Hach Ultra POLYMETRON 9182 User manual

Operator Manual
POLYMETRON 9182
Oxygen analyzer (ppb)
221=191=082 - Revision G - 20/11/2007

Restriction of Hazardous Substances
N
o
t
e:
The following only applies to exports of the product into the People’s Republic of China.
Marking
Products contain toxic or hazardous substances or elements.
Environment Protection Use Period Marking (years).
Toxic or Hazardous Substances and Elements
Part Name
Lead
(Pb)
Mercury
(Hg)
Cadmium
(Cd)
Hexavalent
Chromium
(Cr VI)
Polybrom
Biphenyls
(PBB)
Polybrom
Diphenyls
(PBDE)
Transmitter box X
CPU PCB O O
Power PCB O O
Relay PCB O O
Module O
Probes O
Cable O
O: Indicates that this toxic or hazardous substance contained in all homogeneous material for
this part is below the limit requirement
X: Indicates that this toxic or hazardous substance contained in at least one of the
homogeneous materials used for this part is above the limit requirement

Oxygen analyser (ppb) -9182 -
i
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.
!

Oxygen analyser (ppb) -9182 -
ii
COPYRIGHT
All rights reserved. No part of this publication may be
reproduced,storedinaretrievalsystem, or transmitted, inany
form or by any means, electronic, mechanical, photocopying,
recording or otherwise, without prior permission ofHach Ultra
Analytics.
Hach Ultra Analytics
Hach Ultra Analytics can take no responsability for installation
and/or use of its equipment if this is not done in accordance
with the appropriate issue and/or amendment of the relevant
manual.
The user of this manual should ensure that it is appropriate in
all details to the exact equipment to be installed and/or
operated. If in doubt, the user should contact Hach Ultra
Analytics for advice.
WARNING
To maintain safety standards, regular maintenance,
calibration and operation of this equipment by qualified
personnel is essential. Read and understand Instruction
manual completely before operating or servicing. If any
further details are required which do not appear in this
manual contact Hach Ultra Analytics or their agent.

Oxygen analyser (ppb) -9182 -
iii
Warnings
Changing the programming language
The programming language is English when factory-programmed, when changing
the software version and when loading the default values. To change the language
follow the procedure below (example for French):
(Press 3 times)
!
AVERAGE
CODE
SOFT ISSUE
DEFAUT VAL.
ADJUST mA
CONFIGURATION
POLYMETRON
SERVICE
Select
DISPLAY
CALIBRATION
MAINTENANCE
PROGRAMMING
MENU
Select
SERVICE
CONC : ppb/ppm
TEMP. : °C
PRESSION : mmHg
LANGUE :
AFFICHAGE
Choix
F
CONC : ppb/ppm
TEMP. : °C
PRESSURE : mmHg
LANGUAGE :
DISPLAY
Select
GB
CONC : ppb/ppm
TEMP. : °C
PRESSURE : mmHg
LANGUAGE :
DISPLAY
Select
F
6.59
ppb
23.2 °C O2
Disp2 Menu Enter
Enter
Enter
Esc

Oxygen analyser (ppb) -9182 -
iv
Programming the mains supply frequency:
When your programming language is chosen, you may change the mains supply
frequency if necessary. This change occurs at the first switching on and
afterresetting the instrument. Follow the procedure below:
AVERAGE
DISPLAY
CODE
SOFT ISSUE
DEFAULT VAL.
ADJUST mA
POLYMETRON
SERVICE
Select
CONFIGURATION
CALIBRATION
MAINTENANCE
PROGRAMMING
MENU
Select
SERVICE
FREQ :
CONFIGURATION
Select
50Hz
6.59
ppb
23.2°C O2
Disp2 Menu Enter
Enter
FREQ :
CONFIGURATION
60Hz
Enter
!
Enter
Reset
the instrument

