Hi guys,

I am monitoring output from 2 inverters (connected to solar systems) and household consumption across 2 phases. The production measured from the inverters does not match what is recorded on the segmeter.

I was wondering if anyone had some tips for calibrating the sensors?

Hey Max,
What's the difference you are noticing?
Perhaps the answer is to determine the difference after a period of days then calculate an adjustment calibration factor and apply this to each of your solar data streams for instantaneous power and aggregated energy?
Sam.

Thanks Sam,

The difference is about 20%, which should be able to overcome with a calibration factor, but what's the best way to *accurately* calculate this factor? 

for example, do i switch off everything and run a 100W light bulb? But what if 100W globes actually 95W globes, this will throw off my factor by 5%. The logical choice for consumption is the meter (as this is what i will end up having to pay), but I don't think i can use the meter as it gives me the net after the solar. Similar situation for the solar, i can't necessarily trust the output displayed on the inverters as i am testing them.

So, how have other people calibrated their sensors?