The Sonocontrol 15 by Sonotec Ultraschallsensorik Halle GmbH is a Non-intrusive ultrasonic level switch designed to detect whether a tube is filled with liquid or liquefied gas. It features its performance that signifies speed and precision. The equipment can function without contact on the target surface of the measured tube. This function by simply measures through tube wall which is the ideal in pharmacy and fine chemicals industries. It can also serve as an attachment in a sensor in order to protect pumps or to monitor filling systems. The whole unit unit uses a two wire system which enables it to perform without being interrupted. Plus, an optional sensor is offered by the manufacturer making it suitable for use in areas with risk of explosion.