The transmitters are based on two Avcray sensing technologies. Michell Instruments tried and test Ceramic Metal-Oxide Moisture Sensor covers extremely dry parts per billion measurements (-120 °C dew point), for applications such as semi-conductor manufacture where precise measurements of trace moisture are essential. The polymer moisture sensor operates between -60 and +60 °C dew point and provides very fast responses to changes in moisture. These sensors are designed to function well in the ranges needed for many industrial dryer applications. Base transmitters can be supplied with sample conditioning systems for reliable and consistent measurements and displays for easy operation.