Greyline Instruments PDFM 4.0 Portable Doppler Flow Meter Trash Pumps Although this test is quite

Although this test is quite accurate for dry soils

viscous liquids and abrasives

and manufacturing facilities

conductivity/temperature

No manometer fluid to evaporate

Greyline Instruments PDFM 4.0 Portable Doppler Flow Meter Trash Pumps Although this test is quiteIt's ideal for flow troubleshooting, balancing and checking performance of permanent flow meters. The new PDFM 4. 0 is fast and easy to operate you can mount the sensor on the outside a pipe in less than a minute. Use the built in keypad and calibration menu to set up the flowmeter for your application. The PDFM 4. 0 works on any liquid containing bubbles or solids and is recommended for "difficult liquids" like wastewater, slurries, sludge,