Ametek Thermox Series 2000 WDG-IV User Manual page 83

Setting up a primary calibration
Make sure you have properly entered calibration gas values using the Cal
Gas Values option from the Calibrate key before starting your primary
calibration.
1. From the Setup key, select Primary Calib.
2. If you have the auto calibration card option (and a remote calibra-
tion unit), you will be prompted to select Auto Calibrate, Remote
Calibrate, or Manual Calibrate. If you don't have the auto calibration
option, the system defaults to a manual calibration, and you will be
prompted to inject span gas into the calibration gas inlet port.
From this point, operations continue as they do for a regular calibration.
Please see the "Initiate Cal/Initiate Verify" section in Chapter 5 for help
on how to perform the calibration.
If you have the combustibles option, during a primary calibration the

system will not use the combustible span gas to calibrate the system.
NOTE
When the primary calibration is finished, the system will notify you

that a standard calibration is required by displaying a Calibration
Required message.
Oxygen readings on the display will not be accurate until the regular

calibration is performed.
A 15-minute recovery time follows the primary calibration to allow

the cell to stabilize. Perform the regular calibration after this 15 minute
stabilization period,
During the recovery time immediately following the primary calibra-

tion, you may see some temperature related error messages. You can
ignore these messages and assume no problem exists. This is because
NOTE
the cell temperature is adjusted after a primary calibration.
Controller / User Interface | 4-11