42/23-81 EN Rev. 4 System Manual SCK Gas Sampling System 29
The two gas sampling probes H and 60S differ above all in the following:
Gas sampling probe H Gas sampling probe 60S
Cleaning
procedure
Combined mechani-
cal/pneumatic cleaning
Multi-stage pneumatic clean-
ing
Location of the
filter element
Inner filter element Outer filter element
Sampling holes Front sampling hole Side sampling hole
Cleaning the gas sampling probe H comprises the following procedures:
Cleaning procedure Mode of functioning
Cleaning of the wall tube
Compressed-air blast from air cannon removes
material deposits between the probe and the wall
tube.
Cleaning of the outside of
the probe
Material deposits and incrustations on the probe
are removed by regularly moving the probe in and
out using the retractor.
Cleaning the probe intake
hole by means of plunger
movements
Incrustations on the intake hole are removed by
periodical pneumatically controlled movements of
the plunger.
Probe filter cleaning
Filter in probe pipe is cleaned periodically with
compressed air.
Cleaning
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