Ametek Thermox CEM O2/TM, User Manual

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Calibration | 5-17
Inject Cal Gas
This menu option requires that an auto cal card and RCU are in-
stalled.
This menu option allows you to manually adjust the pressure and flow
of your calibration gas (pressure of calibration gas cylinders and flow into
sensor) by cycling through the solenoid valves on the RCU. No calibration
or verification data is collected while in this menu option. See the “Me-
chanical Installation” section in the Installation chapter for recommended
calibration gas pressure and flow requirements.
It is important that all calibration gases, as well as the sample gas, flow
through the analyzer at the same flow rate.
1. Connect the span and zero gas cylinders to the RCU.
2. Select the Inject Cal Gas menu option from the Calibrate key menu.
The following message will then appear on your display, indicating that
the RCU has introduced the span gas to the sensor:
Span/Verify gas is flowing
You will be prompted to press the Enter key once you have manually set
the pressure and flow for the span gas:
ENTER for next Gas
CANCEL to quit
3. When you have adjusted the pressure and flow for the span gas to the
desired levels, press the Enter key.
NOTE
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