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Operation
Calibration Factors Menu
Calibration Factors
3-16
Model 42i Trace Level Instruction Manual
the dual and auto range modes have two averaging times (high and low).
The Averaging Time screen functions the same way in the single, dual, and
auto range modes. The following averaging times are available: 10, 20, 30,
60, 90, 120, 180, 240, and 300 seconds. Additional averaging times are
available in NO and NO
chapter.
In the Main Menu, choose Averaging Time.
●
AVERAGING TIME:
Calibration factors are used to correct the NO, NO
concentrations readings that the instrument generates using its own
Menu
internal calibration data. The Calibration Factors menu displays the
calibration factors. The screens below show the calibration factors menu in
single mode and dual/auto range modes. The only difference between the
screens are the words "HI" and "LO" to indicate which range is displayed.
Normally, the instrument is calibrated automatically using the Calibration
menu described in
instrument can also be calibrated manually using the Calibration Factors
menu.
To manually calibrate the instrument, see
Backgrounds",
Pressure" below for more information.
In the Main Menu, choose Calibration Factors.
●
mode, see
x
CURRENTLY:
SET TO:
CHANGE VALUE
SAVE VALUE
RANGE
AVG
DIAGS ALARM
"Calibration
"NO, NO2, and NOx
"Auto/Manual
Mode" later in this
30 SEC
10 SEC ?
, and NO
2
Menu" later in this chapter. However, the
"NO, NOx, and Prereactor
Coefficients" and "Calibration
x
Thermo Fisher Scientific
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Troubleshooting
