Greyline DFM 6.1 Doppler Flow Meter
Accurate Flow Measurement of “Difficult” Fluids from Outside a Pipe
Measure flow from outside a pipe. The Greyline DFM 6.1 is designed for ''difficult liquids'' that would damage regular flow meters - wastewater, slurries, sludge, chemicals, viscous liquids and abrasives. There is no obstruction to flow and no pressure drop. The non-intrusive, clamp-on ultrasonic sensor fits any pipe 1/2'' (12.5 mm) Inside Diameter or larger. The DFM 6.1 features enhanced performance in a wide range of applications. Improved industrial noise immunity filters potential interference souces.
Use the isolated 4-20mA output to transmit flow to remote displays, recorders or controllers. The programmable relays can be used for flow control, pump protection or flow proportionate pulse. Calibration is easy with the built-in 5-key calibrator. Display and totalize flow in your choice of engineering units (gallons, liters etc). A 128MB data logger is standard, capable of capturing up to 26 million data points. Optional MODBUS RTU via HART is available for connection to automation systems.
Sensor cable can be extended up to 500 ft. (152 m) with no loss of signal. The standard sensor is rated non-incendive for Class I, Division 2 hazardous locations and the DFM 6.1 can be equipped with optional Intrinsic Safety Barriers for sensor installation in Class I, Division I hazardous locations.
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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 4-20 mA (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 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 |
