Campbell Scientific ET107 Evapotranspiration Monitoring Station - Manual (Page 73)

ET107 Weather Station
VisualWeather version 3.0 or higher is designed to work with the ET107
station and can be used to create programs, monitor present conditions, collect
data, and create reports and graphs. VisualWeather is designed to be a very
user friendly program. No datalogger experience is needed to use it.
VisualWeather will communicate with a direct connect, short-haul modem, RF
radio, or phone modem station. Call Campbell Scientific for pricing.
LoggerNet is a very powerful versatile package that requires some experience
with datalogger programming. LoggerNet is used to create custom
programming for the station as well as handling large networks of stations.
LoggerNet is not as easy to use as VisualWeather. Call Campbell Scientific for
pricing.
4. Maintenance, Troubleshooting, and Schematics
4.1 Maintenance
Proper maintenance of the ET107’s 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
station. More difficult maintenance such as sensor calibration, sensor
performance testing (i.e., bearing torque), and sensor component replacement,
generally requires a skilled technician, or that the instrument be sent to
Campbell Scientific or the manufacturer.
A station log should be maintained for each weather station that includes serial
numbers, dates that the site was visited, and maintenance that was performed.
4.1.1 Pole
Periodically check the tower for structural damage, proper alignment, and for
level/plumb.
4.1.2 Power Supply
4.1.2.1 Batteries
Rechargeable power supplies should be connected to an AC transformer or
unregulated solar panel at all times. The PS100 charge indicating light should
be “ON” when voltage to the charging circuitry is present. The charge
indicating light runs independent of the power switch. Be aware of battery
voltage that consistently decreases over time, which indicates a failure in the
charging circuitry. Short Cut and VisualWeather automatically program the
weather station to measure battery voltage.
4.1.2.2 Solar Panel
An occasional cleaning of the glass on the solar panel will improve its
efficiency. Use warm mildly soapy water and a clean cloth. Rinse with clean
water.
4.1.3 Desiccant
Humidity is monitored inside the ET107’s enclosure using the Elan HM2000
(pn 10070) RH sensor that is incorporated in the enclosure. Change the
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