• Easy to install and set up‚ with a single clamp-on sensor
• Built-in 26-million point data logger with USB data transfer
• Modbus RS-485 or HART communication

Greyline 6.1 doppler flowmeter monitors the flow rate of difficult liquids‚ including wastewater‚ chemicals‚ acids‚ slurries‚ abrasives and viscous liquids. Use in any full-pipe application that has suspended solids or entrained bubbles.

This meter does not make contact with the moving fluid and does not require any pipe cutting or drilling. It measures flow by reflecting an acoustic signal back to the sensor from particles or gas bubbles in the fluid. Installation is easy—just mount the strap-on sensor on the outside of any plastic or metal pipe 1/2" or larger. It only takes a few minutes to install‚ and there's no need to shut down your flow system.

This menu-driven flowmeter is easy to operate— five-button programming gets you up and running quickly. The meter features a large digital flow rate display with totalizer that measures flow in either direction‚ and displays positive or negative values. Control the totalizer to subtract reverse flow‚ or to totalize forward flow only. You can even select English‚ Spanish or French directions.

Ultrasonic signals are transmitted and received from the included single-head sensor. The included mounting clamp ensures correct sensor alignment on horizontal or vertical pipes. Standard cable length is 25 feet. Extend cable to up to 500' using extra sensor cable and a sensor cable junction box (both sold separately).

Programmable relays & 4-20 mA output offer control options. Use the isolated 4-20 mA output signal to transmit flow data to remote displays‚ recorders or controllers. Use the two programmable relays for flow control‚ pump protection or flow proportional pulse. The flowmeter can measure reverse flow—a minus sign appears on the display during reverse flow conditions. The 4-20 mA signal‚ relays and totalizer are also configurable for reverse flow. Noise suppression circuitry filters "dirty" power and electrical interference from most VFDs. Terminals are easily removable for electrical connections.

All models feature a built-in 26-million point data logger with Greyline PC software. Download logged data to your computer via a USB memory stick (sold separately). Also features Modbus RTU via RS-485 or HART communication.

Includes: strap-on ultrasonic sensor‚ sensor coupling compound‚ and adjustable stainless steel mounting clamp for pipes up to 32" OD. An intrinsically safe option is available as special order; contact us for details.

• Accuracy: ±2% of reading or 0.1 ft/sec‚ whichever is greater
• Display: white backlit matrix; displays 5-digit flow rate with floating decimal and 16-digit totalizer
• Enclosure: water-tight/dust-tight NEMA 4X (IP66) polycarbonate w/ clear‚ shatterproof cover
• Operating temp: Display: ­10 to 140°F (-23 to 60°C) / Sensor: ­40 to 300°F (-40 to 150°C)
• Velocity range: ±0.1 to 40 ft/sec (min. concentration bubbles or solids 100 microns & 75 ppm)
• Pipe size: 1/2 to 180" ID