The EKFM built-in duct sensor is used to measure the temperature of liquids and gases in pipes, air ductsor tanks. The resistance of the sensoris temperature-dependent and is transformed linearly into a current signal of between 4 and 20 mA or a voltage signal of between 0 and 10 V. The transducer is calibrated for the following measuring ranges by default: - 50 … + 50 °C, 0 … + 50 °C or 0 … + 100 °C. A special installation  flange (MF) is required when installingthe sensor in an air duct. If the sensor is to be used in liquids, nickel-plated brass dip sleeves (THMs / 200) are required. In aggressive media, the use of stainless steel (V4A) dip sleeves (THV / 200) is recommended. Dip sleeves and installation flanges are not included in standard delivery and must be ordered separately as accessories.