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OxyTechw² GAL Instruction Manual

6  Electrical Installation

6.1  Electrical Installation

Unscrew the two cover screws on the lower panel of the 7300w² Monitor to reveal the Terminals. Each 
terminal strip is labelled as illustrated below. (This equipment must be isolated or disconnected from 
HAZARDOUS LIVE voltages before access).  Refer to the 7300w² Monitor user manual for full description of 
all the terminals within the monitor. 

The maximum size wire that can be terminated is 2.5mm² CSA. All the connections are via removable 
Plug/Socket terminals. To disengage the terminal strip, simply pull down to release. 

6.2  Sensor Connections

When routing the sensor cables, please ensure the cable is separated from any mains cables. Although the 
Partech w² sensors have a high resistance to interference, separation of mains and data cables is good 
practice and should always be followed where practical. 

All sensors in the w² range communicate with the monitor using the ModTechw² Protocol. This protocol has 
been specifically designed to take advantage of the advanced features and diagnostics designed into the w² 
range of sensors. 

Note- These sensors can 

NOT

 be used with other monitors that are not

included in the w² family. 

All sensors within the w² family of instruments are connected to the
7300w² Monitor using the same 4 wire configuration.

RED and BLACK wires provide the 12VDC supply to the sensor.

WHITE and GREEN provide data communication. 

A maximum of two sensors can be directly connected to the standard
7300w² Monitor, additional sensors can be added using the optional
expansion boxes available separately. 

Remove the 4-way connector from the 7300w² Monitor by pulling downwards to disconnect for easy access 
to the connections. Connect the sensor wires as follows-

(Terminals from left to right on the 4 way connector)

Term 1 (Left) 

-

RED (+12V)

Term 2 

-

Black (0V) 

Term 3

-

White (Data A)

Term 4 (Right) -

Green (Data B)

Always connect the screen drain wire with the Black (Term 2).

Always use Bootlace ferrules when terminating the sensors to ensure a good connection
to the terminals. 

Page 12 of 28

224083IM-Issue 04 20/03/2018

Summary of Contents for OxyTechw2 GAL

Page 1: ...INSTRUCTION MANUAL OxyTechw GAL Dissolved Oxygen Sensor...

Page 2: ...This page is intentionally left blank...

Page 3: ...Options 10 5 2 Mounting Shaft 10 5 3 Handrail and Wall Brackets 11 5 4 Customer Supplied Brackets 11 6 Electrical Installation 12 6 1 Electrical Installation 12 6 2 Sensor Connections 12 6 3 Extendin...

Page 4: ...1 1 Overview 19 9 1 2 Calibrate Temperature 19 9 2 OxyTechw 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...

Page 5: ...e mounting shaft The flexible joint moves the sensor in the process keeping the membrane clean by reducing bio fouling without the use of a compressor and with the added benefit of allowing rags to fa...

Page 6: ...TION 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 preven...

Page 7: ...the 7300w 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 f...

Page 8: ...cture Safety Data Sheet accompanied with the calibration solution Partech can provide recycling and disposal of your old Partech equipment and may also provide the same service for other manufactures...

Page 9: ...rolyte maintenance or to replace the membrane should this be required The top cap at the cable entry end should not be opened as it contains no user serviceable parts The measurement stability of the...

Page 10: ...Monitor Although cable runs of up to 100 metres are possible operational problems can be caused The OxyTechw GAL Sensor should NOT be mounted with the membrane facing up Where possible angle the senso...

Page 11: ...nd is located using locking collars To remove the mounting shaft remove the locking thumb screw and lift the shaft from the bracket Care should be taken to ensure that the sensor can be reached from t...

Page 12: ...ng the ModTechw Protocol This protocol has been specifically designed to take advantage of the advanced features and diagnostics designed into the w range of sensors Note These sensors can NOT be used...

Page 13: ...ngths Junction boxes are also useful for local connection of sensors close to the sample point This allows for easy replacement of sensors without the need to pull back cables to the monitor The junct...

Page 14: ...s status 7 3 Add Sensor 1 From the MAIN MENU screen select SENSOR CONFIG by pressing and press 2 The SENSOR MENU should be displayed Press to highlight ADD SENSOR and press 3 The Monitor will now sea...

Page 15: ...a new sensors the old sensor must be removed and the new sensor installed If a sensor in a multiple configuration is no longer required all traces from the menus can be removed You will be prompted w...

Page 16: ...MENU should be displayed Press to highlight ADD MEASUREMENT and press 2 All available measurements will be displayed in a list Press or to select the required measurement 3 Press to select the measur...

Page 17: ...his option is only available on the SAT measurement This allows the user to impose averaging on the measured value this is used to reduce the speed of reaction to the process changes The value can be...

Page 18: ...n pressure in the environment of the sensor 8 4 9 M 0x Set Salinity Important Note This option is only available on the mg l or PPM measurement This option allows the user to set a fixed salinity valu...

Page 19: ...ked at any time by comparing it with a known temperature reference after a period of temperature equilibration If for any reason the temperature is deemed to be inaccurate or needs to be different fro...

Page 20: ...ing sensor refurbishment it is connected to the 7300 monitor without the electrolyte filling solution present the reading displayed will check the integrity of the sensor and whether there has been wa...

Page 21: ...g this period variations caused by air flow can cause inaccuracies in the calibration It is advisable to cover the sensor in windy conditions From the 7300w Monitor navigate to the Calibration menu as...

Page 22: ...y out the replacement The Membrane is a D10MC membrane and comes with grey backing paper These sensors are type 3 sensors and denoted by the 3 dots on the top part near the cable gland and have a type...

Page 23: ...not the grey backing paper Tighten the ring ensuring the membrane does not wrinkle The membrane must be flat if it wrinkles remove discard and refit a new membrane 7 Fill a new cap to the brim with el...

Page 24: ...echw GAL Instruction Manual 11 Spares 225690 OxyTechw GAL Sensor Refurbishment kit Contains 2 X 50ml Electrolyte 5 membranes Scotch Brite Pad Instruction Manual 224083IM Issue 04 20 03 2018 Page 24 of...

Page 25: ...ability to the application 12 1 Returning Equipment for Repair If equipment needs to be returned to Partech for repair or service the following address should be used SERVICE DEPARTMENT ROCKHILL BUSIN...

Page 26: ...rd 100 metres Max Pressure Rating Depth 2 Bar 13 2 Electrical Supply 12VDC from 7300w Monitor Sensor Communication Partech w Protocol Specifically developed for WaterWatch range 13 3 Measurement Range...

Page 27: ...OxyTechw GAL Instruction Manual 224083IM Issue 04 20 03 2018 Page 27 of 28...

Page 28: ...Partech Instruments Rockhill Business Park Higher Bugle St Austell Cornwall PL26 8RA UK Tel 44 0 1726 879800 Email info partech co uk Web www partech co uk...

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