Sensor Coupling - GF UD2100 Betriebsanleitung

Operating Instructions
6.3

Sensor Coupling

For permanent or temporary bonding, the following are recommended:
a) Super Lube ® (supplied). Additional supply available as spart from GF.
b) Water-based sonic compound
c) Electrocardiograph gel
d) Petroleum gel (Vaseline)
The above are arranged in their order of preferred application.
c & d are only good for temporary bonding at room temperature.
DO NOT USE: Silicon RTV caulking compound (silicon rubber).
1. Applying lube
Apply Super Lube ® to the coloured face of
the sensor. A bead, similar to toothpaste on a toothbrush, is
ideal. Do not overtighten (crush the sensor).
2. Fixing
Use the PC4 pipe clamp (supplied) as illustrated on the
previous page. The sensor must be fixed securely to the pipe
with coupling material between the sensor face and the pipe.
Sensor installation with excessive coupling compound can
result in gaps or voids in the coupling and cause errors or loss
of signal. Insufficient coupling compound will create similar
conditions.
Over time temporary coupling compounds (e.g. Petroleum Gel) may gradually sag away from the sensor resulting in reduced signal
strength and finally complete loss of signal. Warm temperatures, moisture and vibration will accelerate this process. Super Lube ®
as supplied with the GF UD2100 (and available as spare part from GF) is recommended for semi-permanent installations.
UD2100 Ultrasonic Doppler Flow Meter
COMPOUND
TAPE OR
CLAMP
PIPE
27