Oxygen analyser (ppb) -9182 -
Table of contents
Page
Warnings....................................................................................................................................iii
Chapter 1: Introduction............................................................................................................. 1-1
1.1 Introduction........................................................................................................ 1-1
1.2 Principle of operation........................................................................................... 1-1
1.3 Main characteristics............................................................................................ 1-3
1.4 Technical characteristics..................................................................................... 1-3
1.5 Dimensions........................................................................................................ 1-6
Chapter 2: Description of the analyser...................................................................................... 2-1
2.1 Analytical part .................................................................................................... 2-1
2.2 Hydraulic mounting............................................................................................. 2-2
2.3 Transmitter......................................................................................................... 2-3
2.3.1 Presentation of the transmitter................................................................. 2-3
2.3.2 Application fields .................................................................................... 2-5
2.3.3 Standard mounting possibilities (use of the red clamping bow).................... 2-5
Chapter 3: Installation of the instrument................................................................................... 3-1
3.1 Unpacking.......................................................................................................... 3-1
3.2 Inspection.......................................................................................................... 3-1
3.3 Mounting............................................................................................................ 3-1
3.4 Location............................................................................................................. 3-1
3.5 Electrical connections......................................................................................... 3-2
3.6 Description of the different terminals..................................................................... 3-3
3.7 Mains connection ............................................................................................... 3-4
3.8 Starting the transmitter........................................................................................ 3-4
3.9 Adjusting the display contrast.............................................................................. 3-4
Chapter 4: Using the instrument................................................................................................ 4-1
4.1 Front panel keys................................................................................................. 4-1
4.2 Displays 1 to 4 (live displays)............................................................................... 4-2
4.3 Description of the function keys ........................................................................... 4-3
4.4 Icons ................................................................................................................. 4-3
4.5 Enter or modify a value........................................................................................ 4-4
4.6 Warnings ........................................................................................................... 4-4
Chapter 5: Programming the transmitter.................................................................................. 5-1
5.1 Main menu......................................................................................................... 5-1
5.1.1 Calibration Menu..................................................................................... 5-2
5.1.2 MAINTENANCE Menu............................................................................. 5-3
5.1.3 PROGRAMMING Menu........................................................................... 5-3
5.1.3.1 MEASURE Menu ....................................................................... 5-4
5.1.3.2 ALARMS Menu.......................................................................... 5-5
5.1.3.3 mA OUTPUTS menu................................................................... 5-8
5.1.3.4 RS485 Menu.............................................................................5-11
5.1.4 SERVICE Menu.....................................................................................5-12
5.1.4.1 AVERAGE Menu.......................................................................5-12
5.1.4.2 DISPLAY Menu.........................................................................5-13
5.1.4.3 CODE Menu .............................................................................5-14

Oxygen analyser (ppb) -9182 -
5.1.4.4 SOFT VERSION Menu...............................................................5-15
5.1.4.5 DEFAUT VAL. Menu..................................................................5-15
5.1.4.6 mA ADJUST Menu ....................................................................5-16
5.1.4.7 CONFIGURATION Menu ............................................................5-17
5.1.4.8 POLYMETRON Menu................................................................5-17
Chapter 6: Calibrating temperature compensation................................................................... 6-1
6.1 Calibration of the temperature sensor.................................................................... 6-1
6.1.1 Automatic temperature compensation....................................................... 6-2
6.1.2 Manual temperature compensation........................................................... 6-3
6.2 Calibration of the measurement............................................................................ 6-4
6.2.1 Slope calibration in the air + electrical zero............................................... 6-4
6.2.2 Slope calibration in the air + chemical zero............................................... 6-5
6.2.3 Slope process calibration + electric zero................................................... 6-6
6.2.4 Slope process calibration + chemical zero................................................ 6-7
Chapter 7: Start up, maintenance and troubleshooting............................................................ 7-1
7.1 Start up ............................................................................................................. 7-1
7.1.1 Assembling the probe ............................................................................. 7-1
7.1.2 Probe connection.................................................................................... 7-3
7.1.3 Main power supply connection................................................................. 7-3
7.1.4 Starting up the analyser .......................................................................... 7-3
7.2 Changing the membrane...................................................................................... 7-4
7.2.1 Dismounting the membrane..................................................................... 7-5
7.2.2 Mounting the new membrane................................................................... 7-6
7.3 Oxygen electrode rejuvenation procedure.............................................................. 7-7
7.4 Functional troubleshooting................................................................................... 7-7
7.5 Electrical troubleshooting ...................................................................................7-11
Chapter 8: Error messages........................................................................................................ 8-1
Appendix 1: Pressure conversion table ..................................................................................A1-1
Appendix 2: Temperature conversion table............................................................................A2-1
Appendix 3: Default values.....................................................................................................A3-1
Appendix 4: Detailed cable connections................................................................................A4-1
Appendix 5: Security data sheet.............................................................................................A5-1
Appendix 6: Spare parts list....................................................................................................A6-1
Appendix 7: RS485 MODBUS-JBUS addressing.......................................................................A7-1

