Hello everybody, I am trying to assembly the Ac Monitor, but I am having some problems. I think I have assembled it correctly but now I was trying to calibrate it but I am just receiving random numbers in my serial port.. I am using the basicSketchWCal to calibrate it.
Does anyone know what may be the problem. Thank you in advance.
(I posted also in general discussion, sorry for double post)
Re: Calibration
Try the new emonLib library: https://github.com/openenergymonitor/EmonLib. You will still need to calibrate for your component values.
We have a page here that lists suggested calibration values for the emonTx AC-AC adapters: http://openenergymonitor.org/emon/buildingblocks/different-acac-power-adapters
We are currently in the process of improving the layout of the documentation on this site. If you can't find anyting please try the new 'building blocks section': http://openenergymonitor.org/emon/buildingblocks. This section will in due course replace input/output modules and builds.
Re: Calibration
I am using the basicSketch calibration file to calibrate my values of phaseCal, Ical and Vcal. The problem is that I am trying to calibrate my phasecal but I can't and I don't know whats happening. I started by using the values that you refer like 2.3 but it seems like I am just receiving random numbers.
The power factor is supposed to be 1 when there are any devices connect at the grid and then is supposed to go to a number around 0.85 or something. But the problem is that I cannot even measure 1 and when I connect a device and turn it on it seems to be not so effective in changing the values of the power factor. I really don't know what may be happening.
Any clue?
Re: Calibration
Have you calibrated the Vcal and Ical? Try calibrating these first. You will need a plug in monitor on an extension cable to compare. The CT must be clipped round either the netral or live wire, not both.
Calibrating phaseCal can be tricky, its often a bit of trail and error! A full resistive load such as an electric heater can be used to give a PF of 1.
Calibration should be done with a load of a few Kw at least.
What is your setup? I take it your not using the emonTx? What component values are you using?
Re: Calibration