Greyline is a worldwide leader in ultrasonic instrumentation for wastewater, industrial, and environmental markets. Since 1986 we have developed, manufactured and marketed industrial flow and level monitoring instruments including ultrasonic level transmitters, clamp-on ultrasonic flow meters, and open channel flow meters.

Greyline’s primary market is environmental - especially water and wastewater treatment systems. Customers include industry and municipalities.

Modern research facilities at Greyline include closed pipe and open channel flow systems. With years of steady growth, Greyline products are sold and supported worldwide. 

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