Specifications

RAWS-F Remote Automated Weather Station for Fire Weather
3.5 Wind Speed and Direction
A wind sensor should be located over open level terrain and at a distance of at
least ten times (EPA) the height of any nearby building, tree, or other
obstruction.
3.6 Barometric Pressure (optional)
The barometric pressure sensor is mounted to the back plate inside the RAWS
environmental enclosure.
3.7 Fuel Moisture and Fuel Temperature (optional)
The fuel moisture and fuel temperature sensor should be left outside at the field
site continually exposed to the same conditions as forest fuels. The fuel
moisture and fuel temperature dowel rods absorb and desorb moisture from its
surroundings. Install the probes horizontally on the mounting stake and face
the sensors south (northern hemisphere) above a representative forest floor duff
layer. Place the sensor away from foot traffic areas.
4. Sensor Maintenance, Calibration, and
Troubleshooting
4.1 Maintenance
Proper maintenance of weather station components is essential to obtain
accurate data. Equipment must be in good operating condition, which requires
a program of regular inspection and maintenance. Routine and simple
maintenance can be accomplished by the person in charge of the weather
station. More difficult maintenance, such as sensor calibration, sensor
performance testing (i.e., bearing torque), and sensor component replacement,
generally requires a skilled technician, or send the instrument to Campbell
Scientific. A station log should be maintained for each weather station that
includes equipment model and serial numbers and maintenance that was
performed.
Contact Campbell Scientific, Inc., phone [phone], for an
RMA number before returning sensor or equipment for service.
NOTE
4.2 Air Temperature and Relative Humidity
4.2.1 General Description, Air Temperature and Relative Humidity (part
#HMP45C-QD)
The Vaisala Air Temperature and Relative Humidity Sensor (part #HMP45C-
QD) shown in Figure 4.2-1 contains a Platinum Resistance Temperature
detector (PRT) probe and a Vaisala HUMICAP® 180 capacitive relative
humidity probe. The probe output for each sensor is a voltage.
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