FDT-25W Wall Mounter Ultrasonic Flowmeter
(11) Press MENU 9 0 to check up signal strength and quality, the bigger of the value the better.
Generally the signal strength should be better than 60.0, and signal quality should be better than 50.0.
(12) Press MENU 9 1 to check up time ratio, the ratio value should be in the range of 100±3%
(13) Press MENU 0 8 to check up the working status, “R” means work well
(14) Press MENU 0 1 to check up the measuring data.
Note: 1. For heat measurement, please connect PT100 which installed in water supply and water back
pipe to T1, TX1, T2, TX2, GND terminal.
2. After setting parameter, remember to store parameter in MENU 26, to avoid parameter lose
after turn off.
2.6 Transducers Mounting Allocation
The first step in the installation process is the selection of an optimum location in order to obtain a more
accurate measurement. For this to be completed effectively, a basic knowledge about the piping and its
plumbing system would be advisable.
An optimum location would be defined as a straight pipe length full of liquid that is to be measured. The
piping can be in vertical or horizontal position. The following table shows:
L up
L dn
L up
L dn
L up
L up
L up
L dn
L dn
L dn
Piping Configuration
and
Transducer Position
Upstream
Dimension
Downstream
Dimension
L dn
x Diam eters
L up
x Diameters
10D
5D
10D
10D
12D
20D
20D
5D
5D
5D
5D
5D
L up
L dn
30D
5D
L up
L dn
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