ParTech OxyTechw2 GAL User manual

INSTRUCTION MANUAL
OxyTechw² GAL Dissolved Oxygen Sensor

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OxyTechw² GAL Instruction Manual
Table of Contents
1 Foreword........................................................................................................................................................ 5
2 Introduction.................................................................................................................................................... 6
2.1 Manual Conventions.............................................................................................................................. 6
2.2 WaterWatch² Trademark........................................................................................................................ 6
2.3 Sco e of Manual.................................................................................................................................... 6
2.4 External Sensors................................................................................................................................... 6
3 Safety Precautions......................................................................................................................................... 7
3.1 General.................................................................................................................................................. 7
3.2 Electrical installation.............................................................................................................................. 7
3.3 O erating............................................................................................................................................... 7
3.4 Service and Maintenance...................................................................................................................... 7
3.5 End of Life Dis osal............................................................................................................................... 8
4 OxyTechw² GAL Sensor............................................................................................................................... 9
4.1 Sensor Overview................................................................................................................................... 9
4.2 Storage.................................................................................................................................................. 9
5 Mechanical Installation................................................................................................................................. 10
5.1 Mounting O tions................................................................................................................................. 10
5.2 Mounting Shaft..................................................................................................................................... 10
5.3 Handrail and Wall Brackets.................................................................................................................. 11
5.4 Customer Su lied Brackets............................................................................................................... 11
6 Electrical Installation.................................................................................................................................... 12
6.1 Electrical Installation............................................................................................................................ 12
6.2 Sensor Connections............................................................................................................................ 12
6.3 Extending Sensor Cables.................................................................................................................... 13
7 Sensor Configuration................................................................................................................................... 14
7.1 Sensor Config...................................................................................................................................... 14
7.2 Sensor Status...................................................................................................................................... 14
7.3 Add Sensor.......................................................................................................................................... 14
7.4 S:0x OxyTechw² GAL.......................................................................................................................... 14
7.4.1 S:0x Info....................................................................................................................................... 15
7.4.2 S:0x Remove............................................................................................................................... 15
7.4.3 S:0x Modbus Address.................................................................................................................. 15
8 Measurement Configuration......................................................................................................................... 16
8.1 Measurement Config............................................................................................................................16
8.2 Measurement Status............................................................................................................................ 16
8.3 Add Measurement............................................................................................................................... 16
8.4 M:0x – Measurement Channel............................................................................................................. 17
8.4.1 M:0x Info...................................................................................................................................... 17
8.4.2 M:0x Title..................................................................................................................................... 17
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OxyTechw² GAL Instruction Manual
8.4.3 M:0x Set Cal (100.0 %SAT) or M:0x Set Cal (25.0 ºC)................................................................17
8.4.4 M:0x Averaging............................................................................................................................ 17
8.4.5 M:0x Remove............................................................................................................................... 17
8.4.6 M:0x Dis lay Position..................................................................................................................17
8.4.7 M:0x Restore Defaults................................................................................................................. 17
8.4.8 M:0x Set Pressure....................................................................................................................... 18
8.4.9 M:0x Set Salinity.......................................................................................................................... 18
9 Calibration and Testing................................................................................................................................ 19
9.1 Tem erature........................................................................................................................................ 19
9.1.1 Overview...................................................................................................................................... 19
9.1.2 Calibrate Tem erature................................................................................................................. 19
9.2 OxyTechw² GAL.................................................................................................................................. 20
9.2.1 Zero Calibration (Service Mode Only)..........................................................................................20
9.2.2 Zero Checking.............................................................................................................................21
9.2.3 SPAN Calibration.........................................................................................................................21
10 Maintenance.............................................................................................................................................. 22
10.1 General cleaning................................................................................................................................ 22
10.2 Ins ection.......................................................................................................................................... 22
10.3 OxyTechw² GAL Refurbishment........................................................................................................ 22
11 S ares....................................................................................................................................................... 24
12 Technical Su ort...................................................................................................................................... 25
12.1 Returning Equi ment for Re air........................................................................................................ 25
13 Technical S ecification – OxyTechw² GAL................................................................................................26
13.1 Physical............................................................................................................................................. 26
13.2 Electrical............................................................................................................................................ 26
13.3 Measurement..................................................................................................................................... 26
13.4 Mounting O tions............................................................................................................................... 26
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OxyTechw² GAL Instruction Manual
1 Foreword
The OxyTechw² Sensor has been s ecifically designed for use with the 7300w² Monitor.
