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Calibration
Manual Calibration
4-18
42iQD Instruction Manual
Thermo Scientific
by more than
±
10%, a new multipoint calibration curve should be
generated.
5.
When the calibration check has been completed, record the NO
x
value.
6.
Reconnect the analyzer sample line to the SAMPLE bulkhead.
The Manual Calibration screen allows the user to view and manually adjust
the zero background and span coefficient. These are used to correct the
NO
x
readings that the instrument generates using its own internal
calibration data.
Normally, the zero background and span coefficient are calculated
automatically at the Calibrate Background and Calibrate Span Coefficient
described earlier in the chapter. However, the calibration factors can also be
set manually using the functions as described below.
The following screen is shown in single range mode. In dual or auto range
modes, “High Range” or “Low Range” buttons are displayed to indicate the
calibration of the high or low coefficient. The Adjust High Range Span
Coefficient and Adjust Low Range Span Coefficient screens function the
same way.
Home Screen>Calibration>Advanced Calibration>Manual Calibration
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 button labeled Adjust NO
x
Background allows the user to change zero
background. The second button called Adjusted NO
x
Concentration shows
Manual
Calibration
Adjust NO and NO
x
Backgrounds
Содержание 42iQD
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Страница 182: ...Maintenance Pump Rebuilding 5 8 42iQD Instruction Manual Thermo Scientific Figure 5 3 Pump Rebuilding ...
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Страница 198: ...Servicing Fan Replacement 7 8 42iQD Instruction Manual Thermo Scientific Figure 7 8 Replacing the Fan ...
Страница 212: ...Servicing Power Supply Replacement 7 22 42iQD Instruction Manual Thermo Scientific Figure 7 26 Replacing Power Supply ...
Страница 235: ...Servicing DMC Ozonator Thermo Scientific 42iQD Instruction Manual 7 45 Figure 7 49 Flow Switch Remove ...
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