Greyline DFM 6.1 Doppler Flow Meter

Gaining accurate flow measurement inside a pipe can sometimes be tricky. The Greyline DFM 6.1 Doppler Flow Meter offers clamp-on pipe flow measurement from outside the pipe. Its Doppler technology makes it perfect for 'difficult' liquids, or liquids with suspended solids such as wastewater, slurries, sludge, chemicals, viscous liquids, and abrasives. The non-invasive Doppler flow meter fits any pipe 12.5 mm (0.5 in) inside diameter or larger and clamps on the outside, gaining flow measurement readings without interrupting the process.

The DFM 6.1's easy-to-follow, 5-button menu keypad makes setting up parameters of the flow application quick and easy and works on the majority of pipe materials. The Doppler technology sends a signal through the pipe wall and is reflected off the particles within the liquid, the change in frequency is reflected on the controller in the form of pipe flow measurement.

Use Doppler pipe flow measurement 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.

Technical Specifications

General Specifications
Spec name:	Description:
Flow Rate Range	±0.03 m/s to 12.2 m/s (±0.1 ft/s to 40 ft/s) in most applications
Pipe Size	Any pipe ID from 12.7 mm to 4.5 m (0.5 in to 180 in)
Accuracy	±2% of reading or 0.03 m/s (0.1 ft/s) whichever is greater. 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
Configuration	Built-in 5-button keypad with English, French, or Spanish language selection
Power Input	100-240 V AC 50/60 Hz, 10 VA maximum Optional: 9-32 V DC, 10 W maximum
Output	Isolated 4-20mA (1000 ohm load max.) or 0-5 V DC (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 a USB output and Windows software
Enclosure Heater	NEMA4X (IP 66) polyester with a clear polycarbonate face
Operating Temperature (Electronics)	-23 °C to 60 °C (-10 °F to 140 °F)
Shipping Weight	6.3 kg (14 lbs)

Sensor Specifications
Spec name:	Description:
Model SE4	Single-head ultrasonic with 7.6 m (25 ft) shielded cable and stainless steel mounting kit for pipes 12.7 mm (0.5 in) ID or larger. Designed to withstand accidental submersion to 10 psi. Certified non-incendive for Class I Division 2, Groups A, B, C, D hazardous locations
Operating Temperature	-40 °C to 150 °C (-40 °F to 300 °F)
Exposed Materials	316SS

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