Mod.BM43
COM
Vers.1.0
16/11/2005
Page 27 of
95
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S t r e n t h + Q u a lit y
[ 9 0
U P : 5 4 . 4 D N : 5 6 .5
Q = 4 5
2.5.1 “V” mounting method
The “V” method uses a bounce into the pipe and the ultrasonic wave goes through
more distance. The measuring principle is based on the difference of time and through
a “V” distance, the time needed is bigger and the precision higher. In case of horizontal
mounting, it is suggested to avoid mounting the sensors on the top or on the bottom of
the pipe. Air bubbles on the top could stop the ultrasonic wave and the dump on the
bottom decrease and change the ultrasonic entrance angle. Refer to the picture below.
In case of vertical mounting, avoid installing
the transducers on downward pipe walls,
even if they are under pressure. The pipes
with an external liner such as tar,
polyethylene, epoxy, should be cleaned
when in contact with the transducers.
A tube for acoustic coupling gel for sensors
installation, is included in the supply. Use a
small quantity of coupling grease in order to
improve acoustic the contact between the
sensor and the pipe’s external surface.