Oxygen analyser (ppb) -9182 -
1-1
Chapter 1: Introduction
1.1 Introduction
The 9182 oxygen analyser is a one-channel analyser for the measurement of dissolved oxygen in
the boiler feedwater, economizers, condensers and more generally all thermal equipment using
water as a heat transfer liquid.
1.2 Principle of operation
The measurement of dissolved oxygen is based on the well-known Clark cell principle.
An oxygen-permeablemembrane isolates the electrodes fromthe sample water, thus obviatingthe
need for sample conditioning. Other reducible or oxidizable ions do not interfere, because they
cannot pass through the gas-permeable membrane.
A constant voltage supply powers two electrodes, maintaining each at a constant potential.
A gold working electrode (cathode) reduces the dissolved oxygen to hydroxyl ions:
O2+ 2H2O + 4e-→4OH-
A large silver counter electrode (anode) provides the oxidation reaction which occurs on its
surface:
4Ag++ 4Br-→4AgBr + 4e-
The reduction of oxygen is the current limiting reaction, thus making the cell current linearly
proportional to the dissolved oxygen concentration.
Electrochemical reactions and diffusion rates are temperature-sensitive. The measuring cell,
therefore, is equipped with a temperature sensor which allows an automatic temperature
compensation.

Oxygen analyser (ppb) -9182 -
1-2
Principle of oxygen cell
1
2
3
5
2
6
7
4
2
7
8
9
1 : Assembled electrode 6 : Membrane holder
2 : Electrolyte 7 : Membrane
3 : Probe body 8 : Cathode
4 : Filling hole 9 : Sample
5 : Anode

Oxygen analyser (ppb) -9182 -
1-3
1.3 Main characteristics
3Range 0-2 ppm
3Calibration in the air
3Temperature compensation
3Programmable alarm levels, outputs on relays
3 4-20 mA, 0-20 mA analogue outputs (standard) and RS485 (option)
3Wall-, panel-and tubing mounting
1.4 Technical characteristics
SAMPLE
Number of channels 1
Temperature 0-45 °C (32-113 °F)
Working pressure Atmospheric pressure
Flowrate 4...10 l/h
ELECTRICAL CHARACTERISTICS
Mains •Standard version:
100...240 VAC -50/60 Hz
•Low voltage version:
13...30 VAC 50/60 Hz
18...42 VDC
Power consumption 25 VA
Connections 2,5 mm² screw terminal
Fuse 5 x 20 mm cartridge -T2AL -250V

Oxygen analyser (ppb) -9182 -
1-4
ANALYSIS
Measuring range 0...2 ppm
Sensibility ≤0,5 ppb
Reproducibility ± 0,5 ppb or ± 2% whichever the greater
Detection limit ≤1 ppb
Response time (90 %) ≤3 min
Ambient temperature -20...60 °C (-4...140 °F)
Relative humidity 10...90%
TRANSMITTER
Display Display in concentration units
Display of the direct, concentration
dependent cell current in µA
Display of the sample temperature in °C/°F
Programming via menus
Units nA, µA, ppb-µg/l, ppm-mg/l, °C, °F
Calibration Electrical zero, chemical zero, slope calibration
in the air, slope process calibration by
comparison with a laboratory measurement
Interferences Any gas liable to reduce to a potential
> -850 mV
Analogue outputs 2 x 0/4... 20 mA isolated from input signal, 800
Ohms load maximum
-for the measure or for the temperature
-mode: linear, bi-linear
-accuracy: 0,1 mA
Alarms Number: 4
-Functions: alarm -system alarm -timer
-Hysteresis: 0...10%
-Delay: 0...999s
-Breaking power:250 VAC, 3A maximum
30 VDC, 0,5A maximum
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.

