Co Background - Thermo Scientific 410i Instruction Manual

CO Background
2
Thermo Fisher Scientific
CALIBRATION FACTORS:
>BKG
COEF
O2 BKG
O2 COEF
RESET USER CAL DEFAULTS
RANGE AVG DIAGS ALARM
The CO
CO background is the amount of signal read by the analyzer while
2
sampling zero air. Before the analyzer sets the CO
this value as the CO
The CO
of the instrument. As such, the instrument should sample zero air until
stable readings are obtained. The first line of the display shows the current
CO reading. This reading is the CO
2
of the display shows the CO
memory and is being used to correct the CO
background correction is subtracted from the CO
In the following example, the analyzer is reading 15.8 ppm of CO
sampling zero air. The CO
analyzer is not applying a zero background correction. The question mark
is used as a prompt to change the background correction. In this case the
background correction must be increased to 15.8 ppm in order for the CO
reading to be at 0 ppm.
To set the CO
increment the CO
background correction is increased, the CO
this point, however, no real changes have been made. To escape this screen
without making any changes, press
Factors menu or
set the CO
ppm.
In the Main Menu, choose Calibration Factors > Bkg.
●
0.0
1.000
0.0
1.000
background correction is determined during zero calibration. The
2
background correction.
2
Background screen is used to perform a manual zero calibration
2
background correction that is stored in
2
background correction is 0.0 ppm. That is, the
2
reading in the following example to zero, use
2
background correction to 15.8 ppm. As the CO
2
to return to the Run screen. Press
reading to 0 ppm and store the background correction of 15.8
2
CALIBRATION FACTORS:
>BKG
LO COEF
HI COEF
O2 BKG
O2 COEF
RANGE AVG DIAGS ALARM
RESET USER CAL DEFAULTS
reading to zero, it stores
2
background signal. The second line
2
reading. That is, the CO
2
reading.
2
concentration is decreased. At
2
to return to the Calibration
Model 410i Instruction Manual
Operation
Calibration Factors Menu
0.0
1.000
1.000
0.0
1.000
2
while
2
2
to
2
to actually
3-17