Equipment and Calibration

Equipment Entry

Instrument:	CO2 Probe
Manufacture:	Forerunner-Eosense
Model No:	GP-001
Serial No:	GP20140021
Tag No:
Acquisition Date:	2014-09-25
Project:	USDA Rice
Location on 2017-05-31:	Disposed,
Notes:	0 to 4% range. These probes have an extra 20% bonus to their CO2 analog range. So a 0-2% probe will have a 0-2.4% analog output range.

Rec No.	Date	Loc From	Title	Loc To	Notes
2806	2017-05-31	Factory	Disposed	Disposed	Disposed of at Eosense factory because it was not repairable
2667	2017-03-20	Lab none	Shipped	Factory	Sent to Eosense for evaluation. Bad readings after a total 276 days in use.
2640	2017-02-22	Lab none	Calibration	Lab none	y = 13.36*x The probe was tested against a new probe with decreasing CO2 from 2.4% to zero. This probe read significantly lower than the standard probe and showed some lag at higher change rates.
2120	2015-12-08	East End CO2 probe	Removed	Lab none	This 4% CO2 probe was removed from East End. It was replaced by an 8% probe sn GP20150109
1902	2015-06-25	Lab none	Installed	East End CO2 probe	Installed this 4% probe at East End due to replaced 2% probe sn GP20140011.
1672	2015-01-20	West Pond CO2 Probe B	Removed	Lab none	Removed from West Pond. Replaced by sn GP20140022 that now has a copper mesh.
1580	2014-10-02	Lab none	Installed	West Pond CO2 Probe B	Installed at West Pond to replace the current 2% probe sn GP20140009.