ECHO Process Instrumentation, Inc. products

Non-Intrusive Flow Switch and Flow Velocity using Doppler Ultrasonic Technology! The ECHO FlowSwitch is a simple, reliable Doppler flow switch and liquid velocity meter. It is an encapsulated self-contained clamp-on flow sensor for dirty water and wastewater flow conditions.  It is low cost and pre-calibrated from the factory 0-20 ft/s (6.096 m/s) equals 0-5 VDC proportionally (higher velocities available as an option). It can be custom ordered to any velocity range or provide a TTL Pulse output up to 5000 Hz with a K factor supplied on the calibration sheet.