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.