-EN Rev. E Operating instruction SCK Gas Sampling System 27
Probe H is used when stubborn incrustations can be expected to build up on
the probe due to the properties of the process and sampling conditions.
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
cleaning
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 move-
ments of the plunger.
Probe filter cleaning Filter in probe pipe is cleaned periodically with
compressed air.
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