New contactless flow sensors for large pipes
Jan 18 2022
NIVUS range of clamp-on sensors now includes a new version that operates based on the ultrasonic transit time difference. Thanks to the 500 kHz measuring frequency, the sensors are ideal for large pipe diameters or for pipe wall materials including asbestos, cement, GRP or multi-layer structures. These sensors are perfect for use with pipes with wall thicknesses of up to 30 mm. The new sensor is best suited for higher flow velocities in comparison to the existing 1 MHz model; it also provides a greater acoustic penetrability through the fluid. Even in scenarios where there are interferences such as instances of solids, gas bubbles or deposits on the inner wall of the pipe, the new sensor still provides a strong and clear reading.
These new sensors are mounted on the outside of the pipe and take precise measurements without contact with the fluid, thus putting and end to any need for drilling or any mechanical stress on the pipe. These sensors can be installed and maintained without halting the process. Moreover, compliance with the highest hygiene standards are met, facilitated by the absence of contact with the measured liquid. The sensors are well protected within an IP68 housing which enables their use in the harshest operating environments or even underground. Special, integrated polymer pads ensure a permanently reliable acoustic coupling between the sensor and the pipe.
For the use with these sensors, NIVUS offers permanent transmitters for regular installation in control cabinets or indoors. NIVUS GmbH also offers rugged and battery-operated transmitters for temporary or permanent use in tough environmental conditions. When combined with NIVUS’ solar solution, it enables around-the-clock measurement even where there is no power supply. All systems enable data access through an online measurement data portal.
NIVUS have designed their new sensors for use on drinking water pipelines with large nominal diameters or special pipe wall materials, corroded and incrusted pipelines, monitoring of water inflows, monitoring of pressure pipelines, recording of turbine efficiency or recording of cooling process water demand, as well as recirculation pipelines with a high solids content.
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