Control Unit Models 9010 LCD and 9020 LCD
36
Calibration Procedures
MSA
GB
- Confirm the set value by pressing ENTER: The display shows P3 [calibration of the full scale].
- Press the ENTER key to confirm the intention to carry out the calibration: The display alter-
nates showing P3 and the indication related to the signal transmitted by the sensor.
- Cause the calibration gas to flow until the indication in the display is stabilised.
- Confirm by pressing ENTER: The display shows P4.
- Press the ENTER button: The display alternates showing P4 and the indication related to the
signal transmitted by the sensor.
- After confirming that the calibration has been performed, remove the gas from the sensor and
wait until the indication goes back below the values corresponding to the various alarm thresh-
olds so as not to trigger false alarms.
- Press ENTER 2 times in succession within 2 seconds in order to exit from Access Code 1 with
model 9010 or to view Cha with model 9020.- Press ENTER 2 times in succession within
2 seconds in order to exit from Access Code 1 with model 9010 or to view Cha with
model 9020.
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