Master Greyline Ultrasonic Flow Meter & Promo Items. The greyline instruments ptfm 1.0 ultrasonic flow meter uses transit time technology to make accurate flow measurements of clean liquids with less than 2% solids or gas bubbles; The greyline pdfm 5.1 ultrasonic flow meter works on any liquid containing bubbles or solids and is recommended for “difficult liquids” like wastewater, slurries, sludge,.
The time between transmitted and received signals is measured by the flow meter. Greyline ultrasonic flow meter portable doppler flow meter features : You can control the totalizer to subtract reverse flow or to totalize forward.