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Turn the sensor clockwise until the end of the end position is triggered (see point 4).
Reconnect the electrical connection (see point 3).
Close the rear cover of the sensor compartment and tighten the two screws (see point 1).
When the instrument is switched on, it is possible to check the correct operation of the new sensor in the "
Sensor Diagnostics
" menu.
It is normal for a sensor that has just been installed to emit a "common error": simply wait for some time for the sensor's polarisation to
stabilise. In the following table, the minimum stabilisation time is indicated for each sensor.
CODE
DETECTED GAS
SETTLING TIME
CO+H
2
Flex Sensor
CO
Carbon
monoxide
2 hours
(1)
Flex Sensor CO+H
2
low range
CO
Carbon
monoxide
2 hours
(1)
Flex-Sensor CO 100,000 ppm
CO
Carbon
monoxide
2 hours
(1)
Flex-Sensor CO 20,000 ppm
CO
Carbon
monoxide
2 hours
(1)
NO Flex Sensor
NO
Nitrogen Oxide
48 hours
(2)
Flex Sensor NO low range
NO
Nitrogen Oxide
48 hours
(2)
NO
2
Flex Sensor
NO
2
Nitrogen dioxide
2 hours
(1)
Flex Sensor NO
2
low range
NO
2
Nitrogen dioxide
2 hours
(1)
SO
2
Flex Sensor
SO
2
Sulphur dioxide
2 hours
(1)
Flex Sensor SO
2
low range
SO
2
Sulphur dioxide
2 hours
(1)
CxHy Flex Sensor
0-5.00% vol. in reference to CH
4
CxHy
Unburnt
hydrocarbons
1/2 hour
(3)
CO
2
Flex Sensor 0- 20% vol
CO
2
Carbon dioxide
2 hours
(1)
CO
2
Flex Sensor 0- 50% vol
CO
2
Carbon dioxide
2 hours
(1)
H
2
S
500 ppm Flex Sensor
H
2
S
Hydrogen
sulphide
2 hours
(1)
Notes:
(1)
2 hours are required for stabilisation.
(2)
48 hours are required for stabilisation; if the sensor is equipped with an external polarisation battery, the stabilisation time is increased to
2 hours.
(3)
1/2 an hour is required for stabilisation.
When rotating the sensor, be careful not to exert pressure on the printed circuit board
above: only exert pressure on the plastic surround.
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