Thermo Scientific 42iQLS, Instruction Manual

Page: 124 / 318

Operation
Settings
3-98 42iQLS Instruction Manual Thermo Scientific
When O
2
correction is enabled, the following equation is applied to the
NO, NO
2
, and NO
x
concentration values to generate a corrected value.
The corrected value may be output on the analog outputs, stored in logging
memory, or output as streaming data. The corrected values are not
displayed on the Home Screen on the front panel, only the non-corrected
values.









2
9 . 20
2
9 . 20
* 2 @
O
O
C O C
meas
corr
corr comp
Abbreviations: C is the measured concentration, O2
corr
is the oxygen
concentration that C is corrected to (this value is set by the user in the
Source O
2
Concentration Setpoint screen and defaults to 15%). O2
meas
is
the measured O
2
concentration, which is clamped at 20.8% to prevent
divide-by-zero errors. C
comp
is the corrected concentration that may be used
for analog outputs or datalogging.
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings>Compensation>O
2
Correction (single range mode)
O
2
Correction