Analog Input Calibrate Full-Scale - Thermo Scientific 48i Instruction Manual

Operation
Service Menu
Analog Input Calibrate
O Correction
2
Concentration
3-88 Model 48i Instruction Manual
ANALOG INPUT CAL:
DISCONNECT SELECTED INPUT!
The Analog Input Calibrate Full-Scale screen allows the user to calibrate
the full-scale state of the selected analog input.
Full-Scale
In the Main Menu, choose Service > Analog Input Cal > select Channel
●
> Calibrate Full Scale. (Hook up a voltage source of 10 V to the
analog input channel.)
ANALOG INPUT CAL:
PROVIDE VOLTAGE TO INPUT!
The O
2
correction concentration. Acceptable values range from 0 to 20.9%. When
O compensation is enabled, the following equation is applied to all of the
2
concentration values to generate corrected values (CO COR). The
corrected values may be output on the analog outputs, stored in logging
memory, or output as streaming data. The corrected values are not
displayed on the Run screen on the front panel, only the non-corrected
values:
Abbreviations: C is the measured concentration, O2
concentration that C is corrected to (this value is set by the user in the
SERVICE > O2 CORRECTION CONC menu and defaults to 15%).
O2 is the measured O
meas
prevent divide-by-zero errors. C
COR) that may be used for analog outputs or datalogging.
In the Main Menu, choose > Instrument Controls > O2 Correction
●
Conc.
SELECTED INPUT:
CURRENTLY:
CALIBRATE INPUT TO ZERO
RANGE AVG DIAGS ALARM
SELECTED INPUT:
CURRENTLY:
SET TO:
CALIBRATE TO VALUE
RANGE AVG DIAGS ALARM
Correction Concentration screen is used to set the oxygen
C @ O 2
comp corr
concentration, which is clamped at 20.8% to
2
ZERO
INPUT 1
0.04 V
SPAN
INPUT 1
9.84 V
10.00 V


20 9 .
O


C *


20 9 .
O
corr
is the corrected concentration (CO
comp

2

corr

2
meas
is the oxygen
Thermo Fisher Scientific