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Ultrasonic Doppler Flow Meter DFM 5.1

Ultrasonic Doppler Flow Meter DFM 5.1

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Ultrasonic Doppler Flow Meter for Accurate Flow Measurement DFM 5.1

  • Monitors, Displays, Totalizes and Controls from Outside a Pipe
  • Ideal for full pipes and any liquid containing gas bubbles or solids larger than 100 microns and in concentrations greater than 75 ppm.
  • The DFM 5.1 flow sensor installs without cutting the pipe. It takes just a few minutes to mount on the outside of any pipe.
  • Calibration is easy with the built-in, 5-button keypad.

Special Features

  • Digital processing system tracks flow signals accurately and auto-zeroes with signal loss
  • Noise suppression circuitry filters “dirty” power and electrical interference from most VFD's
  • Automatically converts between measurement units (e.g. gallons or liters)
  • Calibration data and Totalizer values are stored automatically during power interruptions
  • Output “simulation” function simplifies calibration of remote devices (e.g. chart recorders or controllers)
  • Self-tunes to Sensor cable length
  • Benefits of Non-Contacting Flow Measurement
  • No Contact means no maintenance, no sensor fouling, no obstruction to flow, no pressure drop, no corrosion and no pipe cutting or drilling for installation.

Designed for:

  • Raw Sewage
  • Treated wastewater
  • Viscous liquids
  • Chemicals and Acids
  • Sludge and Slurries
  • Solvents
  • Pulp stock
  • Food products
  • Lubricating Oils
  • Crude Oil
  • Cooling Water

Technical Specifications

Flow Rate Range

± 0.1 to 40ft/sec (± 0.03 to 12.2 m/sec)

Pipe Size

Any pipe from ½" to 180" (12.7 mm to 4.5 m)

Accuracy

±2% of reading or 0.05 ft/sec (0.015 m/sec). Requires solids or bubbles minimum size of 100 microns, minimum concentration 75 ppm. Repeatability: ±0.1%, Linearity ±0.5%

Display

White, backlit matrix - displays flow rate, relay states, 16-digit totalizer, operating mode and calibration menu

Calibration

built-in 5-key calibrator with English, French or Spanish language selection

Power Input

100-240 50-60Hz, 5 Watts maximum (with standard features)

Output

Isolated 4-20mA (1000 ohm load max.)

Control Relays

Qty 2, rated 5 amp SPDT, programmable flow alarm and/or proportional pulse

Electronics Operating Temperature

-10° to 140°F (-23° to 60°C)

Electrical Surge Protection

Sensor, 4-20mA output and AC power input