 2 R pH Calibration Offset
pH Slope 40077 Float 2 R pH Calibration slope
ORP Offset 40079 Float 2 R ORP Calibration Offset
ORP Slope 40081 Float 2 R ORP Calibrtion slope
Calibration Return Status 40083 Integer 1 R Calibration Return Status

Time from last Calibration 40084 Integer 1 R

Time from start up 40085 Integer 1 R Time the system is running
Time to exchange Humidity bag 40086 Integer 1 R Time the humidity bag has been used
DriverVersion_float 40087 Float 2 R Driver version

--- 40089 Float 2 R Internal use
Measurement Logging Interval 40091 Integer 1 R/W Sensor Data logging interval
Temperature Logging Interval 40092 Integer 1 R/W Temperature logging interval
Electrode Impedance Meas. Interval 40093 Integer 1 R/W Impedance measurement interval
Glass Impedance Measurement 40094 Float 2 R Glass impedance measurement
Reference Impedance Measurement 40096 Float 2 R Reference impedance measurement

Lengt

h

R/W Description

Delay the isnstrument has been
calibrated last time

32