Calibration | 5-9
4. Press Enter when you have applied the calibration gas. The span display
appears (display line 2 will only appear if you have the combustibles op-
tion; display line 3 will only appear if you have the combined combustibles
and methane option):
O2 xx.x % Set xx.x %
Cmb y
CH4 z
Press ENTER to Span
5. Press Enter when the O
2
reading on the far left of the rst display line
stabilizes. The reading on the far right of the rst display line shows the
setpoint value you entered using the Cal Gas Values menu option. This
setpoint value should match the cal gas cylinder for the O
2
span gas.
If your O
2
reading on the far left of the display has stabilized, yet is not near the setpoint
value on the right of the display, you should check the cal gas value you entered and
ensure that this value matches the cal gas cylinder for the gas you applied to the cal gas
inlet port of the sensor.
You are then prompted to apply the O
2
zero gas to the calibration inlet
port of the sensor:
Inject Zero Gas
ENTER to Continue
CANCEL to Abort
6. Press Enter when you have applied this cal gas.
Separate instructions are given for Hot Wire-type and RTD-type
combustibles detector. Verify the type of detector used on the sensor
and proceed accordingly.
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