SERVOPRO FID Online Total Hydrocarbons Analyser
SERVOPRO FID 01000001A rev:5 47
6 GENERAL OPERATION
Sample and calibration gas must be as specified in Sections 2.2 and 2.3. If
your sample or calibration gas pressures and/or flow rates are above those
specified in Section 2.2 and 2.3, you must regulate them externally before
they enter the SERVOPRO FID.
6.1 Calibrating the SERVOPRO FID
You must calibrate the SERVOPRO FID before initial set-up. We also
recommend calibrating the SERVOPRO FID at least every month or more
often depending on the required accuracy. Periodic calibrations are
important in order to verify the functionality of the analyser.
The pressure of your calibration gas supply must be the same as the
pressure of the gases to be sampled. If the pressures are different,
sample gas measurements may not be accurate.
If you do not allow calibration gas to pass through the SERVOPRO
FID
for a proper period of time before calibrating, the calibration
may not be accurate. Typically,
15 minutes is considered enough,
however, it depends on the installation. The SERVOPRO FID is well
purged when the reading is stable.
Before calibrating the SERVOPRO FID, make sure that flows and
FID temperature are stable (typical warm-up time is 1 hour).
1. Connect your calibration gas to the sample gas inlet. Ensure that the
calibration gas pressure is as specified in Section 2.3.
2. Allow the calibration gas to pass through the SERVOPRO-FID and wait
for stabilization.
If the gas measured during normal operation has a high content of
hydrocarbons, it may be necessary to wait longer period of time for
stabilization of zero gas.
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