Oxygen analyser (ppb) -9182 -
1-5
Temperature compensation Automatic in the range of 0...45 °C
(32...113 °F)
RS485 (option) Speed: 300...9600 baud
Insulation: galvanic
Station number: 32 maximum
Transmitter protection IP65 (NEMA 4X in option)
Measurement category I (overvoltage less than 1500 V)
Error reports Cell current > 999 µA
Sample temperature > 45 °C (113 °F)
or < 0 °C (32 °F)
Ambient temperature > 45 °C or < 0 °C
(32...113 °F) during air calibration
Slope calibration error
Zero calibration error (offset)
ELECTROMAGNETIC COMPATIBILY
European standards EN 61326-1997 and EN 61326 A1-1998
(Industrial level for immunity)
Low voltage standard IEC61010-1
UL and CSA agreement File E226594
MATERIALS
Working electrode Cathode: gold
Counter-electrode Anode: silver
Membrane holder Noryl
Membrane PFA
Transmitter Aluminium + polyester painting
Probe body Noryl
Probe with optional immersion Stainless steel 316L

Oxygen analyser (ppb) -9182 -
1-6
MAINTENANCE
Approximative membrane lifetime ≈6 months depending on the sample
Cleaning Clean the instrument with a soft tissue and
without any aggressive agent
OPERATING CONDITIONS
Ambient temperature -20...+60 °C
Relative humidity 10...90 %
Power supply voltage fluctuation ± 10 %
Over voltage category 2
Pollution degree 2 (as CEI 664)
Altitude <2000 m
Measurement category I (overvoltage less than 1500 V)
1.5 Dimensions
(Dimensions are in mm and [in inches])
polymetron
polymetron

Oxygen analyser (ppb) -9182 -
2-1
Chapter 2: Description of the analyser
2.1 Analytical part
1
2
3
4
5
6
Figure 2-1: Electrode cross-section Figure 2-2: Complete probe
1 : Connector 1 : Adjusting nut
2 : Anode holder 2 : Electrode
3 : Anode 3 : Probe body
4 : Cathode holder 4 : Membrane
5 : Cathode 5 : Filling screw
6 : Temperature sensor 6 : Gasket

Oxygen analyser (ppb) -9182 -
2-2
2.2 Hydraulic mounting
(Dimensions are in mm [inches])
1 : Cable 5 : Cell
2 : Shrink ring 6 : 1/4" NPT connector (not provided)
3 : Assembled probe 7 : M4 screws (not provided)
4 : Probe gasket 8 : 1/4" NPT connector (not provided)

Oxygen analyser (ppb) -9182 -
2-3
2.3 Transmitter
2.3.1 Presentation of the transmitter
Esc
Enter
18.6 °C ppb
2.10
Polymetron
O2
Disp2
Menu
S1
S2
S4
S3
The electronic unit amplifies the signal of the amperometric measuring cell and converts it into a
direct digital readout in ppm, mg/l, ppb, µg/l, °C and °F. The transmitter comprises the following
items:
nPotentiostat which maintains the working electrode potential constant
nAmperometric measuring module
nAnalog multiplexer
nMicroprocessor unit
The analog multiplexer allows measurements to be acquired from the measuring cell, temperature
sensor and internal checkpoints. Further, the microprocessor operates the relays, the RS485
interface (optional) and the analog outputs.
The unit has a built-in concentration-autoranging feature and a microprocessor-operated
calibration routine.
The output of the potentiostat is monitored for possibleoverdriving of the potentiostat-outputstage.
Thiscondition can occur with the connectionsto the measuring cell open, inoperableelectrodes or
a defective reference electrode.

Oxygen analyser (ppb) -9182 -
2-4
Transmitter synoptic below is:
1 : Programmable potentiostat 6 : Auxiliary input
2 : Polarization voltage amplifier 7 : Multiplexer
3 : Reversing switch for a 2 or 3 electrode
operation. In the 9181 the configuration is
2electrodes
8 : A/D converter
4 : Temperature measurement circuit 9 : Microprocessor
5 : Measurement circuit current amplifier