Week 6

Hi everyone,

I was able to contact Tom Barraclough this weekend and after conversing he sent me an attachment of an excel spreadsheet with equations in them for calculating the amount of ferrous particles in ppm for a sample. The equations used in the excel spreadsheet are hypothetical, meaning that if the sample tested is known to have only ferrous particles in it, then the equations will give the ferrous particle concentration in the sample tested. How the equations work is that you copy and paste the particle imaging count results into the excel spreadsheet and the equations saved in the excel spreadsheet will calculate the ferrous particle concentration in ppm. Knowing this, I realized that I could input the particle counts for the S-1000 test dust reference samples because they are known to only contain ferrous particles. I put the results in the excel spreadsheet and graphed the results. The Vertical axis represents the ferrous particle concentration in ppm and the horizontal axis is the reference samples containing S-1000 iron test dust. The blue bar is the actual iron ppm that we calculated using our calibration sheet. The orange bar is the calculated iron results from the excel sheet provided by Tom for the reference samples. The black bar is the results of ferrous concentration in ppm that the Q230 counted for the reference samples. The actual and calculated iron ppm are relatively close to each other, but the results that the Q230 yields are not close to the actual and calculated.