5-6 | Thermox Series 2000 WDG-IV / IVC / IVCM
You can start the auto calibrate cycle as follows:
1. Depending on whether you want to perform a calibration or verifica-
tion, select either the Initiate Cal or Initiate Verify option from the
Calibrate key menu.
2. Select the Auto Calibrate or Auto Verify option. The system will begin
the automatic calibration, and will notify you how long the span gas
will be applied to the sensor from the RCU:
Span Gas xx:xx
System Calibrating
Then the following message will appear on your display:
Zero Gas xx:xx
System Calibrating
During this time, the RCU switched the solenoid valves and introduced
the zero gas to the sensor.
Combustibles and Methane Options
If you have the combustibles option, the following message appears:
Comb Span Gas xx:xx
System Calibrating
During this time, the RCU switched the solenoid valves and introduced
the combustibles span gas to the sensor.
If you set the duration time for the combustibles span gas to 0 from
the Set Cal Timers menu, you will not see this message.
If you have the methane options, the following message appears:
Methane Span Gas xx:xx
System Calibrating
When specified, the system will display the recovery time remaining:
Recovery xx:xx
The system returns to monitoring process readings and the calibration
or verify operation is complete. You can view the results of the last cali-
bration or verification using the Cal/Verify Data menu option from the
Calibrate key menu.
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