Equipment and Calibration History

History for Campbell Sci. CS451 70011229

Rec No.	Date	Loc From	Title	Loc To	Notes
4662	2020-08-05	Lab none	Installed	East End Water Level	Installed at EE to replace sn 20010375, which was brought back to the lab for repair. From field note calculations, sensor was installed 22cm below ground level. Top of well to ground level= 41 cm Top of well to sensor = 63 cm Top of well to bottom of well inside pipe = 66 cm (dry at bottom of well)
3984	2018-12-10	Lab none	Tested	Lab none	Tested in both air and water in the lab, but saw diurnal fluctuations of only 0.1 cm, not the 5-6 cm we saw in the field. See RT report "Pressure transducer comparison 12-2018."
3598	2018-07-12	Mayberry Water Level	Removed	Lab none	Removed from MB because it had diurnal fluctuations, which seem suspect. It was replaced by sn 70011236.
2328	2016-06-24	Lab none	Installed	Mayberry Water Level	Installed on the Mayberry tower to replace the old sensor that has been acting flakey.
1967	2015-09-04	Factory	Calibration	Factory	Initial factory calibration. Recommended interval: 2 years of service.