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RAWS-P Remote Automated Weather Station
5.3 Battery
5.3.1 General Description, Battery
The RAWS battery is a rechargeable 12 Volt battery. The battery requires a
regulated charging source provided by the RAWS Charger/Regulator (part
#CH100) connected to an unregulated solar panel or a wall charger.
RAWS rechargeable batteries are designed to be float
charged. Permanent damage occurs and battery life is
shortened if the battery is allowed to discharge below
10.5 volts.
WARNING
5.3.2 Wiring, Battery
The RAWS rechargeable battery should be connected to the CH100
charger/regulator INT (Internal) connector. The battery red lead connects to
the positive battery terminal and the black lead connects to the negative
terminal. If desired, an external battery can be connected to the CH100
charger/regulator EXT (External) connector. It is possible to leave two
batteries connected. The battery connections are diode isolated; however, if
one of the batteries fails, it could draw all the charging current and the other
battery will be discharged. An “external battery cable” (part #6186) ships with
the RAWS.
Reversal of battery polarity will damage the CH100 or
battery.
WARNING
It is possible to leave two batteries connected. The battery
connections are diode isolated; however, if one of the
batteries fails, it could draw all the charging current and the
other battery will be discharged.
CAUTION
5.3.3 Troubleshooting, Battery
Measure the +12 V and Ground terminal on the CR1000 printed circuit board
wiring panel. Acceptable readings are +11 VDC to +14 VDC. Use PC200W
software to collect the 1-HR data table from the CR1000 datalogger and review
the historical record of battery voltage.
5.4 GOES Transmitter
5.4.1 General Description, GOES Transmitter (part #TX312)
The High Data Rate GOES transmitter (part #TX312)
shown in Figure 5.4-1
supports one-way communication, via satellite, from a Campbell Scientific
datalogger to a ground receiving station. Satellite telemetry offers a convenient
communication alternative for field stations where phone systems or RF
systems are impractical or rendered unreliable after a tragedy to the local
infrastructure. Data transmission rates of 100, 300, and 1200 bps are
supported. Because clock accuracy is critically important for GOES satellite
telemetry, the TX312 includes a robust, TCXO-based real-time clock and a
GPS receiver.
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Summary of Contents for RAWS-P
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