Oct 15, 2019


greyline flowmeter

Monitor flow through open channels, partially full sewer pipes and surcharged pipes without a flume or weir. This new MantaRay Portable Area-Velocity flowmeter is designed for municipal storm water, combined effluent, raw sewage and irrigation water. 

The MantaRay comes with a submerged ultrasonic sensor that is hydrodynamically-shaped and designed for reliable operation. It is powered by built-in, rechargeable batteries. Watch your flow in real time. It displays and data logs flow-rate and total flow.

Greyline Instruments Inc.


11451 Belcher Road South

Largo, FL 33773

United States

Phone: 315.788.9500

Fax: 315.764.0419