5.5
Sensor replacement procedure
When the need for replacement is signalled via Modbus communication (coil 311 SensorExpired), proceed as follows:
• Acquire a pre-calibrated sensor module with the same part number as the one mounted on the detector.
• Disconnect power
Built-in version
• Open the cover
• Disconnect the sensor connector J7
• Unscrew the sensor module from the case
• Screw in the new sensor module
• Plug-in the sensor connector to terminal J7
• Close the cover
Remote version
Loosen the cap off the cable gland so that the cable is free
to move inside the cable gland.
Completely unscrew the cable gland.
In the event of difficulties when loosening, use pliers.
Pull out the electronic board from its housing by pulling the
remote sensor cable
Unplug the sensor connector from the electronic board
Unscrew the sensor module from the tube so as to separate
it from the other parts of the device
Pull out the sensor module
Make sure the new sensor module has the same part
number as the one just removed.
Mount the sensor module in the opposite order to the
above instructions for removal.
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