Product Information - CS505 (Discontinued)
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Relative Humidity Fuel Moisture Sensor (Head Only)
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Model Cable Length
CS505-L Custom
Manual, Version Date: May, 2008  Manual

Features

  • Measures moisture content of USFS-specified, 10-hour, Ponderosa pine dowel
  • Dowel dimensions are the same as those used in fuel moisture racks
  • Dowel is easily replaced in the field

General Description

Automated fuel moisture can be made using Campbell Scientific's CS505 Fuel Moisture sensor. The CS505 measures the moisture content of a ponderosa pine dowel that is fabricated to USFS specifications. The dowels have the same 1/2 in diameter, 20 in long dimensions as those used on the traditional weighing fuel moisture racks. The dowels have undergone two additional sorts to optimize probe-to-probe repeatability and to allow probe interchangeability without individual calibration.

The CS505 Fuel Moisture Sensor produces a ±2.5 volt square wave. The frequency of the square wave is read with an analog or pulse channel of a CSC datalogger and is converted to percent fuel moisture using a quadratic calibration. The response is similar to the traditional weighing racks because the entire dowel surface is exposed for moisture exchange.

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