There are almost no records in ilog or Elog or wiki-40 about "Weather Station", so this wiki-40 page should serve as an introduction to what is the weather station and what are current problems with it.

Purpose of Weather Station: it allows to have information about inside/outside temperature, humidity, pressure,... If everything works correctly, this information should be available in two places. Firstly, this information is indicated on the screen of the 'Weather Monitor' (a small black box hanging on the north wall of the laser interferometer room), and secondly, the same information should be available on MEDM screens of the control UNIX computers.

Currently (as of 1st of April 2008) the only information that seems to be reasonable is the indication of the inside temperature on the screen of 'Weather Monitor'. This means that there are two large separate problems with the weather station. Problem 1: No data for outside temperature, pressure, humidity is available even on the screen of 'Weather Monitor', this means that most probably the outside sensors are dead. Problem 2: No indications on the MEDM 'Checklist' screen on UNIX control computers. This means that processor 'c1pem1' (located in the laser interferometer room near other processors in a DAQ rack near the middle of Y-arm) that should communicate with control UNIX computers does not do his job.

What is 'Weather Station?

Weather station consists of commercially available 'Weather Monitor' (made by Davis company), temperature/pressure/humidity sensors that are located outside of the building (on the roof), junction box that allows the signals from the roof outside sensors to be seen on the 'Weather Monitor' screen. Using the commercially available 'Weatherlink' electronic device, one can transfer signals from 'Weather Monitor' to the UNIX control computers.

TO BE CONTINUED

attachment:Weath_Monitor.JPG