AO2000 CONTINUOUS GAS ANALYZERS  |  OI/AO2000-EN REV. B  265
 
 
 
Calibrating the gas analyzer 
 
 
Gas analyzer manual calibration 
NOTES  
Calibration should only be started after the warm-up phase.   
A manual zero calibration must always be carried out before a manual span 
calibration. 
Gas analyzer manual calibration 
1  Select the Manual Calibration menu: 
MENU 
→ Calibrate → Manual Calibration 
2  For single calibration: Select Component and Measurement Range. 
Zero calibration: 
3  Select Zero Gas. 
4  Turn on the zero gas supply. 
5  If necessary, change the test gas concentration
1
 shown, ENTER. 
6  When the sample value indication stabilizes, initiate zero calibration 
with ENTER. 
7  Accept the calibration result with ENTER 
or REPEAT
2
 calibration (back to step 5) 
or reject calibration with Back (back to step 6) 
or reject calibration with Meas (back to measurement value readout). 
Span calibration: 
8  Select Span Gas. 
9  Turn on the span gas supply. 
10  If necessary, change the test gas concentration
3
 shown, ENTER. 
11  When the sample value indication stabilizes, initiate span calibration 
with ENTER. 
12  Accept the calibration result with ENTER 
or REPEAT
4
 calibration (back to step 10) 
or reject calibration with Back (back to step 11) 
or reject calibration with Meas (back to measurement value readout). 
13  For single calibration, repeat steps 2 to 12 for other components and 
measurement ranges. 
 
 
  
1
  The parameterized test gas concentration is displayed. If the set point is altered 
here, the parameterized test gas concentration is overwritten. 
2
  A calibration may have to be repeated if the measured value is not stable after initi-
ation of the calibration. The repeated calibration is based on the measured value 
obtained in the preceding calibration. 
3
  The parameterized test gas concentration is displayed. If the set point is altered 
here, the parameterized test gas concentration is overwritten. 
4
  A calibration may have to be repeated if the measured value is not stable after initi-
ation of the calibration. The repeated calibration is based on the measured value 
obtained in the preceding calibration.