Greyline Instruments DFM 6.1 Doppler Flow Meter

Non-contact ultrasonic meter accurately displays, transmits, totalizes and controls flow from outside the pipe.

Features

  • Flow rate: ±0.1 to 40 ft/sec (±0.03 to 12.2 m/sec)
  • Pipe size: 1/2 to 180in (12.7mm to 4.5m)
  • Accuracy ±2%:
    • Requires solids or bubbles of at least 100 microns
    • 75ppm concentration
  • ±0.1%, Linearity ±0.5% of full scale repeatability
  • Large, backlit LCD display
  • 16-Digit totalizer
  • Reverse flow measurement
  • Isolated 4-20mA (1000 ohm load max)
  • 2 programmable control relays
  • 26 Million Point Data Logger

The Greyline Instruments, by Pulsar Measurement, DFM 6.1 doppler flow meter is a simple, non-contact meter designed for applications that would defeat regular contacting flow meters. Because the sensor is mounted on the outside of the pipe, it is unaffected by abrasives or harsh chemicals making it ideal for wastewater, slurries, sludge, chemicals, viscous liquids and abrasives. There is no obstruction to flow and no pressure drop. The DFM 6.1 is recommended for full pipes and any fluid that contains solids or bubbles.

The DFM 6.1 clamp-on sensor is mounted on the outside of any pipe 1/2in / 12.7mm diameter or larger. To measure velocity an acoustic signal is reflected back to the sensor from moving particles or gas bubbles suspended in the fluid. Flow is calculated based on configured pipe ID.

The DFM 6.1 Doppler flow meter includes an ultrasonic sensor, an easy to use 5-key calibration system, a large digital flow rate display with totalizer, isolated 4-20mA output, 26 million point data logger, and two programmable control relays. The sensor is classified as non-incendive and an intrinsically safe sensor is optional.

Greyline Instruments JB2X Sensor Cable Junction Box
Greyline Instruments JB2X Sensor Cable Junction Box

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

In Stock
$58.00
Greyline Instruments PM Enclosure Panel Mount Flange Assembly
Greyline Instruments PM Enclosure Panel Mount Flange Assembly

Enclosure panel mount flange assembly.

$145.00
Greyline Instruments SCR Enclosure Sunscreen
Greyline Instruments SCR Enclosure Sunscreen

Enclosure Sunscreen (iridite aluminum).

$41.00
Greyline PC4 Extra Sensor Mounting Kit
Greyline PC4 Extra Sensor Mounting Kit

Extra sensor mounting kit with couplant and SS clamps for pipes up to 32” (80 cm).

$97.00
Greyline PC4S Doppler Sensor Mounting Kit
Greyline PC4S Doppler Sensor Mounting Kit

With expansion springs.

$135.00
Greyline Instruments MNL Additional Manuals
Greyline Instruments MNL Additional Manuals

Additional Manuals (One supplied with each unit).

$29.00
Greyline SP2 Lightning/Surge Protection Steel Enclosure
Greyline SP2 Lightning/Surge Protection Steel Enclosure

NEMA4.

$935.00
Greyline Instruments SE4-A Velocity Sensor
Greyline Instruments SE4-A Velocity Sensor

Clamp-on Doppler velocity sensor.

Some Models in Stock
Starting at $680.00
Greyline Instruments CC Coupling Compound
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 $52.00
Greyline Instruments DXC Sensor Cable
Greyline Instruments DXC Sensor Cable

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

Starting at $120.00
Part Number Power Input Cable Length Serial Communication Control Relay Price Available
DFM 6.1-A-1-A-1-A-1-A-1-A
Show Full Configuration
Standard: 100 to 240VAC 50/60Hz
Standard: 25ft (7.6m) shielded coaxial pair
Standard: none
Standard: 2 relays, rated 5 amp SPDT, programmable
 $3,460.00 2 in stock
DFM 6.1-A-1-A-1-A-1-B-1-A
Show Full Configuration
Standard: 100 to 240VAC 50/60Hz
50ft / 15m continuous shielded coaxial pair
Standard: none
Standard: 2 relays, rated 5 amp SPDT, programmable
 $3,535.00 2 in stock

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