The OxyTechw² GAL Sensor has been designed to rovide highly reliable Dissolved Oxygen measurements
and em loys the traditional galvanic rinci le. The rugged 100 micron, HDPE membrane has been selected
to rovide exce tional resistance to damage. This, combined with Oxyguard's unique electrolyte and anode
material rovides long term stability of 3 years and longer without the need for sensor refurbishment or
membrane re lacement.
For installations in activated sludge lants (ASP's), we recommend that the sensor is installed using our
s ecially designed mounting system, with a flexible joint in the mounting shaft. The flexible joint moves the
sensor in the rocess, kee ing the membrane clean by reducing bio-fouling without the use of a com ressor
and with the added benefit of allowing rags to fall away from the assembly. This motion is similar to that
achieved by using a floating ball assembly, with the added advantage of lacing the sensor below the
surface of the liquor. This means that the sensor is below the level of the floating fats and greases that
accumulate at the surface and results in the Dissolved Oxygen reading being more re resentative of the
whole tank.
The OxyTechw² Sensor rovides the reliable, accurate measurement that is required to o erate activated
sludge lants at the o timum Dissolved Oxygen concentration, maintaining the balance between the running
costs of blowers and aerators and the need to roduce high quality effluent.
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OxyTechw² GAL Sensor

OxyTechw² GAL Instruction Manual
2 Introduction
2.1 Manual Conventions
All dimensions stated in this manual are in millimetres unless otherwise stated.
The manual has been written assuming the user has a basic knowledge of instrumentation and an
understanding of the ty e of measurement being made. Training in the use of the 7300w² Monitor and
sensors can be rovided, lease contact Partech for further information.
Icons have been used throughout this manual to draw your attention to recautions and useful notes.
They are categorised in the following way-
GENERAL NOTES – General notes of interest to the user.
GENERAL CAUTION – Used where caution is required to revent injury, damage, corru tion of
data, loss of calibration or invalidation of warranty etc.
INSTALLATION NOTES – General installation notes of interest to the installer.
ELECTRICAL CAUTION – Used where there is a danger of electric shock to the installer or end
user, or where caution is required to revent damage to the instrument.
MAINTENANCE NOTES – Used to highlight recommended maintenance rocedures and hel with
fault finding.
ENVIRONMENTAL NOTES – General notes on environmental issues, waste and dis osal.
2.2 WaterWatch² Trademark
WaterWatchw² is the family name for the w² range of Monitors and sensors. Sensors and instruments
designed for s ecific use with the 7300w² Monitor will be suffixed with the w² trademark.
2.3 cope of Manual
This manual describes the installation, configuration, testing and o eration of the OxyTechw² Sensor. Please
refer to 7300w² Monitor manual for standard functions of the 7300w² Monitor.
2.4 External ensors
External sensors refers to any sensors or instruments connected to the 7300w² Monitor.
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OxyTechw² GAL Instruction Manual
3 afety Precautions
3.1 General
Read the safety recautions carefully.
Check the delivery of your WaterWatch² sensor for damage. Any damage should be re orted to your su lier
as soon as ossible.
Use care when un acking the sensor. NEVER use shar instruments to o en the ackaging, as this can
cause damage to the sensor or cable.
Only use accessories s ecifically manufactured by Partech for use with this sensor.
Read the o erating instructions carefully before installing and o erating this sensor.
Kee the cable connections dry and free from contamination during installation.
Kee the sensor away from high voltage cables.
3.2 Electrical installation
Only suitably qualified ersonnel or com etent erson may install, o erate or re air this equi ment.
Please check the sensor has been terminated correctly. Incorrect termination may causes damage to the
sensor or monitor.
The WaterWatch² family of sensors are designed exclusively for use with the 7300w² Monitor. DO NOT
connect to other monitors.
Sensors need to be correctly addressed to the monitor before use. Please read the Quick Start and
Advanced Configuration sections of this manual for full details.
3.3 Operating
Because these sensors have a wide range of a lications, users must acquire the a ro riate knowledge to
use these sensors in their s ecific a lication.
Partech are always available to rovide advice and assistance in your a lication. Please contact Partech for
further information.
These sensors must be correctly calibrated before use. Please read the Advanced Configuration sections of
this manual for full details of calibration rocedures.
