Equipment and Calibration

Equipment Entry

Instrument:	CH4 Probe
Manufacture:	Pro-Oceanus
Model No:	MiniCH4
Serial No:	38-576-25
Tag No:
Acquisition Date:	2025-01-03
Project:	Borrowed
Location on 2025-04-24:	Bouldin Alfalfa,
Notes:	Borrowed from Sheel Bansal at the USGS after factory re-calibration at Pro-Oceanus. 5 probes, 3 interface boxes (2 long cable, 1 short), 2 Sea-Bird pumps, 4 external battery cases, 8 spare battery packs (8 D-cell), 4 short water proof cables, 4 wall warts, 2 USB-serial adapters, 3 serial cables, bag of port plugs.

No documents found

Rec No.	Date	Loc From	Title	Loc To	Notes
7200	2025-04-24	Lab none	Tested	Lab none	I tested this sensor in the lab. The serial interface and temperature seem fine but the CH4 is reading -10.00. I downloaded all the data and erased the internal data file. I will try to get advice from Pro-Oceanus.
7197	2025-04-16	Mayberry CH4 Probe	Removed	Lab none	Removed from Mayberry due to reading -10.00 again. No problems with the mounting this time.
7171	2025-03-26	Lab none	Installed	Mayberry CH4 Probe	I reinstalled the miniCH4 on the northeast leg of the scaffolding.
7160	2025-03-13	Lab none	Tested	Lab none	Tested in the Lab. Seems okay. The CH4 was reading near zero 0.02% and I could make it climb by breathing into the filter.
7158	2025-03-07	Gilbert Tract CH4 Probe Channel	Removed	Lab none	This one started reading -10% CH4 for no apparent reason. It was removed for testing and replaced by sn 38-574-25
7131	2025-02-18	Lab none	Installed	Gilbert Tract CH4 Probe Channel	Installed in the GT channel, co-located with the ADCP, EXO, and channel miniDOT. It has a cable running up the ADCP railing to the enclosure for power/comms.