Doppler ultrasonic flow meter PDFM 5.1
for liquidsfor solidsclamp-on

Doppler ultrasonic flow meter
Doppler ultrasonic flow meter
Doppler ultrasonic flow meter
Doppler ultrasonic flow meter
Doppler ultrasonic flow meter
Doppler ultrasonic flow meter
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Doppler ultrasonic
for liquids, for solids
clamp-on, portable, vertical
stainless steel
4-20 mA
Protection level
IP67, rugged
industrial, for the pharmaceutical industry, for water treatment, for wastewater treatment, for the food industry, for the beverage industry, irrigation
Other characteristics
non-contact, digital, compact, with LCD display, direct-reading, with data logger, remote, with battery, with indicator-totalizer
Process pressure

Min.: 0 psi

Max.: 10 psi

Process temperature

Min.: -40 °C (-40 °F)

Max.: 150 °C (302 °F)


The Greyline PDFM 5.1 Portable Doppler Flow Meter works on any liquid containing bubbles or solids and is recommended for "difficult liquids" like wastewater, slurries, sludge, chemicals, viscous liquids, and abrasives. Ideal for flow troubleshooting, balancing, and checking the performance of permanent flow meters. Fast and easy to operate – you can mount the sensor on the outside of a pipe in less than a minute. Use the built-in keypad and calibration menu to set up the flow meter for your application. The Greyline PDFM 5.1 is AC/DC powered with built-in NiMH batteries and an external charger. With its 4-20 mA output, you can use the Greyline PDFM 5.1 as a spare transmitter in critical applications. For flow studies and troubleshooting use the built-in 300,000 point Data Logger. Retrieve data logs with 'Greyline Logger' software – included free with each Greyline PDFM 5.1. Clamp-on Ultrasonic Transducer Handheld Meter with large backlit LCD Display and Totalizer Internal Battery and/or AC Powered Built-in 5-Key Calibrator 300,000 point Data Logger USB Output and Windows software 4-20 mA Output Rugged, watertight Carry Case Flow Rate Range - ± 0.03 m/s to 12.2 m/s (± 0.1 ft/s to 40 ft/s) in most applications Flow Rate Range - Ultrasonic Sensor mounts on any pipe from 12.5 mm to 4.5 m (0.5 in to 180 in) ID Display - White, backlit matrix - displays flow rate, totalizer, operating mode, and calibration menu


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