TTFM FLOWMETER OVERVIEW
The new Greyline TTFM 1.0 Transit Time Flow Meter accurately measures the flow rate of clean, non-aerated liquids like water, chemicals, and oils in full pipes. Ultrasonic transducers mount on the outside of a pipe with no flow restriction and without having to shut down your system. Flow rate is displayed on the large, backlit display along with totalizer and signal strength. Use the built-in control relays for flow alarms or flow proportionate pulse. Connect the isolated 4-20mA output to PLC's or controllers. Use the built-in keypad for fast, easy calibration with menu selection of pipe diameter, pipe material, liquid type and measurement units (gallons, liters etc). Settings, calibration values and totalizer are retained during power interruptions.
The TTFM 1.0 works on a wide range of pipe sizes and materials including carbon steel, stainless steel, ductile iron, cast iron, PVC, PVDF, fiberglass, copper, brass, aluminum and pipes with bonded liners including epoxy, rubber and Teflon.
The TTFM 1.0 operates by measuring the “transit time” or “time of flight” for ultrasonic sound pulses transmitted from one transducer to another.
NOTE: Each unit listed below includes a NEMA 4X enclosure, 20 foot sensor cable, 2 control/alarm relays, 4-20mA output and all mounting hardware. Contact us for options and detailed specifications.
transit time flowmeter REQUIREMENTS
- The pipe wall and liquid must be able to conduct sound.
- The liquid must be relatively clean, containing no more than 10% solids of any kind.
- There must be full pipe flow with a minimum velocity.