Equipment and Calibration

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Equipment Entry

Instrument: Fluorometer Manufacture: YSI Model No: EXO fDOM Serial No: 21K102591 Tag No: Acquisition Date: 2022-11-01 Project: Borrowed Location on 2023-02-15: Returned, Notes: Borrowed from Adina Paytan at UCSC for use at Gilbert Tract while the USGS EXO is out for repairs. Especially dire since a 24hr tidal water measurement campaign is scheduled from 11/8 - 11/9. Bare fluorescent dissolved organic matter sensor for EXO Sonde. 0 to 300 ppb Quinine Sulfate equivalent (QSE) measurement range 0.01 ppb QSE resolution T63<2 sec response time

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History

Rec No.	Date	Loc From	Title	Loc To	Notes
6191	2023-02-15	Lab none	Returned	Returned none	Returned to Adina during our Elkhorn Slough visit
6195	2023-01-25	Gilbert Tract none	Removed	Lab none	USGS removed this EXO from the Gilbert Tract channel and stashed it on the bank. Joe retrieved it from the site at the end of the day and brought it back to the lab.
6062	2022-11-03	Gilbert Tract	Calibration	Gilbert Tract	fDOM (QSU and RFU), Last cal: 10/31/2022 4:14:35 PM EXO sn 22C100485 EXO/Sensor Firmware: 1.0.86/3.0.0 UCSC sensors sn 591 and sn 592 were really off even though calibrated recently. Will accept calibration and just run them at the GT channel for a week to see if they drift. ,Standard,PreCal,PostCal,RawValue,Temp Pt1,0.00 QSU,0.51 QSU,0.01 QSU,0.00 QSU,16.967 °C Pt2,316.50 QSU,219.51 QSU,316.49 QSU,0.00 QSU,10.855 °C ,Standard,PreCal,PostCal,RawValue,Temp Pt1,0.00 RFU,0.12 RFU,0.00 RFU,0.00 RFU,15.878 °C Pt2,105.50 RFU,74.86 RFU,105.50 RFU,0.00 RFU,11.257 °C