ABB GAA330-M Operating Instructions Manual page 68

68
Adjustment with calibration cell and ambient air
Adjustment with test gases
GAA330-M EMISSION MONITORING SYSTEM
The dew point of the inlet air should be similar to the measured gas, for not
changing the conditions in the cooler.
1 Start calibration process.
2 The solenoid valve switches to ambient air.
3 A defined purging time of 90 seconds starts to guarantee that all re-
mains of measuring gas are replaced.
4 The zero point is set.
5 The calibration cell is driven into the gas path.
6 The end point is set.
7 The calibration cell is driven out of the gas path.
8 The solenoid valve is switched back to measuring gas.
9 A defined purging time of 90 seconds starts to guarantee that all re-
mains of zero gas are replaced.
10 The measuring operation is restarted.
Test gases are dry gases, without any amount of water content. The result-
ing zero-point shift switches the complete sensitivity line parallel and ad-
justs the calibration to the operating conditions.
1 Start calibration process.
2 The zero gas is supplied through the gas cooler.
3 A defined purging time of 90 seconds starts to guarantee that all re-
mains of measuring gas are replaced.
4 The zero point is set.
5 The end-point gas is supplied.
6 A defined purging time of 90 seconds starts to guarantee that all re-
mains of zero gas are replaced.
7 The end point is set.
8 The solenoid valve is switched back to measuring gas.
9 A defined purging time of 90 seconds starts to guarantee that all re-
mains of end-point gas are replaced.
10 The measuring operation is restarted.
| OI/GAA330-M-EN REV. C