Specifications

RAWS-F Remote Automated Weather Station for Fire Weather

5.7.4 Calibration, CR1000 Datalogger (part #CR1000)

Recalibrate the CR1000 datalogger every two years. Obtain a Return Material

Authorization (RMA) number before returning the CR1000 to Campbell

Scientific for recalibration.

5.7.5 Troubleshooting, CR1000 Datalogger (part #CR1000)

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 “CS I/O” connector using our CS I/O 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. If problems persist, try a substitute. Contact a

Campbell Scientific applications engineer for assistance. Obtain a Return

Material Authorization (RMA) number before returning this equipment to

Campbell Scientific for repair.

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 to 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.