Pressure Correction - ABB EL6010 Operator's Manual

Pressure Correction

Air Pressure Effect
Pressure Sensor
Installed
Pressure Sensor
Calibration
Notes for
EL6010-Magnos106
Calibrate
Pressure Sensor
42/24-30 EN Rev. 1
A change in atmospheric pressure by a certain amount will affect measured value
readings.
A pressure sensor is installed in the gas analyzer unit (in EL6010-Magnos106 as an
option). The effects of air pressure changes on the measured value are minimized
by automatic internal pressure correction.
If the indication of the internal pressure sensor differs from the current air pressure,
the pressure sensor can be recalibrated.
When measuring non-flammable sample gases, the pressure sensor can be con-
nected to the sample gas outlet line via an external tee. In this case, the sample
gas flow should be stopped when calibrating the pressure sensor in order to
prevent the sample gas pressure from causing a false pressure reading.
After calibrating the pressure sensor the zero and span points must be checked
and recalibrated as needed.
The EL6010-Magnos106 analyzer unit with no pressure sensor installed is cali-
brated at the factory for an air pressure of 1013 hPa. If the air pressure at the instal-
lation site differs from 1013 hPa, the actual pressure can be corrected by manually
entering a value (see instructions "Calibrate Pressure Sensor", steps 1 to 3).
Step Action
1 Select the Calibrate
menu.
2 Select Pressure
adjustment.
3 Set the pressure set
point.
4 Start adjustment if the
measured value reading
is stable.
5 Adjustment in progress.
6 Accept the measured
value.
7 Press the Back key to
return to displaying
measured values.
EL6010 Gas Analyzer in Category 2G Operator's Manual
Key Display
Calibrate
Enter
Pressure adjustment
Pressure setpoint
1021 hPa
Meas. value stable?
997 hPa
Wait cal. is running
Meas. value ok?
1021 hPa
Key
Enter
Enter
Enter
Enter
Enter
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