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4.5.2 Charcoal Filter
If required, an optional charcoal filter as protection against catalytic poisons can be mounted
on the sensor. This charcoal filter may be used only in Hydrogene and Methane
environments.
??Remove the filter cap as described in 4.5.1.
??Unplug the sensor. charcoal
??Remove the olf charcoal filter and the adhesive
tape completely form the sensor top. adhesive tape
??Fix the adhesive tape on the backside (smoother
surface) of the charcoal filter and mount it on top
of the sensor. sensor
??Insert the sensor and replace the filter cap as
described in 4.5.1.
4.6 Sensor Replacement
If the sensor has lost to much sensitivity, the Compur Ex plus will give an error message
“Err1” or “Err2”, when atempting a gas calibration.
“Err1” indicates that the sensor can still be calibrated but it should be replaced soon.
“Err2” indicates that the sensor should be replaced immediately.
How to exchange the sensor, has been described in 4.5.2. After sensor replacement you
should perform a gas calibration (see 4.2).