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Discharge fl ow instrumentation awarded independent verifi cation
Responding to the demand for simple but accurate tools for measuring discharge fl ow rates in streams, rivers and channels, NIVUS initially demonstrated a prototype NivuFlow Stick in 2018 and received its fi rst order for a commercial product in 2020. Today, NIVUS is delighted to announce that the NivuFlow Stick has received an independent calibration certifi cate from METAS, the Federal Institute of Metrology in Switzerland.
“This is a signifi cant achievement,” explains Christian Koch, Head of Product Management at NIVUS. “The calibration certifi cate resulted from a series of stringent tests and follows the award of a similar verifi cation certifi cate from NIWA, the National Institute of Water and Atmospheric Research in New Zealand.
“We already have regulatory customers as well as water companies, consultancies, researchers and academia, but third-party verifi cation will provide users with the assurance that they can now measure fl ow quickly, easily and accurately; confi dent in the knowledge that they are using an accurate, independently tested device.”
The NivuFlow Stick is a simple-to-use, portable instrument for fast, accurate fl ow velocity measurements utilising the ultrasonic cross-correlation measurement principle. In contrast with traditional methods, this technology can measure water velocities at different water depths simultaneously and with high resolution. As a result, even relatively unskilled operators can derive an accurate fl ow velocity curve quickly and easily.
Simple, intuitive operating procedures are driven via smartphone or tablet, and data are both displayed in real-time and shared on-site via WLAN. Importantly, any deviations in measurement quality by the NivuFlow Stick are also displayed, and this quality indication is stored with the data.
The system contains no wearing parts and is maintenance-free, and with lightweight components, handling in the water is effortless and safe. The NivuFlow Stick is therefore ideal for discharge measurements in streams and small rivers, as well as for checking the accuracy of fi xed fl ow monitoring equipment.
Summarising, Christian Koch says: “The speed and simplicity of the NivuFlow Stick offer major advantages to customers looking to migrate their instruments from more traditional methods such as ADCP and acoustic Doppler. The new verifi cation certifi cates will therefore provide users with the assurance that they can exploit the benefi ts, whilst also achieving the required levels of accuracy.
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WWEM 2024 SECTION 82
IET SEPTEMBER / OCTOBER 2024
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