Campbell Scientific RAWS-F Remote Automated Weather Station for Fire Weather - Manual (Page 26)

RAWS-F Remote Automated Weather Station for Fire Weather
FIGURE 4-7. CS516-QD Fuel Moisture/Fuel Temperature
4.7.2 Wiring
The CS516-LQ attaches to the connector labeled FM/FT, which is color coded
brown. This sensor is internally wired from the RAWS connector panel to the
CR1000.
TABLE 4-7. FM/FT Connector (color coded brown)
Connector Pin Description CR1000 Terminal
A CS205 Temperature Signal 4L
B Sensor Ground
C CS205 Temperature Excitation VX1
D CS506 FM Enable C8
E CS506 FM Signal 4H
F CS506 FM 12 V 12V
4.7.3 Maintenance
The CS506 Fuel Moisture element and 26601 dowel 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 dowel 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 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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