Equipment and Calibration History

History for Forerunner-Eosense eosFD FD20190028

Rec No.DateLoc FromTitleLoc ToNotes
6262 2022-08-24 Factory none Disposed Disposed none This unit was originally borrowed from Eosense. Since this model is no longer in production they can not repair it ahead of other purchased units so we will not be getting it back.
6261 2022-08-23 Lab none Shipped Factory none Sent to Eosense for evaluation and repair.
5777 2021-10-26 Hill Slough Forced Diffusion A Removed Lab none Removed after being underwater when tidal flooding began. The pump was still running.
5378 2021-07-20 Hill Slough Forced Diffusion A Maintenance Hill Slough Forced Diffusion A Performance check done. Referenced reset to 400ppm.
Average Flux: -0.0, 0.03 STDEV
Average ATM: 172.2ppm, 34.6C
Average Soil: 171.6ppm, 34.5C
5223 2021-03-25 Lab none Installed Hill Slough Forced Diffusion A Installed at Hill Slough on the ground to the southwest of the Tower platform.
5217 2021-03-17 Vaira Forced Diffusion West Removed Lab none Removed from Vaira West for possible use at Hill Slough. Replaced by sn FD20180068.
5043 2020-12-18 Lab none Installed Vaira Forced Diffusion West Installed at Vaira West to replace sn FD20200001 for test of high temp readings in the lab.
5037 2020-12-17 Factory none Returned Lab none Returned from Eosense after repair. They replaced relay board 1 and 2 and did a Flux calibration on 2020-12-01
4865 2020-10-08 Lab none Shipped Factory none Sent to Eosense for inspection and repair
4864 2020-09-28 Lab none Tested Lab none No pump sounds (orange light inside comes on) and both CO2 channels read the same. The flux is zero. Probably dead pump. I'm tempted to take this one apart and look for a loose wire but it's less than a year old and I don't want to void any warranty.
4779 2020-09-23 Bouldin Alfalfa Forced Diffusion B Removed Lab none Removed from BA and brought back to the lab for testing because of noisy data
4420 2020-04-17 Lab none Installed Bouldin Alfalfa Forced Diffusion B Installed with a collar at BA under the tower (SE corner) over bare soil.