CiDRA SONARtrac HD GVF-100 - Manual (Page 24)

Copyright © 2006 CiDRA Corporation Page 7-6
20675-02 Rev 01
Position the SONARtrac
TM
sensor band assembly on the pipe with the
polyimide film (amber colored) against the the compliant layer.
Important:
The attachment rails on an HD sensor band must be
installed on the top of a horizontal flowing pipe. Slide the alignment
pins on the attachment rail through their mating holes on the opposite
attachment rail.
If possible, orient the flow direction arrow on the sensor assembly with
the direction of flow within the pipe. Note: If this is not possible due to
installation constraints, e.g. access to sensor fasteners, install
opposite to flow direction. The transmitter must be re-configured to
“reverse flow” during its set up as detailed in the Transmitter Startup &
Operation Section of the manual.
Figure 7 Sensor Band Screw and Alignment Pins
Carefully start threading the screws into their screw holes (avoid cross
threading) by using the hex driver until each screw is engaged about 2
turns. The following table provides guidance for selecting the proper
hex tool and spacer gauge.
Table 4 Gauge Block and Screw Size Table
Sensor Band P/N
Spacer Gauge
P/N
Socket Head Screw
Hex Size (inch)
Band Attachment Rail
Size (Ref)
20380- ALL SIZES 20143-01 7/64 1/8 x 3/8
20409- ALL SIZES 20143-02 7/64 1/8 x 3/8
20690- ALL SIZES 20143-04 5/32 1/4 x 1/2
20686- ALL SIZES 20143-04 5/32 1/4 x 1/2
Compliant sheet
Sensor attachment screw
assembly (typical 9 places)
Alignment pins
(typical 2 places)
Flow direction arrow
Attachment rails
Sensor band shorting plug