Description: | Beginning on 19 June 1997, the set screw holding one of the AEM sprockets
to the drive motor became stripped, preventing the aspirator units from
exchanging every time. The problem was intermittent until 24 June when
site operations personnel determined that a new sprocket (therefore a
replacement AEM) was needed. The AEM was therefore left in the position
such that the right aspirator was in the bottom position continuously, with
home signals indicating values near -1. The AEM was replaced on 8 July
1997.
For most of the time period above, home signals, bowen, e, h, and all
thermocouple and probe tmperatures, probe relative humidities, and vapor
pressures do not reflect a switching AEM. However, temperatures, RH and
vapor pressures are accurate for their height. Obviously, bowen, e, and h
are incorrect. |