Equipment and Calibration History

History for Pro-Oceanus MiniCH4 38-572-25

Rec No.	Date	Loc From	Title	Loc To	Notes
7161	2025-03-13	Lab none	Tested	Lab none	I ran this sensor in continuous mode for 10s of minutes and it never stopped reading -10 for CH4. I removed the filter and didn't seen any obvious signs in water getting in. Need to contact ProOcenanus.
7157	2025-03-07	Mayberry CH4 Probe	Removed	Lab none	This sensor had fallen out of the cable ties and its sensor may have been in the sediment. The CH4 readings steadily rose past 4% but it was dropping out before climbing. Removed for testing.
7152	2025-01-15	Lab none	Installed	Mayberry CH4 Probe	Installed on the northeast scaffolding foot at a fixed height. Interface box in the data logger enclosure.