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The HMC01 monolithic humidity/temperature sensor combines on one and the same thin glass substrate the temperature sensor and directly abovethe humidity sensor. Conventional combined humidity/temperature sensors consist of two substrates glued together, each with one sensor. This causes several practical and technical measurement problems. For example, if the two substrates separate over time the thermal connectionbetween the two elements, which is very important to the accuracy, will be lost. The sensor has been designed for stable and accurate humidity and temperature measurements in demanding industrial applications.For measurement in continuous high humidity with even the risk of condensation, the sensor can be operated in a controlled heating mode to prevent high humidity drift. The temperature sensor is used as a heating element and is regulated in such a way that the relative humidity close to sensor is kept at 76 %RH. The sensor and forms the core of thehumidity / temperature transmitters of the EE32 / EE33 series.
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