Revision: 3.0.3
4
Transducer Installation
4.1
Installing the transducers
Before installing the transducers, clean the pi
scale or loose paint and make a smooth surface.
transducers. Apply a wide band of sonic coup
well as on the pipe surface, ensure there are n
attach the transducers to the pipe with the strap
Note:
The two transducers should be mounted at the p
Make sure that the transducer mounting direc
During the installation, there should be no air
horizontal pipes, the transducers should be m
order to avoid any air bubbles inside the top po
transducers cannot be mounted horizontally s
may be necessary to mount the transducers at
always full of liquid).
4.1.1
Transducer Spacing
After entering the required parameters, the spac
standard transducer spacing (Refer to Top Vi
Window M25 and space the transducers acco
4.1.2
Transducer Mounting Meth
Three transducer mounting methods are avail
V method is primarily used on small diamete
applications where the V method cannot wor
generally works better on larger diameter pipe
The N method is an uncommonly used method.
4.1.3
V Method
The V method is considered as the standard m
diameters ranging from 25mm to 400mm (1
＂
requires proper installation of the transducer
either side of the centerline.
Downstream Transducer
Upstream Transducer
Flow
Side View
D116 Series Ultrason
he pipe surface where the transducers are to be mounted. R
rface. Choose a section of sound conducting pipe for ins
oupling compound down the center of the face of each tr
e no air bubbles between the transducers and the pipe w
straps provided and tighten them securely.
the pipe
’
s centerline on horizontal pipes.
irection is parallel with the flow.
no air bubbles or particles between the transducer and the
mounted in the 3 o
’
clock and 9 o
’
clock positions of the p
op portion of the pipe. (Refer to Transducer Mounting). I
lly symmetrically due to limitation of the local installation cond
rs at a location where there is a guaranteed full pipe cond
he spacing between the ENDS of the two transducers is con
View on transducer mounting methods). Check the data
accordingly.
thods
ailable. They are respectively: V method, Z method and
eter pipes (DN100~300mm, 4
〞
~12
〞
). The Z method i
ork due to poor signal or no signal detected. In addition,
pipes (over DN300mm, 12
〞
) or cast iron pipes.
thod. It is used on smaller diameter pipes (below DN50mm
d method. It usually gives a more accurate reading and i
＂
~16
〞
) approximately. Also, it is convenient to use, but
ducers, contact on the pipe at the pipe
’
s centerline and equa
er
Transducer
Flow
Top View
Section
Pipe Strap
Transducer
sonic Flowmeter
Page 15 of 53
ed. Remove any rust,
installing the
each transducer as
pe wall, and then
pipe wall. On
the pipe section in
). If the
tion conditions, it
pe condition (the pipe is
considered as the
he data displayed in
and N method. The
hod is used in
on, the Z method
50mm, 2
〞
).
d is used on pipe
se, but still
qual spacing on
cer Space
