Market Survey Lighting Loggers And Occupancy Loggers Guide

Six firms in the United States market lighting loggers, a class of devices that features runtime and time-of-use lighting loggers and occupancy loggers. Runtime loggers are the best and least costly loggers, measuring how lengthy lights remain off or on -- knowledge useful for assessing power savings of lighting effectivity upgrades. Time-of-use loggers, manufactured by only one company, are extra subtle and versatile, as well as dearer. occupancy light switch document when and for how long lights are turned off and on--data useful for power savings assessments and billing impression studies for buildings with time-of-use charges. Occupancy loggers are marketed by three companies in the United States. These loggers measure how long lights remain on when no one is in the room. Such knowledge is useful for determining potential financial savings from occupancy sensors. Lighting loggers are most cost-efficient when data is needed on lighting usage in particular person spaces. Other methods can be more economical when overall lighting usage for a constructing or a whole flooring is all that is needed. The simplicity of the loggers makes them accessible to anyone occupied with assessing lighting savings, together with end users, utilities, ESCOs, and consultants.