SICK DUSTHUNTER T

GM35 Operating Instructions
Probe Model
Commissioning
48 © SICK MAIHAK GmbH • Germany · All rights reserved 8009389/07-2006
6.3.4 Aligning the measuring probe in the flow direction
The aperture must be aligned in the direction of the gas flow so that the gas can flow through
it unhindered. Since the SR unit should usually be operated in a vertical position, and since
the alignment of the device flange with regard to the SR unit is fixed, the probe alignment is
adjusted by rotating the flange. If the flow angle is known at the factory on the basis of the
project planning data, the probe is usually aligned on delivery. However, you can also align
the probe on site as described below.
Fig. 25 Measuring probe: flange and angular alignment of the aperture
Since the SR unit is to be mounted vertically, the alignment of the device flange forms the
reference for the perpendicular shown by the "top" and "bottom" points in Fig. 25. The angle
of rotation of the measuring probe with respect to the perpendicular of the device flange is
equal to the angle of the gas flow direction to the perpendicular and, therefore, to the
alignment of the flange with pipe on the duct.
To change the alignment of the measuring probe:
‡ Using a hexagon socket screw key, loosen the screws on the fixing ring that secures the
device flange to the measuring probe.
‡ Rotate the device flange in such a way that the aperture is aligned in the flow direction of
the measurement gas duct with respect to the perpendicular of the SR unit (see Fig. 25).
‡ Fix the device flange in this position by tightening the screws on the fixing ring again.
Aperture
The aperture is aligned with the flow
direction of the measurement gas.
Mounting flange
for mounting on the flange with pipe
(duct side), already mounted as part of
the on-site preparations (Chapter
5) in
flow direction of measurement gas.
Device flange
The alignment of the SR unit is deter-
mined by the three holes and spacer
bolts on the SR unit. The perpendicular
of the SR unit with respect to the device
flange is shown by the broken line in the
figure below.
Fixing ring for device flange
The device flange can be rotated step-
lessly with respect to the measuring
probe by loosening the fixing bolts.
top
bottom