Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
06/29/2012 | 1500 | 06/20/2013 | 1100 | Does not affect quality |
Subject: | PVC/AETH/NEPHELOMETER/PASS/PSAP/S1 - Incorrect impactor state |
DataStreams: | pvcaospsap3wS1.a1, pvcaosnephwetS1.b1, pvcaosnephdryS1.b1, pvcaospass3wS1.a1, pvcaosnephwetS1.a1, pvcaosaethS1.a1, pvcaospass3wauxS1.a1, pvcaospsap3wS1.b1, pvcaosaethS1.00, pvcaosnephdryS1.a1 |
Description: | The reported state of the impactor is reversed so that when the data says the state is 1um it is actually 10um and when it says 10um it is actually 1um. |
Suggestions: | There are two options to work around this problem. 1) Since all the data is reversed it can be reversed back so that it will then be correct. 2) Another way to correct the impactor data is use the dry nephelometer pressure. The dry nephelometer varies between two pressures. The nephelometer pressure is higher when the impactor is 10um and lower when it is 1um. |
Measurements: | pvcaospsap3wS1.a1: more
pvcaosnephdryS1.a1: more pvcaospsap3wS1.b1: more pvcaosaethS1.a1: more pvcaosaethS1.00: more pvcaosnephdryS1.b1: more pvcaospass3wauxS1.a1: more pvcaosnephwetS1.a1: more pvcaosnephwetS1.b1: more pvcaospass3wS1.a1: more |