Onset HOBO oxygen logger measures oxygen concentration with the HOBO U26 Dissolved Oxygen Data Logger. directly from the photographs.

Cap activated Sept. 21, 2021. Logging every 15 min. Will stop April 22, 2022.

The sensor mooring pole Base sits about 20 cm above the anchor. The mooring was installed in 4.9 m of water.

A three-optical-sensor, user-defined instrument that may carry any combination of single-wavelength fluorometers or scattering meters. The fluorometers can be configured (with typical sensitivities) for chlorophyll (470/695 nm, sensitivity 0.015-0.025 ug/l), FDOM (370/460 nm, sensitivity 0.184 ppb), phycocyanin (630/680 nm, 0.086 ppb), phycoerythrin (520/595 nm, sensitivity 0.086 ppb), uranine (470/530 nm, sensitivity 0.073 ppb) or rhodamine (520/595 nm, 0.086 ppb). The scattering meter can typically measure optical scattering at blue, green or red wavelengths (412, 470, 532, 650, 700 and 880 nm, sensitivity 0.002-0.003 m-1).

ACT-HR Compact-CT Conductivity and Temperature sensor used on Manitoba Great Lakes Moorings. Calibrated in Dec. 2020