Energy conscious


#1

Hi all,

I was wondering how to monitor the electricity use of the Food computer.
Anyone have a good idea on it?

I am currently leaning toward this option but no idea how reliable it is.
https://openenergymonitor.org/emon/guide
Also not sure if the clip on sensor can do the job…


#2

paging @jake… do you know if this has been explored for the V2 yet?


#3

I recommend just using a Kill a Watt on the main line to the PFC. Simple solutions are often the best.


#4

My company manufactures kWh meters but these are too expensive for this purpose. A 19 dollar meter will probably do fine as a 5-10% deviation is not such a big issue here.
The led lighting might have a negative effect on the power factor though. Make sure the meter incorporates Pf measurement. Another side effect of led drivers could be harmonic distortions. With 1 food computer that should not be an issue but running more on the same breaker could cause unexpected tripping…


#5

They sell a variety of analog voltage and current sensors on amazon that use the 5V logic of an Arduino http://www.amazon.com/Current-Sensor-Module-ACS712-Electronic/dp/B00COD9GO2/ref=sr_1_2?ie=UTF8&qid=1461779960&sr=8-2&keywords=current+sensor. That way you can log the data.

The Kill A Watt only displays the usage but doesn’t log the history. Vernier makes the Watts Up Pro http://www.vernier.com/products/sensors/wu-pro/ but it is fairly expensive.


#6

I went with Arendo energy cost meter

It is kind of a half way on Kill A Watt and Watts Up Pro. Dirt cheap also :slight_smile:

I do like the idea of adding a current sensor to even all the different parts of the Food Computer to determine where the energy goes. That would be a cool addition. Great idea @dan