Specifications

RAWS-F Remote Automated Weather Station for Fire Weather
the moisture content of a standard 10-hour fuel moisture dowel. This moisture
represents the moisture content of small-diameter (10-hour time lag) forest
fuels. The fuel temperature probe consists of a Ponderosa pine dowel with a
bored hole and a Model 107 Temperature Probe inserted into the dowel. The
CS205 mounts on the mounting stake with the CS505.
FIGURE 4.7-1. CS515-QD Fuel Moisture/Fuel Temperature
4.7.2 Wiring, Fuel Moisture/Fuel Temperature (part #CS515-QD)
The Campbell Scientific CS505/CS205-QD sensor is connected to the RAWS
connector panel “FM/FT” connector COLOR CODED BROWN.
Connector Panel “FM/FT” connector COLOR CODED BROWN
Connector Pin A CS205 Temp. Signal to CR1000 4L
Connector Pin B Sensor Ground to CR1000 Ground
Connector Pin C CS205 Temp. Excitation to CR1000 EX1
Connector Pin D CS505 FM Enable to CR1000 C8
Connector Pin E CS505 FM Signal to CR1000 4H
Connector Pin F CS505 FM +12V power to CR1000 +12V
4.7.3 Maintenance, Fuel Moisture/Fuel Temperature (part #CS515-QD)
The CS505 Fuel Moisture dowel/element should be changed at least once a
year with a new element in the spring. Since the characteristics of wood
change so rapidly, more frequent replacements may be desirable. To change
the sensor element, loosen the Phillips head screws and replace with a new
element. Tighten the screws after replacing the element.
The CS205 consists of a 107 Temperature Probe and fuel moisture stick. The
CS205 Fuel Moisture Stick should be changed annually or more frequently as
required. The wood should visually appear fresh and new, not gray or
discolored. The CS205 inserts into the compression fitting so that compression
is applied to the split end of the stick gripping the 107 temperature probe.
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