We use these Xitron power analyzers for accurate measurements of an appliance’ electrical performance. These power analyzers are quite sophisticated and allow us to measure power consumption, instantaneous power, power factor, harmonics, and many more electrical parameters.
We also interface these to a computer to allow unlimited datalogging capability as well as flexible automated control under a custom-developed control software. We currently use these for our Refrigerator performance testing to assure our clients of accurate results everytime.