RAWS-P Remote Automated Weather Station
4.2 Rain Gage
4.2.1 General Description, Rain Gage (part #TE525-LQ)
The Texas Electronics Rain Gage (part #TE525-LQ) is an adaptation of a
Weather Bureau tipping bucket rain gage. The rain gage has a 6 inch collector.
The rain gage sensor output has a switch closure for each bucket tip. Level the
rain gage.
4.2.2 Wiring, Rain Gage (part #TE525-LQ)
The rain gage is connected to the RAWS connector panel “PRECIP” connector
COLOR CODED BLUE. This sensor is internally wired from the RAWS
connector panel to the CR1000 datalogger.
Connector Panel “PRECIP” connector COLOR CODED BLUE
Connector Pin A Tipping Bucket
to CR1000 C6
Connector Pin B 5V
to CR1000 5V
Connector Pin C Ground
to CR1000 Ground
4.2.3 Troubleshooting, Rain Gage (part #TE525-LQ)
Check the sensor cable. Disconnect the connector and use a DVM to check the
resistance between Pin A (sensor signal) and Pin C (sensor ground). The
resistance should read as an open circuit until you move the rain gage tipping
mechanism where the magnet swings past the reed relay. Try connecting a
substitute sensor. Obtain a Return Material Authorization (RMA) number
before returning this sensor to Campbell Scientific for repair.
Consult the TE525-L manual for more information.
NOTE
4.3 Solar Radiation
4.3.1 General Description, Pyranometer (part #CS300-LQ)
The Apogee Pyranometer (part #CS300-LQ) measures incoming solar radiation
with a silicon photovoltaic detector mounted in a cosine-corrected head. The
detector outputs current; a shunt resistor in the sensor converts the signal from
current to voltage. During the night the CS300-LQ may read slightly negative
incoming solar radiation. The negative signal is caused by RF noise.
4.3.2 Wiring, Pyranometer (part #CS300-LQ)
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
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
nd
SDI-12
sensor)
Connector Pin F SDI-12 12V
to CR1000 12V*
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