Equipment and Calibration History

History for Campbell Sci. CR23X 2299

Rec No.	Date	Loc From	Title	Loc To	Notes
5966	2022-08-24	Lab none	Installed	Hill Slough none	Installed with a solar panel and lithium battery at the Hill Slough channel. This datalogger will collect data from water sensors installed in the channel.
5833	2022-05-10	Vaira Data Logger Soil CO2	Removed	Lab none	Removed with the last of the soil co2 system because data not good and to reduce power load.
5041	2020-12-18	Vaira Data Logger Soil CO2	Location	Vaira Data Logger Soil CO2	Confirmed serial number and location
5044	2020-11-11	Lab none	Installed	Vaira Data Logger Soil CO2	Installed at Vaira in the Soil CO2 system. The 0-5V range on the 23x avoids the problem of needing voltage dividers.
2990	2017-08-17	Vaira Data Logger Met	Removed	Lab none	Removed from Vaira where it was collecting met data. It was replaced by a CR1000.
2465	2007-07-24	Factory	Returned	Lab none	Returned from repair at Campbell on RMA 4887: "Verified that it would not communicate when received. Unit had several low 12V errors and corrupt intermediate location which caused the communication problems. Most likely caused by lightning strike or repeated low supply problems. Updated Operating System to latest revision 19. calibrated with documentation, temperature tested and given a bench test."