With 79 GHz transmission frequency, Micropilot NMR81 produces sharply focused microwave beam angle of 3° or 4° that ensures safe and reliable measurements without any interfering signals even in narrow tanks with baffles and down to bottom of tall tanks. Measuring ranges reach up to 70 m, and instrument measures up to 30 m with accuracy to ±0.5 mm in custody transfer applications. Product is also equipped with gas-tight feed-through and fulfills all API and OIML requirements.