Equipment and Calibration History

History for Licor LI-800 AKC-0479

Rec No.	Date	Loc From	Title	Loc To	Notes
1805	2015-05-04	Loaned	Returned	Lab none	Returned by Pawel Misztal who said it work well for his microbial cultures.
1732	2015-02-27	Lab none	Loaned	Loaned	Loaned to Pawel Misztal in Allen Goldstein's lab for three weeks. Power/data connector, cleaning kit, null modem and tube fittings included.
1731	2015-02-27	Lab none	Calibration	Lab none	Calibrated with zero air and 421.22ppm CO2 God bottle. Zero offset = 53.2ppm, span offset 0.4ppm
1733	2015-02-11	Lab none	Maintenance	Lab none	Installed the cell from the LI-820. This cell might have a bad spot on its wall, but it seemed to clean up okay and was giving stable readings.
1017	2013-05-08	Tonzi	Removed	Lab none	This Li800 was removed from the CO2 profile system on the Tonzi Tower where is was often drifting out of range and railing.
493	2012-01-03	Lab none	Tested	Lab none	Failed in the field with signal pegged at max. In the lab, I confirmed the failure, cleaned the cell, confirmed the source was bright and flashing. Still pegged at max, ran zero air and zeroed but could not span with 436ppm CO2 (error box displayed "Span failed"). No resonable response to differnet cal gases. Reset from configure dialog box with no improvement. Got RMA from Licor.
492	2011-12-18	Tonzi	Removed	Lab none	Removed from the co2 profile system on the Tonzi Tower because it reading was pegged at max (1000ppm). TC wires cut.
426	2011-10-17	Lab none	Maintenance	Lab none	I cleaned the bench. There was one black spec inside the bench and another on the source end. After cleaning, I was able to calibrate the IRGA. Press = 1003mBar, Temp = 52.6C, Heater = ON, Filter = 0sec, span = 1000ppm. Several cycles of zero air and span CO2 410.49 seemed to bring it back into range.
425	2011-10-13	Tonzi	Removed	Lab none	Removed from the CO2 profiles system because of strange values and would not calibrate.