Endress+Hauser introduces the Micropilot NMR81 79 GHz radar for level measurement applications in liquids. The instrument generates a narrow beam angle of 3° or 4°. Measurements are more reliable even in narrow tanks because the radar beam avoids obstacles such as baffles on the tank walls, and is thus unhindered by interfering signals, according to the company.
Measurements right to the bottom in very tall tanks are easier because the beam does not hit the tank walls prematurely. Installation relatively close to the tank wall is possible with the narrow beam angle. The technology permits very long measuring ranges of up to 70 meters. In custody transfer, the instrument measures up to 30 meters with an accuracy of ±0.5mm, according to the company.
The American Petroleum Institute (API) and International Organization of Legal Metrology (OIML) recommend an accuracy of 1mm (1/16”) for the level instrument under factory calibration conditions, and within 4mm (3/16”) for the entire measurement system after installation on the tank, according to the company. Micropilot NMR81 reportedly fulfills all API and OIML requirements. The antenna is equipped with a gas-tight feed-through, a “second line of defense” for handling highly toxic or diffusive products.
