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Operation
Calibration Menu
Reset User Calibration
Calibration
3-20
Model 42i Trace Level Instruction Manual
The Reset User Calibration Default screen allows the user to reset the
calibration configuration values to factory defaults.
Default
In the Main Menu, choose Service > Calibration Factors > Reset User
●
Cal Defaults.
RESTORE DEFAULT CAL:
RANGE
AVG
DIAGS ALARM
The Calibration menu is used to calibrate the analyzer, including zero
backgrounds, the NO, NO
Menu
pressure. The screens below show the calibration menu in single mode and
dual/auto range modes. The zero/span check is visible only if the zero/span
option is installed in single range mode.
The calibration procedure is the same in dual, auto, or single range,
however, there are two sets of gas coefficients in dual or auto range (i.e. low
and high coefficients). This enables each range to be calibrated separately.
When calibrating the instrument in dual or auto range, be sure to use a low
span gas to calibrate the low range and a high span gas to calibrate the high
range.
Whether dual or singe range, the first step in calibrating the instrument is
to assign the calibration pressure. The calibration pressure is used to
account for slight pressure fluctuation brought on by changing weather.
The calibration pressure is set equal to the reactor pressure at the time of
CALIBRATION PRESSURE:
PRESSURE:
SET CAL PRES TO:
INC/DEC
SAVE VALUE
RANGE
AVG
DIAGS ALARM
RESTORE
, and NO
2
232.5
220.0
RESTORE DEFAULT CAL:
ARE YOU SURE YOU WANT
PRESS
TO CONFIRM RESTORE
RANGE
AVG
DIAGS ALARM
coefficients, and the calibration
x
RESTORE
TO?x
Thermo Fisher Scientific
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Troubleshooting
