TELEDYNE OLDHAM SIMTRONICS OLCT 80 d, Руководство пользователя

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OLCT 80
GAS TRANSMITTER
USER MANUAL
76 NPO80GB
Revision F.1
9.2 Replacing the sensor cell
(Combustible, oxygen, toxic and XPIR sensors)
A defective sensor should only be replaced using an identical sensor (same gas, same
range).
9.2.1 Replacement frequency
The sensor back needs to be replaced any time it is not possible to perform zeroing, gas
calibration or preventative calibration.
9.2.2 Replacing the sensor
Step Action
1. Gather the following items:
•
New sensor pack.
•
4- and 5-mm hex key.
•
Calibration kit (bottle, hood, etc.).
2. Block the transmission of alarms within the central system.
3. Disconnect the OLCT 80 from its power source.
4. Unscrew the locking screw from the detector head and rotate the detector head 30° counter-clockwise.
5. Unplug the connector and remove the defective detector head.
6. Replace the used detector head with an identical new one.
7. Reverse the procedure to reassemble the device; insert and tighten the locking screw.
8. Restore the signal from the
OLCT 80
to the central system.
9. Reset the
OLCT 80
's wear rate to zero as described under
Sensor replacement
on page 45.
10. Perform a gas sensitivity test as explained on page 68.
9.2.3 Zeroing and adjusting sensitivity (calibration)
Refer to the instructions under
Sensor calibration on page 44.
9.3 Cross gas factors for combustible gases
9.3.1 Poison resistant catalytic sensor, type 4F
Gas Methane Pentane Hydrogen
Acetone 2,24 1,03
Acetylene 1.91
Ammonia 0,79 0,36
Benzene 2,45 1,13
n-Butane 2,16 0,99