Specifications

Appendix A. ET107 Maintenance Log
A-2
CLEAN/INSPECT
SOLAR RADIATION SENSOR
(Recommended - Monthly)
Date OK/Comments
CLEAN/INSPECT TEMP/% RH
SENSOR & GILL RADIATION SHIELD
(Recommended - Quarterly)
Date OK/Comments
REPLACE WIND SPEED BEARINGS AND
REED SWITCH
(Recommended - Yearly)
Date OK/Comments
REPLACE RH CHIP (P/N 9598) IN THE
HMP50-ET TEMP/% RH SENSOR
(Recommended - Yearly)
Date OK/Comments
REPLACE DESICCANT BAGS (QTY - 2
OF P/N 4905) INSIDE ENCLOSURE
(Recommended - Yearly)
Date OK/Comments
CALIBRATE SOLAR RADIATION
SENSOR (CS305-ET)
(Recommended - Every 3 Years)
Date OK/Comments