No, No , And No Coefficients; Reset User Calibration Defaults - Thermo Scientific 42i Instruction Manual

NO, NO , and NO
2
Coefficients
Reset User Calibration
Defaults
Thermo Fisher Scientific
The NO, NO , and NO
x
2
instrument processor during calibration. The span coefficients are used to
correct the NO, NO
coefficients normally has a value near 1.000. The NO
normally has a value between 0.95 and 1.050.
The NO, NO , and NO
2
NO span coefficients to be manually changed while sampling span gas of
x
known concentration. The NO, NO
the same way. Therefore, the following description of the NO coefficient
screen applies to the NO
The display shows the current NO concentration reading. The next line of
the display shows the NO span coefficient that is stored in memory and is
being used to correct the NO concentration. Notice that as the span
coefficient value is changed, the current NO concentration reading on the
above line also changes. However, no actual changes are made to the value
stored in memory until
indicated by a question mark prompt, are displayed until
In dual or auto range modes, "HIGH" or "LOW" is displayed to indicate
the calibration of the high or low coefficient. The example below shows the
coefficient screen in dual/auto range mode.
Note The screen will show "SPAN CONC NOT VALID" if the
coefficient change causes the concentration to be either higher than the
selected range or less than or equal to zero.
In the Main Menu, choose Calibration Factors > NO, NO2, or NOx
●
Coef.
NO COEFFICIENT:
SET COEF TO:
RANGE
The Reset User Calibration Defaults screen allows the user to reset the
calibration factors to factory defaults.
In the Main Menu, choose Calibration Factors > Reset User Cal
●
Defaults.
span coefficients are usually calculated by the
x
, and NO readings. The NO and NO
2 x
Coefficient screens allow the NO, NO
x
, and NO
2
, and NO coefficient screens as well.
2 x
is pressed. Only proposed changes, as
NO: 51.4
1.000

INC/DEC

SAVE VALUE
AVG DIAGS ALARM
Calibration Factors Menu
span
x
span coefficient
2
, and
2
Coefficient screens operate
x
is pressed.
▲
Model 42i Instruction Manual
Operation
3-19