Doppler Flow Switch0 pages

Control Flow From Outside a Pipe
Flow Switch with Non-Contacting Sensor

Doppler Flow
Switch
Model DFS 5.1
Controls Flow with:
No pressure drop
No sensor fouling
No maintenance

Clamp-on Flow Sensor
Installs without cutting the pipe
Installs in Minutes
No moving parts

Ideal for "difficult" liquids
No contact, No maintenance

Easy Calibration

Mount the DFS 5.1 ultrasonic sensor on the outside of metal or
plastic pipes. The sensor continuously injects high frequency
sound through the pipe wall and into the moving fluid where
acoustic pulses are reflected back to the sensor from particles or
bubbles in the fluid.
Flow rates of most liquids can be accurately controlled including
acids, caustics, lubrication fluids, chemicals, abrasives, waste
water and sludge. There are no moving parts and no sensor
maintenance is required.
The compact, water tight electronics enclosure includes adjustable
controls with separate ON and OFF relay set-points and time delay.
A LED bargraph for flow rate and set points plus relay status are
included.
Installation can be made while the flow system is in full operation.
No contact is made with the moving fluid and no holes are drilled in
the pipe. There is no fouling or scale build-up on the sensor.