Greyline Instruments DFS 5.1 Doppler Flow Switch

Name: Greyline Instruments DFS 5.1 Doppler Flow Switch
Price: 1260.0 USD
Availability: InStock

Precision flow control from the outside of metal or plastic pipes.

Starting at $1,260.00

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Manufactured

By Pulsar Measurement, Trading Name of Greyline

Includes

FREE Ground Shipping
FREE Lifetime Tech Support

Availability

Some models in stock. View available part numbers.

Product Manual Product Specs

Features

Controls Flow with no pressure drop, no sensor fouling and no maintenance
Flow control from the outside of metal or plastic pipes
Installs in Minutes
Pipe Size: Any pipe ID from ½" to 180" (12.5 mm to 4.5 m)
5 amp DPDT Control Relay
Ideal for "difficult" liquids
Adjustable ON/OFF set-points
Hi or Lo flow alarm mode
Adjustable time delay
Relay status LED
Flow rate LED bargraph
Watertight, dust tight NEMA4X (IP 67) polycarbonate enclosure with a clear shatter-proof face
Easy Calibration

What's in the Box

SE4 ultrasonic clamp-on sensor
20 foot sensor shielded coaxial pair cable
Silicone coupling compound
Stainless steel pipe clamp Kit for 0.5 to 16” pipes
Installation and operation manual

The Greyline Instruments by Pulsar DFS 5.1 Doppler flow switch provides accurate flow control from outside of the pipe. Recommended for difficult liquids including wastewater, cooling water, slurries, sludge, chemicals, viscous liquids and abrasives, the DFS 5.1 is ideal for pump protection or to activate flow/no-flow alarms.

The DFS 5.1 ultrasonic sensor can be mounted on the outside of any metal or plastic pipes from 1/2 to 180" I.D. and installs in minutes. 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. 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). The DFS 5.1 relay time delay is adjustable from 0 to 80 seconds to prevent nuisance alarms and relay "chatter" in turbulent flow. Includes switch selectable "normal" and "failsafe" operating modes.

The DFS 5.1 has no moving parts and no maintenance is required. 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.

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. Switch adjustments and electrical connections are fast and easy.

Spec Sheets

Greyline Instruments DFS 5.1 Doppler Flow Switch Datasheet PDF (448 KB)

Manuals

Greyline Instruments DFS 5.1 Doppler Flow Switch Manual PDF (988 KB)

Other

Cables

Greyline Instruments DXC Sensor Cable

RG174U shielded coaxial pair available in lengths up to 500 feet.

Starting at $130.00

Sensors/Probes

Greyline Instruments SE4-A Velocity Sensor

Clamp-on Doppler velocity sensor.

Some Models in Stock

Starting at $720.00

Accessories

Please consider these optional accessories.

Greyline Instruments JB2X Sensor Cable Junction Box

NEMA4X/IP66 polycarbonate junction box for extending sensor cable lengths.

$62.00

Greyline Instruments CC Coupling Compound

Acoustic couplant is gel applied to the sensor face to ensure a complete acoustic pathway between the sensor and the pipe wall.

Starting at $55.00

This product can be used in the following applications:

Part Number	Power Input	Price	Available
DFS 5.1A-1-A Show Full Configuration	Standard, 100-240VAC 50/60Hz	$1,260.00	1 in stock

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