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Guy explains how he used a HOBO data logger to monitor the efficiency of a domestic solar hot water heating system.
To measure Direct Current using the HOBO RX3000 and the T-VER-H971 transducer, see attachment.
Attached is a screenshot of a data file that was generated by a HOBO UX120-017 logger that was connected to a T-VER-E50B2 Power and Energy Meter.
Attached is a screenshot of a HOBOware Pro project file that depicts a long-term (17-month) study of outdoor temperature data vs residential energy consumption.