Specifications

RAWS-F Remote Automated Weather Station for Fire Weather

4.4.2 Wiring, Pyranometer (part #CS300-QD)

The pyranometer sensor is connected to the RAWS connector panel “SOLAR

RAD SDI-12” connector COLOR CODED GREEN. The pyranometer sensor

is internally wired from the RAWS connector panel to the CR1000 datalogger.

Connector Panel “SOLAR RAD SDI-12” connector COLOR CODED GREEN

Connector Pin A Solar Sensor + to CR1000 3H

Connector Pin B Solar Sensor - to CR1000 3L/AG (3L shorted to

AG)

Connector Pin C Solar Sensor Gnd to CR1000 AG

Connector Pin D SDI-12 Ground to CR1000 Ground*

Connector Pin E SDI-12 Signal to CR1000 C5* (*Note: 2

SDI-12

sensor)

Connector Pin F SDI-12 12V to CR1000 12V*

4.4.3 Maintenance, Pyranometer (part #CS300-QD)

The pyranometer must be kept clean. Routinely check for and remove any

foreign material, dust or debris on the sensor head. The debris can be removed

with a blast of compressed air or with a soft bristle, camel hair brush. Handle

the sensor carefully when cleaning. Be careful not to scratch the surface of the

sensor.

4.4.4 Calibration, Pyranometer (part #CS300-QD)

Recalibrate the pyranometer annually. Obtain a Return Material Authorization

(RMA) number before returning this sensor to Campbell Scientific for

recalibration.

4.4.5 Troubleshooting, Pyranometer (part #CS300-QD)

Check the sensor cable. Disconnect the connector and use a DVM to check the

voltage between Pin A Solar Sensor (+) and Pin B Solar Sensor (-). The

voltage should be 0 to 200 mV for 0 to 1000 Wm

-2

radiation. No voltage

indicates a problem with either the photodiode or the shunt resistor, both of

which are potted in the sensor head and cannot be serviced. Try connecting a

substitute sensor. Obtain a Return Material Authorization (RMA) number

before returning this sensor to Campbell Scientific for repair.

4.5 Wind Speed and Direction

4.5.1 Windset (part #034B-QD)

4.5.1.1 General Description, Windset (part #034B-QD)

The Met One Windset (part #034B-QD) shown in Figure 4.5-1 is an integrated

cup anemometer and wind vane. The anemometer consists of three cups that

sense the wind speed. These cups rotate on a vertical shaft that magnetically

activates a sealed reed switch. The reed switch opens and closes at a rate

proportional to wind speed. The wind direction is sensed by a vane. The vane

drives a 10 K Ohm potentiometer. The wind speed sensor outputs a pulse. The

wind direction sensor outputs a voltage.