O2 Background; O Coefficient - Thermo Scientific 410i Instruction Manual

O Coefficient
2
Thermo Fisher Scientific
background correction is a value, expressed in %, that is subtracted from
the O reading to produce the O
2
In the example below, the analyzer displays 0.12% of O
nitrogen. A background correction of 0.00% means that 0% is being
subtracted from the O
2
background correction must be increased to 0.12% in order for the O
reading to be at 0%, i.e., an O
reading of 0.12% gives the corrected O
To set the O reading in the example below to zero, use
2
increment the O background correction to 0.12%. As the O
2
correction is increased, the O
point, pressing and
outputs or the stored O
following both the O
2
that these are proposed changes as opposed to implemented changes. To
escape this screen without saving any changes, press
Calibration Factors menu or
to actually set the O
background correction of 0.12%. Then the question mark prompt beside
the O reading disappears.
2
In the Main Menu, choose Calibration Factors > O
●

O2 BACKGROUND:

O2:
SET BKG TO:
RANGE AVG
The O Coefficient screen allows the O
2
manually while sampling span gas of known concentration.
The display shows the current O
the display shows the O
being used to correct the O
coefficient value is changed, the current O
above line also changes. However, no real changes are made to the value
stored in memory until
indicated by a question mark prompt, are displayed until
Note The concentration value will show "ERROR" if the measured
concentration is not a valid span value (either too high or too low).
reading that is displayed.
2
concentration being displayed. Therefore, the
reading of 0.12% minus an O
2
reading of 0%.
2
concentration is decreased. Note that at this
2
however, has no affect on the analog
background correction of 0.00%. A question mark
2
reading and the O background correction indicates
2
to return to the Run screen. Press
reading to 0.00% and store the new
2
0.12 %
0.00 % ?
 INC/DEC
 SAVE VALUE
DIAGS ALARM
span coefficients to be changed
2
concentration reading. The next line of
2
span coefficient that is stored in memory and is
2
concentration. Notice that as the span
2
concentration reading on the
2
is pressed. Only proposed changes, as
Operation
Calibration Factors Menu
while sampling
2
2
background
2
to
background
2
to return to the
Background.
2
is pressed.
▲
Model 410i Instruction Manual 3-19