Jun 26, 2019



The MantaRay portable area-velocity flowmeter is designed for monitoring storm water, sewage, industrial effluent, irrigation water and natural streams. Monitor flow through open channels, partially full sewer pipes and surcharged pipes without a flume or weir. The product uses a submerged ultrasonic sensor that is hydrodynamically shaped and designed to shed deposits and stringers for reliable operation. Calibration is simple: Enter the pipe diameter or channel dimensions and it automatically computes and displays the flow rate and total.

Greyline Instruments Inc.


11451 Belcher Road South

Largo, FL 33773

United States

Phone: 315.788.9500

Fax: 315.764.0419