From automotive manufacturing to the environmental control equipment used in cleanrooms and laboratories, the production of polymers, textiles, ceramics, food, to metal heat treating and more, control of moisture levels is critical. Precise control is impossible, however, without accurate measurement and monitoring. The DewPro® Industrial Moisture Line of transmitters and probes from General Eastern provides economical, accurate, and versatile solutions for a wide variety of industrial process control requirements.

When Moisture Matters

While moisture can be a contaminant in certain process gases or liquids, it may also be crucial to some applications, such as the production or drying of artificial fibers, pharmaceuticals, and a host of other materials. With many process variables, the precise measurement of moisture levels isn’t necessarily straightforward. The DewPro Industrial Series provides accurate, reliable moisture analyzers for dew point temperatures from -15°C to +150°C.

Relative Humidity Sensor Technology

A polymer dielectric sensor provides capacitance technology for gaseous applications with dew point temperatures above -15°C. Interdigitated electrode fingers, a polymer layer, a porous protective metal layer, and a second polymer layer complete the construction of the capacitance sensor element (see illustration above). The capacitance of the polymer sensor is directly related to the relative humidity (RH) of gases. An integrated platinum temperature sensor accounts for the temperature dependence of RH.