Servomex 07931001B, Operator'S Manual

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© Servomex Group Limited. 2020 07931001B revision 6
Pressure source selection
3 options are available for each segment
Option 1:
External
External should be selected when the required pressure source is a mA input
device.
Option 2:
User defined 0-4
User defined fixed pressures can be entered and saved, to be used with stable
process conditions.
Note: User defined pressures should only be used when the pressure of the measured
gas is constant and stable. Incorrect use will result in reported concentration
errors if the purge gas or process gas pressure changes.
Option 3:
Transmitter enclosure
The analyzer is fitted with a pressure transducer mounted on the main process PCB
inside the transmitter enclosure. The transducer will measure the pressure inside
the enclosure. An offset can be applied to correct for differences in measurement
gas pressure and the internal enclosure pressure.
Note : The internal transmitter pressure sensor is factory calibrated. The offset is
stored in the calibration certificate provided with the analyzer.
Note : If an environmental purge is fitted, the enclosure pressure may be higher than the
atmospheric pressure, and an addition to the calculated offset should be applied.
Note : 0.01BarG difference between sample pressure and analyzer set pressure is
equivalent to a 1% change in the analyzer reading (application dependent).
Temp source selection
4 options are available for each segment
Option 1:
External
External should be selected when the required temperature source is a mA input
device.
Option 2:
User defined 0-4
User defined fixed temperature can be entered and saved to be used with stable
process conditions.
Note : User defined temperatures should only be used when the temperature of the
purge gas is constant. Changes in measured gas temperature will result in
reported concentration errors.
Option 3:
Transmitter Enclosure