A simple and efficient, self-contained dew-point hygrometer, with filtration and flow control, for measurement of dew point or moisture content at point of use. It uses the Easidew On-Line to measure dew point in the range –100 to + 20 °C dew point, or moisture content in the range 0-3000 ppm. This well-proven instrument uses the Michell Ceramic Metal-Oxide Moisture Sensor providing accurate and stable measurements. It is part of our service exchange program for simple, cost-effective maintenance.