ThermoFisher Scientific Ozone Primary Standard 49iQPS, Instruction Manual

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Operation
Calibration
Thermo Scientific 49iQPS Instruction Manual 3-9
The Adjust Background screen is used to make small adjustments to the
zero level. This adjustment should only be made when the 49iQPS is being
precisely matched to a NIST traceable O
3
calibrator. Normally, the
instrument does not require any background compensation.
The user can manually adjust the zero background by entering a value in
the Adjust Background button. The second button called Adjusted
Concentration shows what the new O
3
concentration would be based on
the changed zero background. Press the Calibrate button to save the
adjusted zero background value.
Home Screen>Calibration>Adjust Background
The Adjust Background screen contains the following information:
●
Adjust Background: Allows the user to manually adjust the zero
background.
●
Adjusted Concentration: Read only. Displays what the O
3
concentration
will become when the calibrate button is pressed.
●
Calibrate: When pressed, updates the background value, making the
concentration go to zero.
Adjust Background