3.4 ervice and Maintenance
Before maintenance, this equi ment must be isolated or disconnected from HAZARDOUS LIVE voltages
before access.
Maintenance instructions for the OxyTechw² Sensor should be carried out as s ecified in this instruction
manual. Failure to carry out regular maintenance could invalidate the Warranty.
Services and re airs must be carried out by a Partech engineer. Partech can rovide a service contract for
your system. Please ask for details.
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OxyTechw² GAL Instruction Manual
3.5 End of Life Disposal
Equi ment should be recycled according to local regulations.
Any calibration solutions should be dis osed of as described in the Manufacture Safety Data Sheet
accom anied with the calibration solution.
Partech can rovide recycling and dis osal of your old Partech equi ment, and may also rovide the same
service for other manufactures equi ment when re laced with Partech equi ment.
Partech may rovide a trade-in o tion for new equi ment. Please contact Partech for further information.
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OxyTechw² GAL Instruction Manual
4 OxyTechw² GAL ensor
Whilst every attem t has been made to ensure that these instructions are correct, common sense and good
engineering ractice should always be used, as every installation can resent a new set of challenges and
difficulties. If you are in any doubt lease contact Partech or your local distributor for further information.
4.1 ensor Overview
The OxyTechw² GAL Sensors a galvanic oxygen sensor. It has an u er art with Cathode, Anode and
cable, and a lower art with membrane and and electrolyte. It roduces a tem erature com ensated millivolt
electrical out ut ro ortional to the oxygen artial ressure it senses. It also roduces a se arate
tem erature out ut for the 7300w² monitor to dis lay.
The OxyTechw² GAL Sensor is hermetically sealed, however, the bottom screw on membrane ca can be
o ened for electrolyte maintenance or to re lace the membrane should this be required. The to ca at the
cable entry end should not be o ened as it contains no user serviceable arts.
The measurement stability of the OxyTechw² GAL Sensor is very high. A robe measuring in air will maintain
accuracy even when subjected to a sudden 20º C tem erature change. The sensitivity of a robe measuring
in clean air at room tem erature will remain the same for at least 3 years, therefore it is not effected by
ageing as with other sensors, reducing the o erating cost and the need for intensive maintenance. A well
maintained sensor can have a life of 8 years without a membrane change.
4.2 torage
When not in use the sensor should be stored with its yellow rotective ca in lace over the sensor
membrane. For very long term storage, over twelve months, it is advisable to remove the electrolyte, rinse
and dry the sensor and store in this dry condition.
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Sensor
Identification
Serial
Number
Screw on
Membrane Ca
for refurbishment
ModTechw²
Cable

OxyTechw² GAL Instruction Manual
5 Mechanical Installation
Reliable accurate measurement from any instrument can only be achieved by correct installation of the
measuring device; in the case of the OxyTechw² Sensors, this is articularly im ortant. If you are in
any doubt contact Partech or your local distributor for advice.
Below are some oints that should be considered before starting to install the sensor, or in the event
an installed sensor gives unreliable measurements-
•Ensure that the sensor is immersed dee ly enough into the sam le.
•The sensor should be mounted in such a way as to allow easy access for calibration and
maintenance. It should be ossible to remove the sensor from the rocess without the need to shut
the rocess down.
•The sensor must be monitoring a sam le of the rocess that is re resentative of the whole rocess.
•To allow a single technician to calibrate and maintain the system the sensor should be laced within
sight of the 7300w² Monitor. Although cable runs of u to 100 metres are ossible o erational
roblems can be caused.
•The OxyTechw² GAL Sensor should NOT be mounted with the membrane facing u .
•Where ossible, angle the sensor so that it is ointing down stream, this will allow any “ragging” to
be removed by the flow ast the sensor.
•Do not install where there is a likelihood of freezing.
5.1 Mounting Options
Partech offer a range of mounting brackets for the installation of the OxyTechw² Sensor, which will allow the
user to a ly the sensor in a wide variety of locations. Drawings of the brackets are shown in the relevant
“O tional Accessories” sections of this manual. When assessing mounting o tions, attention should be aid
to the accessibility of the sensor for calibration and maintenance, stability of the sensor in the flow conditions
resent on site and to ensuring the sensor is fully submerged at all times.
5.2 Mounting haft
An o tional mounting shaft fitting can be used to allows the OxyTechw² Sensorsto be fitted to a number of
mounting accessories. Partech su ly mounting shafts manufactured from 2” nominal bore grey ABS i e in
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