DANGER RISK TO HEALTH THROUGH HOT OR TOXIC GASES IN THE MEASURING DUCT
The measuring channel can contain hot or toxic gases which can escape when opening
the duct-side flange. Escaping gases can cause considerable health damage even if the
measuring channel is put out of operation for the duration of the installation.
b
Always put the measuring channel out of operation for the duration of the installa‐
tion.
b
If required, purge the measuring channel with ambient air before installation work.
b
During installation work, always wear suitable protective clothing resp. as specified
by the operating company.
Prerequisites
Minimum distance “a” must be available behind the welding neck flange to be able to
service and remove the gas sampling unit.
Table 5: Minimum distance behind welding neck flange
Length of gas sampling tube
Minimum distance “a”
0.5 m
915 mm
0.8 m
1215 mm
Procedure
1.
Observe minimum distance “a” behind welding neck flange.
2.
Attach the flange at an angle of approx. 10°.
5.5.18.2
Fitting the gas sampling unit on the flange
Overview
1
2 3
4
Figure 14: Fitting the gas sampling unit on the welding neck flange
1
Gas sampling tube
2
Welding neck flange
3
Filter housing flange
4
Filter housing
5
MOUNTING
44
O P E R A T I N G I N S T R U C T I O N S | MARSIC280
8021339/1CHC/V1-1/2021-07 | SICK
Subject to change without notice
