Power Data Comparison Sheet

[KickrLin]

@mcneese.chad

I am open to reformatting and this is already on the 3rd iteration. I don’t know the best way to show the data in a non-confusing way yet, even for a single value.

I too was thinking of how to best display this information, but have come up with nothing.

@mcneese.chad

The challenge is that it’s not a simple addition of the % tolerances to know if the split is good or bad (within acceptable range combinations).

But it is this simple. You are comparing the two values from two different meters, neither of which is a known true value. To do so we use the percentage difference between the two numbers and see if that %diff falls within the acceptable range.

@mcneese.chad

Each tolerance must be applied to the data from the related device, then compare the results.

I believe you are saying to do the following: Using 200W 3% and 185W 1.5%. Let’s say the real value is between the two, one meter reading high and the other low. So, 200W is +3% (your max) and 185W is -1.5% (your min). This yields 194W and 188W. The % diff here is 3.14% which would be within spec.

The problem with this is you are fudging the numbers before you start. You do not know if a meter is reading higher/lower and cannot arbitrarily make the assumption. Both values are experimental values. There is no known true value in this scenario.