Fuel moisture sensor CS506

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The CS506 is a fuel moisture sensor that measures the moisture content of the 26601 10-hour fuel moisture stick. The 26601 emulates the moisture content of similarly sized twigs on the forest floor. The CS506/26601 combination is used to assess forest fire fuel and is often incorporated in our prewired or custom fire-weather stations. Benefits and Features - Compatible with most Campbell Scientific data loggers - Companion product to CS205/107 fuel temperature sensor; can be mounted on the same stake - Can automatically monitor changing fuel conditions without having to visit the measurement site - Compatible telemetry options include spread spectrum radios, narrow-band radios, cellular phones, and satellite transmitters The CS506 reports the status of small-diameter (10-hour) forest fire fuels as percent moisture by weight (1%=1 g). It consists of an epoxy-encapsulated electronics package that uses Time Domain Reflectometry (TDR) technology to measure the moisture content of the 10-hour Fuel Moisture Stick. The sensor produces a ±0.7-Vdc square-wave frequency that is read using an analog or pulse channel on a Campbell Scientific datalogger. The datalogger then converts the frequency measurement to percent fuel moisture via a quadratic calibration.