Submitted by TrystanLea on Tue, 02/02/2010 - 20:42.
Hey Steven, have you calibrated the energy monitor? Make a table of rms current values from the energy monitor and their corresponding rms current values from the fluke meter. Then create a scatter plot your spreadsheet program with the energy monitor values on the x-axis and the fluke values on the y-axis. Then plot a line of best fit and get the equation.
The equation of the line is of the form y = mx + c. Find the line in the arduino sketch that sets factorA and multiply factorA by m giving you a new value. Add c to Ioffset.
Let me know how that goes
Hey Steven, have you
Hey Steven, have you calibrated the energy monitor? Make a table of rms current values from the energy monitor and their corresponding rms current values from the fluke meter. Then create a scatter plot your spreadsheet program with the energy monitor values on the x-axis and the fluke values on the y-axis. Then plot a line of best fit and get the equation.
The equation of the line is of the form y = mx + c. Find the line in the arduino sketch that sets factorA and multiply factorA by m giving you a new value. Add c to Ioffset.
Let me know how that goes