18
Surveyor 4B
User Manual
Adjusting the ZERO
- Necessary when a cell is replaced
- At least twice a year
- Connect a voltmeter to the two terminal posts provided for that purpose (MF
and MES), as shown below:
Figure 9
- Be sure to be in pure atmosphere (without gas) (If not, inject air)
- Adjust the ZERO (0 mV) with the potentiometer, item 1.Figure 9.
Checking the sensitivity
- Necessary when a cell is replaced.
- At least twice a year.
- Prepare the calibration kit and secure the gas input pipe to the detector .
- Adjust the flow rate of the reference gas
6
to 60 l/h before injecting.
- Allow to stabilize for at least 10 seconds.
- Check that the alarm or alarms are triggered (as applicable
6
) and carry out
the following procedure.
6
La valeur du gaz étalon sera supérieure au moins au premier seuil d'alarme.
item 1
item 2
MV
Summary of Contents for Surveyor 4B
Page 1: ...User Manual Surveyor 4B R f rence NPS4BGB R vision E 0 The Fixed Gas Detection Experts...
Page 4: ...iv Surveyor 4B User Manual...
Page 10: ...6 Surveyor 4B User Manual...
Page 23: ...5 Operating instructions 19...
Page 26: ...22 Surveyor 4B User Manual...
Page 28: ...24 Surveyor 4B User Manual...
Page 30: ...26 Surveyor 4B User Manual...
Page 32: ...28 Surveyor 4B Manuel utilisateur...
Page 34: ...30 Surveyor 4B Manuel utilisateur...
Page 35: ......