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The world’s first radar for measuring liquid levels using a transmitting frequency of 80 GHz.

The new Micropilot NMR81 for high accuracy custody transfer applications is certified by independent test authorities to an accuracy of up to ±0.5mm. The 79 GHz technology features an array of advantages:

Stay focused

Micropilot NMR81 utilizes a transmitting frequency of 80 GHz, which produces a sharply focused beam angle of 3° or 4°, depending on the antenna selection. In contrast, a 10 GHz radar instrument with an antenna of the same size has a beam angle of 21°. Measurement even in tall narrow tanks or near to the tank wall is highly reliable because the radar beam avoids objects such as pipes or baffles on tank walls.

Longer measuring ranges

Thanks to focusing, it is easier to measure down to the tank bottom using the 80 GHz technology because the beam does not hit the converging interior walls. In general, longer measuring ranges than with other technologies are possible – and the accuracy stays the same. Our tank gauging expert, Micropilot NMR81, achieves maximum accuracy of ± 0.5mm (1/32inch) over measuring ranges up to 30m (98ft).

  • Micropilot NMR81 ©Endress+Hauser

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