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Electronic data acquisition system for the energy balance/Bowen ratio measurement of evaporation

University of British Columbia

A system for the energy balance/Bowen ratio measurement of evaporation was designed and tested. The system produces eight channels of integrated meteorological data for evaporation calculation. The various voltages required to operate the meteorological sensors are produced internally by a bank of regulated power supplies. Control signals are generated by a quartz crystal -clock. The data in a selected channel and the time of day are displayed on the front panel of the data logger. All eight channels of data and the time are printed on a paper tape every 15 or 30 minutes as desired. The output circuitry was designed to be compatible with microprocessor components. The data logger is contained in a 60 cm x 50 cm x 40 cm metal cabinet and is powered by 110 VAC. The laboratory and field tests of the system were successful.

Text

2010-02-09

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http://hdl.handle.net/2429/19869

Soil Science

University of British Columbia

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