Aquar System - Model A327 -Infrared Moisture and Density Sensor for Paper and Cardboard Web

The measuring and reference wavelengths are selected in ranges of 1.3 — 2.3 microns or 3 - 4 microns, depending on the paper web weight. The sensor "A 327" within an operating range of ambient temperature is not sensitive to its changing due to high stability of photoresistor energy characteristic, provided by thermoelectric microprocessor system of thermostating and air blowing.

The moisture and paper weight sensor "A 327" consists of a microprocessor unit (for processing and indication), infrared emitter, the microprocessor receiver unit and a power unit. Emitter and receiver units are mounted on the bracket on the opposite sides of paper web.