Equipment and Calibration

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Equipment Entry

Instrument:Forced Diffusion
Manufacture:Forerunner-Eosense
Model No:eosFD
Serial No:FD20180026
Tag No:
Acquisition Date:2019-11-12
Project:Borrowed
Location on 2023-05-09:Bouldin Alfalfa,
Notes: One of five FD chambers loaned to us from Eosense for experiments. This is the second batch or borrowed chambers.

Documents

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History

Rec No.DateLoc FromTitleLoc ToNotes
6292 2023-05-09 Bouldin Corn Forced Diffusion C Moved Bouldin Alfalfa Forced Diffusion A Moved from BC to BA to replace sn FD20160001 which broke. We should have soil CO2 flux data from Whendee's chamber measurements at BC.
6246 2023-03-08 Lab none Installed Bouldin Corn Forced Diffusion C Installed under BC tower to replace sn FD20180067 which got flooded
6198 2023-02-28 Factory none Returned Lab none Received after repair at Eosense: CO2 sensor replaced, relay board replaced, pump replaced, concentration calibration, flux calibration
6199 2022-08-23 Lab none Shipped Factory none Shipped to Eosense on RMA220809 for repair
5444 2021-09-01 Tonzi-SoilCO2 Forced Diffusion Open Removed Lab none Removed from Tonzi-SoilCO2 due to consistent offset between soil and atmosphere chambers. This resulted in small fluxes when they should be pretty much zero. Replaced by sn FD20190027.
5407 2021-08-11 Tonzi-SoilCO2 Forced Diffusion Open Maintenance Tonzi-SoilCO2 Forced Diffusion Open Performance check done. This was a double check of the last check since the CO2 concentrations were so far from ambient. The two chambers were still offset:
Average Flux: 1.3, 0.37 STDEV
Average ATM: 343.7ppm, 41.5C
Average Soil: 408.5ppm, 41.5C
Need to ask Eosense again.
5370 2021-07-13 Tonzi-SoilCO2 Forced Diffusion Open Maintenance Tonzi-SoilCO2 Forced Diffusion Open Performance check done. Referenced to 400ppm. Large offsets need to be double checked:
Average Flux: 0.8, 0.21 STDEV
Average ATM: 107.4ppm, 40.2C
Average Soil: 146.1ppm, 40.3C
4174 2019-11-19 Lab none Installed Tonzi Forced Diffusion Open Installed in the open at the Tonzi soil co2 profiles