Adjustment
GMS800 · Operating Instructions · 8013025 V1.2 · © SICK MAIHAK GmbH 45
Subject to change without notice
6.3.3 Physical conditions for test gases
Principle
Test gases should be fed into the gas analyzer under the same conditions as the sample
gas.
b
When devices are available for sample gas conditioning (e.g. filter): Let the test gases
flow through the sample gas conditioning before reaching the gas analyzer.
b
If a sample gas cooler is used: Observe §6.3.4 (
→
p. 46).
Volume flow
b
Set the volume flow (flow) of the test gases so that it more or less corresponds to the
sample gas volume flow.
Feed pressure
b
Without a sample gas pump: Feed the test gases with the same primary pressure as
the sample gas.
b
With a sample gas pump (option in Gas module): Feed the test gases with low
overpressure (+50 … +100 mbar). Set the overpressure so that the volume flow is as
large as the sample gas volume flow during operation.
NOTICE:
On devices with a sample gas pump:
b
Make sure the feed pressure of the test gases is limited (check pressure
regulator).
Otherwise the fitted sample gas pump can be damaged.
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