Area-velocity flow meter MantaRay
ultrasonicfor waterfor wastewater

area-velocity flow meter
area-velocity flow meter
area-velocity flow meter
area-velocity flow meter
area-velocity flow meter
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for water, for wastewater, rainwater
Other characteristics
with LCD display, compact, IP67, 4-20 mA, with display, with LED display, maintenance-free, custom, IP66, plastic tube, electronic, with pulse output, open-channel, high-temperature, area-velocity, with data logger, remote, abrasion-resistant
industrial, for low flow rates, for the pharmaceutical industry, for environmental analysis, for marine applications, irrigation, for partially-filled pipes, for underwater applications
Process temperature

Min.: -15 °C (5 °F)

Max.: 80 °C (176 °F)


The Greyline MantaRay measures flow in open channels, partially filled and surcharged pipes using an ultrasonic sensor. It's designed for monitoring stormwater, sewage, industrial effluent, irrigation water, and natural streams. The Greyline MantaRay displays and datalogs flow rate and total flow, as well as, connects to samplers, SCADA, and telemetry systems. The Greyline MantaRay uses a submerged ultrasonic sensor to continuously measure flow or reverse flow in open channels, partially filled or surcharged pipes. The sensor is a completely sealed ultrasonic unit with no orifices or ports. It is hydrodynamically shaped and designed to shed deposits and stringers for reliable operation in sewage, stormwater, and stream flow applications. Measures flow in partially filled pipes and open channels No flume or weir required 4-20 mA and Relay outputs for connection to Samplers and SCADA Powered with built-in rechargeable NiMH batteries 2 million point data logger with USB output to Flash drives Backlit LCD display for flow rate, totalizer and menu system Channel Types - Round pipe, rectangular, trapezoid, egg, or custom shapes Electronics Enclosure - IP 67 polycarbonate Accuracy - Level: ±0.25% of range or 1 mm (0.04 in). Velocity: ±2% of Reading Repeatability & Linearity ±0.1%



*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.