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GAA610-M ADVANCED EMISSION GAS MONITORING SYSTEM | OI/GAA610-M-EN REV. B
Basic calibration
What does the basic calibration do?
A basic calibration of an analyzer module sets the module back in
an initial state. The offset drift and amplification drift are set to
zero. The drift history is lost. This should only be done by staff
who are aware of this function.
When should a basic calibration be performed?
Basic calibration of an analyzer module should be performed
only in exceptional cases when changes that affect calibration
have been made. This may be the case e.g. after exchanging
subassemblies. For the Uras26 analyzer module, a basic
calibration can be performed at the zero point for calibration to
the cooler dew point during commissioning at the sampling
point.
Check prior to a basic calibration
Prior to a basic calibration, check and ensure:
•
That the gas analyzer is in proper operating condition
•
That the sample conditioning units are in proper
operating condition
•
That the correct test gases are being used.
•
Before performing the basic calibration, the pressure
sensor should be calibrated.
Test gases
The zero and/or span calibration test gases are required for a
basic calibration.
Starting and performing the basic calibration
The basic calibration is performed for each sample component.
It is recommended to perform the basic calibration in zero and
endpoint.
If a new basic calibration is performed, it is recommended to
perform a pressure sensor calibration and a calibration reset
first.
Pressure Sensor Calibration
The pressure sensor calibration can be performed at 'MENU /
Maintenance/Test / Analyzer spec. adjustm. / Atm. press. anlz'.
1. Confirm the module 'URAS26' and close the next message
with 'BACK'.
2. Then enter the current atmospheric pressure and the
password. (Password: 081500)
3. After this, the sensor will be recalibrated. After the adjust all
gas components have to be gas calibrated.
Calibration Reset
The calibration reset can be performed at 'MENU /
Maintenance/Test / Analyzer spec. adjustm. / Calibration Reset'.
This deletes the current data of the basic calibration.
Select the component and perform the reset. After that the basic
calibration can be performed.
Basic calibration
The basic calibration can be started in the menu 'MENU /
Maintenance/Test / Analyzer spec. adjustm. / Basic Calibration'
(Password: 081500).
1. After entering the password, select the component and
the 'Zero/span basic cal.'
2. Confirm your test gas concentration and wait until the
reading is stable as shown in Figure 39. The procedure for
the end point is the same.
3. After the basic calibration, you have to continue with
'Measurement of calibration cells'.
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