E Instruments BTU900 - Page 56

56
K800000000EJ 020650A0 170512
Turn on the instrument to check the new sensor works correctly through the menu “Sensor Troubleshooting”.
It is normal if a newly installed sensor gives a 'current error': it is necessary to wait some time, so that the sensor
polarization can settle. The table here below shows the minimum settling time for each sensor.
Note:
(1) 2-Hour settling time is required.
(2) 48-Hour settling time is required; should the sensor be equipped with an external polarisation battery, the settling
time is reduced down to 2 hours.
CODE MEASURED GAS POSITION SETTLING TIME
FLEX-Sensor O 2
Cod. AAC SE15
O 2
Oxygen
S1 2 hours
(1)
FLEX-Sensor CO (Low H 2 )
Cod. AAC SE20
CO
Carbon Monoxi de
S2 2 hours
(1)
FLEX-Sensor NO
Cod. AAC SE10
NO
Nitrogen Oxide
S3 48 hours
(2)
9
Reconnect the sensor (See point 3).
10
Close the back door of the sensor compartment again, and tighten screws again (See point 1).
8
Rotate the sensor clockwise until you hear a click (See point 4).
ATTENTION
While rotating the sensor, take care not to apply any pressure onto the printed circuit above: apply
pressure onto the plastic body only.
1
2
3
4
5
6
7
8