Emerson Rosemount OCX 8800 Reference Manual page 86

Calibration
7.
8.
9.
10.
11.
12.
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The Select Action screen is static, and data is not automatically refreshed.
• Calibration Step = Idle
• Step Time Remaining = 0 seconds
• O2 Value = 0.40%
Combustibles Value = 1000 ppm
•
a. Update Display
b. Next Calibration Step
c. Abort Calibration/Exit
The Calibration screen should look like the following. Press OK to continue.
The Calibration screen should automatically refresh; however, it may take a while for
the data to refresh.
Calibration Step = Apply O2 Low Gas
•
• Step Time Remaining = 0 seconds
• O2 Value = 0.40%
• Combustibles Value = 1000 ppm
Press Next to make a selection.
When the calibration status is at the Apply O2 Low Gas/Apply Comb Low
Gas step, switch on O low gas/COe low gas. Verify that the O
2
measured matches the O
reference air as the COe Low Gas. Press OK when ready.
Select Next Calibration Step and press OK to start applying the test gas.
The time to apply the test gas is specified by the Gas Time.
The calibration step changes to Flow O2 Low Gas/Flow Comb Low Gas and
then Read O2 Low Gas/Read Comb Low Gas for a period of time.
When ready, the calibration step stops at Apply O2 High Gas/Apply Comb
High Gas. Switch off the O
high gas/comb test gas. Verify that the O
the O2 High Gas/COe Test Gas parameter in the setup. Press OK when ready.
Select Next Calibration Step to start applying the test gas.
The time to apply the test gas is specified by the Gas Time.
The calibration step changes to Flow O2 High Gas/Flow Comb High Gas
and then Read O2 High Gas/Read Comb High Gas for a period of time.
Skip over to Step 15, Stop Gas, if executing Calibrate O2 Sensor or Calibrate
Combustibles Sensor.
Low Gas parameter in the setup. The unit samples
2
low gas/sample reference air and switch on the O
2
/COe concentration measured matches
2
concentration
2
2
OCX 8800