Equipment and Calibration History

History for Apogee SI-121 1282

Rec No.	Date	Loc From	Title	Loc To	Notes
1789	2015-04-20	Factory	Disposed	Disposed	Apogee says: Upon inspection it appears that the thermopile detector has some marks on the FOV glass. This is most likely what is causing the sensors to read so far off from your reference point. I can attempt to calibrate out those marks on the sensor but I am unsure if the uncertainty will be within the 0.1°C specification. The other option is for you to trade in these units for new one’s at a substantial 40% discount, bringing the price to 3 per sensor. We decided to trade the sensor in for a new one.
1788	2015-04-13	Lab none	Shipped	Factory	A laboratory check showed bad readings from the target thermopile. The readings fluctuated wildly and sometimes out of range. Sent to Apogee on RMA 21085
1758	2015-03-24	Mayberry Infrared Temperature Water	Removed	Lab none	Removed from the Mayberry tower for use by Ana at Tonzi. This sensor was pointing at the water.
347	2011-03-01	Lab none	Installed	Mayberry Infrared Temperature Water	Installed on the Mayberry Tule Tower facing open water.
3811	2010-12-09	Tonzi	Removed	Lab none	Removed from Tonzi with the end of the surface temperature experiment.