GEM Captured Data & Resolution
Posted: Fri Aug 10, 2012 10:13 am
With the help of Ben, Paul, and various other forum members from the SEG group. Here are some preliminary power use in my home. Some of the captured data is really surprising to me as I was not aware of certain aspects of power use, duration, and duty cycles.
Also some devices seem to go into different modes which I was not aware of. One key data point is the refrigerator. In the included screen capture you will see a very consistent on / off time and the power it consumes during its operations. There are however two data points which spike up 4 times the normal values for a short period of time.
Could this be a defrost cycle kicking in?
Also, I noticed that some very low level readings were being captured and recorded by the GEM an being displayed by the SEG website. I know the stated CT tolerance is +/- 1 watt depending upon which one is being used.
But, surprisingly the GEM has been able to capture consistent low level power consumption of .33 watts and to 1 watt. I will be using some high end Fluke data loggers to compare if what I see is truly accurate and consistent in what the GEM / SEG is capturing.
Because if its true than all the waiting for the GEM has been well worth it! Regardless here are a few screen shots along with time line, power, and duration of each.
EDIT: When I went back and played back my security video. It was clear the last two blips where from me opening the fridge to get breakfast / lunch. It was the internal light bulb turning on while the fridge was running. This explains the brief power blip during those two events.
The only one not explained is the 400+ power blip . . .
Teken . . .
Also some devices seem to go into different modes which I was not aware of. One key data point is the refrigerator. In the included screen capture you will see a very consistent on / off time and the power it consumes during its operations. There are however two data points which spike up 4 times the normal values for a short period of time.
Could this be a defrost cycle kicking in?
Also, I noticed that some very low level readings were being captured and recorded by the GEM an being displayed by the SEG website. I know the stated CT tolerance is +/- 1 watt depending upon which one is being used.
But, surprisingly the GEM has been able to capture consistent low level power consumption of .33 watts and to 1 watt. I will be using some high end Fluke data loggers to compare if what I see is truly accurate and consistent in what the GEM / SEG is capturing.
Because if its true than all the waiting for the GEM has been well worth it! Regardless here are a few screen shots along with time line, power, and duration of each.
EDIT: When I went back and played back my security video. It was clear the last two blips where from me opening the fridge to get breakfast / lunch. It was the internal light bulb turning on while the fridge was running. This explains the brief power blip during those two events.
The only one not explained is the 400+ power blip . . .
Teken . . .