Week 4 Day 19

We took a day off from testing today and went through all of our data to check the relationship between our prototype data and the more expensive GrayWolf unit.  All of the data seems to follow the same trends, with the only variation being the sensitivity of the GrayWolf unit.  For example, when there is a change in VOC concentration due to an odorous gas our prototype jumps to 250 ppm while the GrayWolf jumps to 1200 ppm.  This means that to use this as a warning system, we will have to determine specific thresholds for our unit.


This afternoon we attended a seminar from David Hunter, who is with Denton's Water Quality department.  He discussed different pollutants that you would check for in a watershed, along with different sensors and their applications.


Tomorrow will be lesson plan development day, so hopefully we can get a lesson plan finished up tomorrow.