E2630-CO
Rev 14.12.2020
Sensor probe handling
The sensor probes of all types are equipped with a hydrophobic microporous PTFE filter to
protect the sensor from dust, dirt, and water drops. The filter may be replaced if it gets
strongly contaminated. To replace the PTFE filter, unscrew the M25 nut and remove the old
filter. Place a new filter into the nut and tighten it again.
NOTE! Never stab or press the filter near its center where the sensor is located since this
may damage the sensor. Do not remove the filter as it may cause the device to show
incorrect values.
The recommended orientation of the sensor probe is vertical with the sensor tip pointing
downwards. This prevents the possible accumulation of condensed water on the sensor
protection filter.
The electrochemical gas sensor replacement procedures
1.
Un-power detector;
2.
Unscrew sensor head cap;
3.
Carefully take out the sensor cell;
4.
Disconnect the first wire from the old sensor and connect to the same pin on the
new sensor;
5.
Disconnect the second wire from the old sensor and connect to the second pin on
the new sensor;
6.
Insert the new sensor into the sensor head and screw back the sensor head cap.
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