Thermo Scientific INNOVA Series Instruction Manual page 81

8. Press → to accept "AUTO CAL". The screen displays "BEGIN
AUTOCAL" alternating with "APPLY GAS" counting down from
30 seconds. If no gas is detected during this period, the screen returns
to "BEGIN CAL".
9. First, the display will read "CAL IN PROCESS". Then the screen
displays "CAL TIME LEFT" (counting down from 75 seconds)
alternating with the gas readings.
NOTE
During calibration, datalogging is disabled but calibration events are
recorded in the log.
10.When calibration is complete, the display reads "AUTOCAL
PASSED" and then alternates between ">ACCEPT, ABORT" and
the gas readings. The gas labels alternate with 'PASS". Press → to
accept. The display will show "CAL ACCEPTED", and then
alternate between "REMOVE GAS" and the gas readings.
If you choose to abort, press ↓ to scroll to "ABORT" then → to accept
the abort option.
The display will read "CAL ABORTED" and then alternate between
"REMOVE GAS" and the gas readings.
NOTE
A "WEAK" or "FAIL" flag may appear in place of the "PASS" flag
in the case of a weak or failed sensor. See the instructions in the
Calibration Alarms section, later in this chapter for corrective action.
11.Remove the tubing from the probe. After fresh air has been detected,
the display will alternate between "ALARMS SILENCED", and the
readings, and then return to the normal operating mode, after an
"ALARMS ACTIVE" message is displayed.
12.Unscrew the regulator from the cylinder, leave the components of the
calibration kit assembled for convenience and place in the storage
case.
NOTE
After the calibration, refer to the "Conversion Factors" section for
information on measuring methane (CH4 operating mode) after the
instrument has been calibrated with hexane.
71-6417
Appendix C
73