The KOBOLD NMT level transmitter is an accurate, float-controlled sensor designed for continuous level sensing. It is comprised of two parts: the magnetostrictive sensor within the measuring tube and the four-wire transmitter in the connection box. The measurement principle is based on echo time or time of flight. A magnetostrictive wire is tensioned inside the measuring tube and current pulses are transmitted though the wire generating an annular magnetic field around the wire. The wire is axially magnetized by magnets fitted within the float. Due to the positioning of both magnetic fields, a torsional impulse is generated in the vicinity of the float magnet, which propagates with ultrasonic speed in both directions. The distance from the float magnet to the defined zero-point is measured by the echo time principle. The integrated electronic module transforms the signal into a standardized analog signal. Common uses for the NMT include: the chemical industry, pharmaceutical industry, tank farms, power stations, and the process industry.