Calibration | 5-9
Then the system will display the recovery time remaining:
Recovery xx:xx
System Calibrating
After the recovery period, the system returns to process readings.
Manual Calibrate
To perform a manual calibration, follow these steps:
1. Enter the calibration gas value to match the zero calibration gas you
intend to use to calibrate your system (Cal Gas Values).
2. Select Initiate Cal from the Calibrate key menu.
3. Select Manual Calibrate.
You are then prompted to apply the O
2
span gas to the calibration gas
inlet port of the sensor (tubing must be free of oil and dirt):
Inject Span Gas\Vrfy Gas
ENTER to Continue
CANCEL to Abort
4. Press the Enter key once you have applied this calibration gas.
The span gas display then appears:
O2 xx.x Set xx.x
Press ENTER to Span
5. Press the Enter key once the O
2
gas reading on the far left of the dis-
play has stabilized. The reading on the far right of the first display line
shows the set point value you entered using the Cal Gas Values menu
option. This O
2
zero gas set point value should match the cal gas cyl-
inder for the O
2
span gas.
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