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DFM 6.1 Doppler
Brand: Pulsar MeasurementGaining flow measurement inside a pipe can sometimes be tricky. The DFM 6.1 Doppler Flow Meter works as a non-contacting, clamp-on flow meter to offer effective clamp-on pipe flow measurement from outside the pipe.
Its Doppler technology makes it perfect for use as a water flow meter, specifically for difficult liquids, or liquids with suspended solids such as wastewater, slurries, sludge, chemicals, viscous liquids, and abrasives.
The non-invasive Doppler ultrasonic flow meter fits a pipe 12.5 mm (0.5 in) inside diameter or larger, and clamps to the outside of the pipe, gaining flow measurement readings without interrupting the process.
External Sensor No Contact, No Maintenance:
To measure velocity an acoustic signal is reflected to the sensor from moving particles or gas bubbles suspended in the fluid. Flow is calculated based on the configured pipe inside diameter.
Installation is easy – without shutting down the flow system. No contact is made with the moving fluid, and no pipe cutting or drilling is required. There is no fouling or scale build-up on the sensor.
The easy–to–use 5-key configuration system on the DFM 6.1 Doppler Flow Meter makes setup and installation quick, simple, and easy. The unit features a large digital flow rate display with a totalizer, isolated 4-20 mA output, 26-million-point data logger, and two programmable control relays.
Reverse Flow Measurement:
The DFM 6.1 Doppler Flow Meter measures flow in either direction and will display positive or negative values. You can control the totalizer to subtract reverse flow or to totalize forward flow only.
Use Doppler pipe flow measurement devices to control flow within a process, protect pumps from no-flow or dry pumping, or for flow proportionate use. You can even use it to test existing equipment to ensure it's still providing accurate pipe flow measurement.
Features- Enhanced performance
- Easy to install and configure
- Non-Contacting, clamp-on, ultrasonic sensor
- Works on a large variety of pipe materials and sizes
- Large, back-lit flow rate display and totalizer
- Isolated 4-20 mA output
- 2 Programmable control relays
- Optional Modbus RTU or HART output
- 128 MB data logger (26 million points)
Specifications
Brand
Flow Rate Range
- ± 0.03 to 12.2 m/s (± 0.1 to 40 ft/s)
Pipe Size
- I.D. 12.7 mm to 4.5 m (0.5 in to 180 in)
Accuracy
- Linearity ± 0.5 %
- ± 2 % of Reading or 0.03 m/s (0.1 ft/s) Whichever Is Greater. Requires Solids or Bubbles Min. Size of 100 microns, Min. Concentration 75 ppm
- Repeatability: ± 0.1 %
Display
- White, Backlit Matrix - Displays Flow Rate, Relay States, 16-Digit Totalizer, Operating Mode, and Calibration Menu
Configuration
- Built-in 5-Button Keypad with English, French, or Spanish Language Selection
Power Input
- 100-240 Vac 50/60 Hz, 10 VA Max.
- Optional: 9-32 Vdc, 10 W Max.
Output
- Isolated 4-20 mA (1,000 ohm Load Max.) or 0-5 Vdc (Field Selectable)
Control Relays
- Qty 2, rated 5 amp SPDT, Programmable Flow Alarm, and/or Proportional Pulse
Data Logger
- Built-in 26 Million Point Logger with USB Output and Windows® Software
Enclosure Heater
- NEMA 4X (IP66) Polyester with a Clear Polycarbonate Face
Exposed Material
- 316 SS
Operating Temperature
- Sensor: -40° to 150° C (-40° to 300° F)
- -23° to 60° C (-10° to 140° F)
Certifications & Approvals
- ATEX/IECEx
- CE
- CSA