DFS 5.1 Doppler Flow Switch

DFS 5.1 Brochure
DFS 5.1 User's Guide
DFS 5.1 Engineering Specifications
How Doppler Works
Dow Corning Coupling Compound MSDS
More Information
DFS 5.1 Order Form
Greyline Product List
What's New from Greyline
How To Order

New! DFS 5.1 Doppler Flow Switch

  • Flow Control from the Outside of Metal or Plastic Pipes

  • 5 amp DPDT Control Relay

  • Adjustable ON/OFF Set-Points

  • Hi or Lo Flow Alarm Mode

  • Adjustable Time Delay

  • Relay Status LED

  • Flow Rate LED bargraph

Flow Switch With Non-Contacting Sensor

Control Flow from outside a pipe. Recommended for "difficult liquids" including wastewater, cooling water, slurries, sludge, chemicals, viscous liquids and abrasives. The Greyline DFS 5.1 is ideal for pump protection or to activate flow/no-flow alarms.

Easy to Calibrate

The DFS 5.1 control relay can be set to turn ON and OFF at any flow rate between 0.25 and 10 ft/sec (0.075 to 3 m/sec). Insert two links for separate ON/OFF set points or just one link for a Hi or Lo flow alarm. Set the relay actuation time delay from 0 to 80 seconds.
DFS 5.1 Easy Calibration

A bright LED indicator shows the relay state and a LED bargraph shows the flow rate. Electronics are housed in a watertight polycarbonate wall-mount enclosure.
Clamp-on Ultrasonic Sensor for DFS 5.1 Doppler Flow Switch  
The clamp-on ultrasonic sensor mounts on the outside of metal or platic pipes without cutting the pipe or shutting down flow. It works on any pipe diameter 1/2" (12.5 mm) or larger and installs in minutes. There are no moving parts and no maintenance is required. The shielded sensor cable length is 20 ft. (6 m) and can be extended up to 500 ft. (152 m) with an optional Junction Box.

Doppler Flowmeter for Display and Control...

Combine flow control with a complete flow metering solution through the Greyline DFM 5.1 Doppler Flow Meter. It displays flow rate, totalizes and includes 2 fully programmable control relays.

Copyright 2015 [Greyline Instruments Inc.] All rights reserved.
Information in this document is subject to change without notice.