INTRODUCTION
The TFX-500w ultrasonic transit time flow meter measures volumetric flow of clean water in pipes 10 in or smaller By
clamping on the outside of the pipe, the ultrasonic meter installs without cutting or tapping the pipe
Transit time flow meters use two transducers that clamp on to the outside of a pipe and never directly contact the fluids
The transducers function as both ultrasonic transmitters and receivers The flow meters operate by alternately transmitting
and receiving a frequency-modulated burst of sound energy between the two transducers The burst is first transmitted in
the direction of fluid flow and then against fluid flow Sound energy in a moving liquid is carried faster when it travels in the
direction of fluid flow (downstream) than it does when it travels against fluid flow (upstream) The sound’s time is accurately
measured in both directions
Figure 1: Meter operation
DIMENSIONS
Enclosure, Integral and Remote, Front View
Integral Enclosure Side View
Remote Enclosure Side View
6.00 in.
(152.40 mm)
5.55 in.
(140.97 mm)
0.65 in.
(16.51 mm)
2.68 in.
(68.07)
0.31 in.
(7.87 mm)
2.68 in.
(68.07)
0.38 in.
(9.65 mm)
Figure 2: Dimensions
Introduction
Page 6
May 2021
TTM-UM-02537-EN-06