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Light on/off data loggers recording more states than are actually occurring

If you are monitoring fluorescent lights, part of what you are seeing may be due to a fairly common attribute of fluorescent lights. When the filaments of a fluorescent lamp and the gas inside the lamp are not up to the normal running temperature (normally the first few minutes after startup), they are likely to flicker a bit.

Choosing an Occupancy and Light On/Off Data Logger – 5 Important Considerations

Learn how to select the right logger for identifying ideal locations in your building where permanent changes in lighting could result in cost savings up to 80%.

How to analyze data from the HOBO UX90-005 and 006 data loggers

Learn how to plot, analyze, and understand data from the HOBO UX90-005 and 006 light & occupancy data loggers

Sample Data - Light & Occupancy Data from HOBO UX90-005 & UX90-006 Loggers

Attached are two screenshots depicting Light On/Off and Occupancy data recorded by a HOBO UX90-005 logger. (Data from a UX90-006 would be depicted the same way.)

Data Logger Basics for Building Performance Monitoring

Learn the basics about monitoring your building's energy consumption, heating, air conditioning, lighting, and more!