The RTD is a portable liquid level gauge designed for restricted gauging of petroleum products. The sensor is calibrated once at the factory and does not require subsequent calibration. The temperature probe is a RTD element. The characteristics of the RTD are stored inside the sensor. The sensor is sending true temperature values to the electronic box. Therefore changing a sensor or a tape does not require a new calibration. The unit is used for custody transfer, inventory control measurement and free water detection on marine vessels and shore tanks. The RTD Rtex has to be connected to a HERMetic vapour control valve fixed on the tank. Advantages: Continuous temperature reading, ullage and interface detection. Easy access for battery exchange. High accuracy and stability. Sensor exchange without needs of new calibration. No temperature drift. No degradation of the sensitivity due to sensor ageing. Interchangeable adaptors for connection on different vapour control valves. Tape cleaning devices, window wiper and tape protection on all units as standard. Low maintenance cost: Fully modular unit. Change tape, storage tube, sensor or instrument unit yourself. Easy and detailed instructions in Operation and Service Manual.