Calibration
Manual Calibration
4-22
42iQLS Instruction Manual
Thermo Scientific
Home Screen>Calibration>Advanced Calibration>Manual Calibration
The NO background is the amount of signal read by the analyzer in the
NO channel while sampling zero air. The NO
x
background is the amount
of signal read by the analyzer in the NO
x
channel while sampling zero air.
The Adjust Background screens are used to perform a manual zero
background calibration of the instrument. As such, the instrument should
sample zero air until stable readings are obtained. The NO channel should
be calibrated first. Both the NO and NO
x
Adjust Background screens
operate the same way.
The button labeled Adjust NO Background allows the user to change zero
background. The second button called Adjusted NO Concentration shows
what the new NO concentration would be based on the changed zero
background. Press the Calibrate button to save the adjusted zero
background value.
Home Screen>Calibration>Advanced Calibration>Manual
Calibration>Adjust Backgrounds>Adjust NO Background
Adjust NO and NO
x
Backgrounds
Summary of Contents for 42iQLS
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