E Instruments BTU900 Manual page 56

Portable combustion gas analyzers
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1
Rotate the sensor clockwise until you hear a click (See point 4).
8
ATTENTION
While rotating the sensor, take care not to apply any pressure onto the printed circuit abov e: apply
pressure onto the plastic body only.
Reconnect the sensor (See point 3).
9
2
Close the back door of the sensor compartment again, and tighten screws again (See point 1).
10
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.
3
CODE
FLEX-Sensor O
Cod. AAC SE15
FLEX-Sensor CO (Low H
Cod. AAC SE20
4
FLEX-Sensor NO
Cod. AAC SE10
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
5
time is reduced down to 2 hours.
6
7
8
56
MEASURED GAS
O
2
2
Oxygen
)
CO
2
Carbon M onoxi de
NO
Nitrogen Oxide
POSITION
SETTLING TIME
S1
S2
S3
(1)
2 hours
(1)
2 hours
(2)
48 hours
K8000 000 00EJ 02 065 0A0 17 051 2

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