EM6100 Handheld Portable Ultrasonic Flowmeter Ver.8.08
Flomotion
Systems,
Inc.
EM6100
19
§2.8 Transducers Installation
The transducers used by the EM6100 series ultrasonic flow meter are made of piezoelectric crystals both
for transmitting and receiving ultrasonic signals through the wall of liquid piping system. The
measurement is realized by measuring the traveling time difference of the ultrasonic signals. Since the
difference is very small, the spacing and the alignment of the transducers are critical factors to the
accuracy of the measurement and the performance of the system. Meticulous care should be taken for
the installation of the transducers.
Steps for installation of the transducers
(1) Locate an optimum position where the straight pipe length is sufficient, and where pipes are in a
favorable condition, e.g., newer pipes with no rust and ease of operation.
(2) Clean any dust and rust. For a better result, polishing the pipe with a sander is strongly recommended.
(3) Apply adequate coupler to the spot where the transducers are to be installed and leave no gap
between the pipe surface and the transducers.
Extra care should be taken to avoid any sand or dust particles left between the pipe outer surface and the
transducers.
To avoid gas bubbles inside the upper part of the pipe, the transducers should be installed
horizontally by the side of the pipe.
§2.8.1 Transducers Spacing
The spacing value shown on menu window M25 refers to the distance of inner spacing between the two
transducers. The actual transducers spacing should be as close as possible to the spacing value.
