min.70
10°
~
~30
1
2 3
4
a
Figure 7: Installation requirements for welding neck flange
1
Gas sampling tube
2
Stack wall
3
Welding neck flange
4
Probe filter
b
Attach the flange with a tilt of approx. 10°.
b
The minimum distance a behind welding neck flange must be min. the length
specified in the following table in order to maintain and dismantle the gas sam‐
pling unit.
Table 1: Minimum distance behind welding neck flange
Length of gas sampling tube
Minimum distance a
0.5 m
915 mm
0.8 m
1215 mm
1.0 m
1415 mm
1.5 m
1915 mm
2.0 m
2415 mm
4
INSTALLATION AND START-UP
16
O P E R A T I N G I N S T R U C T I O N S | SFU
8023849/14SF/V1-1/2019-07 | SICK
Subject to change without notice
