Fine Dust Filter; Gas Sensors - Ecom EN3 Instruction Manual

11.1 Fine dust filter

The fine dust filter should be checked every time the instrument is used.
Procedure for testing:
NOTE
Change the fine dust filter once the filter has a grey colour. Replace
the fine dust filter if the filter has a gray colour of 2 ... 3 on the soot
comparison scale.

11.2 Gas sensors

The sensors get calibrated with the reference gas fresh air by each switch-
on. New sensors age along the operation time because of the wearing of the
reagents (oxygen sensor) and due to soiling respectively exceeding
concentrations beyond the nominal measurement range (toxic sensors).
Their state of the sensors is permanently checked by the instrument. The
output values of the sensors are listed in the menu "Control". The reference
values of the sensors are:
Sensor
O2
Others
Page 62
• unscrew the cap
• check the condition of the particle filter
• replace the cap
Reference value output voltage
12000 mV
0 mV (+/- 150 mV)
ecom-EN3