Equipment and Calibration History

History for Apogee SI-121 1964

Rec No.	Date	Loc From	Title	Loc To	Notes
6878	2024-06-04	Lab none	Installed	Tonzi Infrared Temperature Tree Crown	Reinstalled at the little tree northeast of the Tower at Tonzi after having been removed to repair massive cable damage from cows. This sensor is pointed at the tree crown.
6694	2024-04-30	Lab none	Repair	Lab none	The cows had chewed the cable very nearly down to the nub. I had to cut some of the strain relief off to get enough conductor to splice. I added a length of cable and then spliced the end on that has a completion resistor for the thermmistor half bridge. So two splices. It compared withing 0.5C with the other IRT in the window - as good as you get without a fancier setup.
6693	2024-04-10	Tonzi Infrared Temperature Grass A	Removed	Lab none	Removed from the IRT tripod at Tonzi where it was pointed at the ground. The cows ate its cable.
1807	2015-05-06	Lab none	Installed	Tonzi Infrared Temperature Grass A	Installed at Tonzi to the east just north of the road. This sensor is point down on a patch of ground cleared of grass.