Weather Instruments

The weather instruments are installed on the building housing the Guin Libary at the Hatfield Marine Science Center in Newport, Oregon (South Bay area). The station consists of various instuments and a software package to display and archive the readings. The Weather Monior II system was purchased from Davis Instruments. The Network server (Secure Network Interface) was purchased from Dawning Technologies. The anemometer is mounted on a 20 foot steel pipe attached to the second story of the Guin Library building. The mast is barely visible just above the SW peak in the roof. It has the best exposure to the winds coming from the SW through the NW quadrant.

Sensors

A detailed picture of the anemometer.	The temperature-humidity sensor is mounted under the eve on a North facing rafter.	The tipping bucket style rain guage is mounted on the roof.

Communications

All attached sensors are fed into a controlling monitor mounted inside the building and out of the weather. This monitor also contains a pressure transducer that indicates the barometric pressure. Inside the base of the monitor is a weatherlink module that contains memory and a battery. This module translates the sensor outputs into a signal that a personal computer can understand. This signal is then sent over an RS-232 circuit to the SNI.

The Secure Network Interface (SNI) communicates with the weatherlink module. It interrogates the module every 15 seconds. The SNI also creates the web pages for the current weather and monthly weather pages. The SNI also FTPs the data to another server for archival purposes. The SNI is controlled by an Extented Basic Program. This "MicroNode" Server measures about 6 inches square and 1.5 inches high. More details about how the SNI works are available.

Connections