Gsv microtech provides level transmitter, model uli500. The company supplies ultrasonic level transmitters/controllers for small tanks, especially for diesel tanks. Uli500 series instruments are blind transmitters. An ultrasonic wave is pulsed 5 times a second. The reflection of this pulse is received by the sensor. The time taken for the wave to travel to the object and back to the sensor is proportional to the distance of the object from the sensor. The compact size, narrow beam angle and small dead band ensure that these sensors will work reliably for small tanks. These sensors are aggressively priced and are comparable to mechanical level switches for the same tank size. Some of the typical applications includes are measuring level of liquids in small storage tanks and diesel tanks. Other applications include conveyor line counting, web loop tension measurement, open channel flow measurement, collision detection, and more.