Greyline Instruments PDFM 4.0 Portable Doppler Flow Meter Trash Pumps 3 hours at 1/4 load

3 hours at 1/4 load with Eco-Throttle

GilAir Plus has the capability of automatically correcting the flow rate for altitude changes to maintain constant flow accuracy of +/- 5% over this barometric pressure range

Three-button operation (no menus) and an on-board operating manual

conductivity/temperature

Greyline Instruments PDFM 4.0 Portable Doppler Flow Meter Trash Pumps 3 hours at 1/4 loadIt'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,