RAWS-H Remote Automated Weather Station
5.7.2 Wiring, CR1000 Datalogger
The CR1000 datalogger is mounted inside the RAWS environmental enclosure
and fastened to the CR1000 printed circuit board wiring panel. Connect 12 V
power to the CR1000 printed circuit board wiring panel green power
connector. The CH100 ON-OFF switch applies power to the 12 V terminals.
5.7.3 Troubleshooting, CR1000 Datalogger
If a problem with the CR1000 datalogger is suspected, the CR1000 may be
checked by connecting the CR1000KD to the CR1000 printed circuit board 9-
Pin “CSI/O” connector using the 9-pin serial cable (part #10873). The
CR1000KD display should be visible. If the display is not visible, check the
CR1000 printed circuit board for 12 volt power. If the CR1000 is unresponsive
to CR1000KD key strokes, then there might be a problem with the CR1000
datalogger.
6. Desiccant
6.1 When to Replace Desiccant
A humidity indicator card and desiccant packs are provided with the weather
station. Place the humidity indicator card and 2 ea. desiccant packs inside the
enclosure. Desiccant packets inside the enclosure should be replaced with
fresh packets when the upper dot on the indicator begins to turn pink. The
indicator tab does not need to be replaced unless the colored circles overrun. A
humidity indicator card (part #6571) and desiccant pack (part # 4905) may be
ordered through Campbell Scientific. Desiccant packs inside of the datalogger
do not require replacement under normal conditions.
6.2 Reusing Desiccant
Customers can reactivate saturated desiccant packets. Care must be taken. If
the heating process is too rapid, water vapor is released too quickly causing too
much pressure to build up inside the packets so that the packets burst.
Standard Oven Method:
1.
Bake at an oven temperature of 125ºF for 2 hours.
2.
Increase the oven temperature to 175ºF and bake for 2 hours.
3.
Increase the oven temperature from 245ºF to 250ºF and bake for 12 hours.
The optimum situation for reactivation is to use a recalculating oven that has a
ramping temperature. The desiccant should bake for 16 hours, and the final
temperature should be 245ºF to 250ºF.
7. Sensor and Equipment Maintenance
7.1 Sensor and Equipment 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
14
