Greyline TTFM 6.1 Transit Time Flow Meter
Accurately measure the flow rate of relatively clean, non-aerated liquids in full pipes. The Greyline TTFM 6.1 Transit Time Flow Meter works on a wide range of pipe sizes and materials including carbon steel, stainless steel, ductile iron, concrete-lined ductile iron, cast iron, PVC, PVDF, fiberglass, copper, brass, aluminum, and pipes with bonded liners including epoxy, rubber, and Teflon. Ultrasonic transducers mount on the outside of a pipe without shutting down flow.
The Greyline TTFM 6.1 operates by measuring the “transit time” or “time of flight” for ultrasonic sound pulses transmitted from one transducer to another. Depending on the mounting configuration, the signal may cross the pipe once, twice, or four times. To measure flow the transit time is compared between ultrasonic signals traveling upstream and downstream.
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