Equipment and Calibration History

History for YSI EXO Wiped Cond/Temp 24F100050

Rec No.	Date	Loc From	Title	Loc To	Notes
7146	2025-02-27	Lab none	Calibration	Lab none	Sp Cond (uS/cm),Last cal: 2024-10-22 EXO sn 23H107001 EXO/Sensor Firmware 1.0.86/3.0.5 CellConstant 0.47 ,Standard,PreCal,PostCal,RawValue,Temp Pt1,10000.0 µS/cm, 10035.5 µS/cm, 10000.0 µS/cm, 0.0 µS/cm,17.473 °C Note: Old 10,000 uS/cm solution from 2022 had some dirt in it and read about 200uS/cm higher than the fresh used for the calibration. We discarded the old solution.
7140	2025-02-18	Gilbert Tract Conductivity Sensor Channel	Removed	Lab none	Removed from the GT channel and brought back to the lab for routine calibration
6944	2024-10-23	Lab none	Installed	Gilbert Tract Conductivity Sensor Channel	Installed in the GT channel after calibration
7043	2024-10-22	Lab none	Calibration	Lab none	Sp Cond (uS/cm),Last cal: 2024-07-25 EXO sn 23H107001 EXO/Sensor Firmware 1.0.86/3.0.5 CellConstant 0.47 ,Standard,PreCal,PostCal,RawValue,Temp Pt1,5000.0 µS/cm, 4991.9 µS/cm,5000.0 µS/cm, 0.0 µS/cm,22.658 °C Note: Used USGS standard from Fondriest that expired Aug 2023. It was stored in fridge w/ cap taped and I brought it close to room temperature before calibration.
6928	2024-10-17	Gilbert Tract Conductivity Sensor Channel	Removed	Lab none	Removed from GT channel and brought back to the lab for calibration
6828	2024-08-16	Lab none	Installed	Gilbert Tract Conductivity Sensor Channel	Installed with EXO3s in Gilbert Tract channel, co-located with the ADCP and channel miniDOT
7048	2024-07-25	Lab none	Calibration	Lab none	Sp Cond (uS/cm),Last cal: EXO sn 23H107001 EXO/Sensor Firmware 1.0.86/3.0.5 CellConstant 0.47 ,Standard,PreCal,PostCal,RawValue,Temp Pt1,5000.0 µS/cm,4954.6 µS/cm,5000.0 µS/cm,0.0 µS/cm,22.816 °C Note: First calibration on new sensor. Used USGS standard from Fondriest that expired Aug 2023. It was stored in fridge w/ cap taped and I brought it close to room temperature before calibration.