Ametek Thermox 2000 ATEX Series User Manual page 109

Then the following message will appear on your display:
Zero Gas xx:xx
System Calibrating
During this time, the RCU has switched the solenoid valves and has
introduced the zero gas to the sensor.
If you have the combustibles option, the following message appears on
your display:
Comb Span Gas xx:xx
System Calibrating
During this time, the RCU has switched the solenoid valves and has
introduced the combustibles span gas to the sensor.
Then, if you specified a recovery time, the system will display the recov-
ery time remaining:
Recovery xx:xx
The system then returns to monitoring process readings and the calibra-
tion or verify operation is complete. You can view the results of the last
calibration or verification using the Cal/Verify Data menu option from
the Calibrate key menu.
Calibration | 5-9