Equipment and Calibration History

History for Sensorex DO6400/T DO-07

Rec No.	Date	Loc From	Title	Loc To	Notes
1196	2014-01-28	Lab none	Disposed	Lab none	This probe is no longer working - probably due to corrosion.
1172	2014-01-10	Mayberry DO Sensor B	Removed	Lab none	The probe was reading high and seemed corroded so it was removed to be serviced in the lab.
956	2013-03-14	Lab none	Installed	Mayberry DO Sensor B	Reinstalled lower DO probe at the Tule tower
944	2013-03-12	Lab none	Calibration	Lab none	DO-07 was calibrated in the lab: M = 8.73/36.8 (mg/L)/mV (aka ppm/mV) @ temp = 21.5 C and press.= 101.5 Kpa
942	2013-03-12	Lab none	Maintenance	Lab none	Replaced membrane. Previous one appeared to be torn. readings seem much better now.
943	2013-02-28	Lab none	Removed	Lab none	Removed for testing in lab since when holding it out of water at Mayberry the readings were decreasing instead of going back to atmospheric.
940	2013-02-28	Mayberry DO Sensor B	Removed	Lab none	Removed for testing in lab since when holding it out of water at Mayberry the readings were decreasing instead of going back to atmospheric.
804	2012-09-13	Lab none	Installed	Mayberry DO Sensor B	DO-07 was installed in the deep open water position at Mayberry. It is about 45cm below the surface.