Met One Automet Weather Station is a complete self-contained, digital meteorological monitoring system that provides instant access to weather informations.

Sensor Specifications:

Temperature
Range: -50°C to +50°C

Barometric pressure
Resolution: Infinite
Range: 26-32 in. Hg (up to 1500 feet elevation)
Temp operating range: -40°C to +65°C
Temp compensated range: -18°C to +65°C
Accuracy: +/-0.04 in Hg (+/-1.35 mb) or +/-0.125% FS
Sensor: Solid state pressure transducer

Wind speed Range:
0-155 mph (0-69 m/s)
Starting threshold: 0.9 mph (0.4 m/s)
Accuracy: < 22.7 mph: .25mph (0.1 m/s), >22.7 mph: +/- 1.1% of true

Wind direction:
Range: Mechanical 0-360° and Electrical 0-356°
Starting Threshold: 0.9 mph (0.4 m/s)
Accuracy: +/-4°
Damping ratio: .25 Std (.4 to .6 optional)
Resolution: 0.5°

Relative humidity
Sensing element: Thin film capacitor
Range: 0-100% relative humidity
Temperature range: -20°C to +60°C
Response time: < 15 seconds at 68°F of final (with filter)
Accuracy: 0-10% RH +/-3%, 10-90% RH +/-2%, 90-100% RH +/-3%
Temperature coefficient: 0.04% RH/OC

Rainfall:
Accuracy: at 0.5"/hour +/-0.5%, at 1" to 3"/hour +/-1.0%
Switch: Reed type rated at 10 mA, 28VDC

Solar radiation:
Sensor: Silicon solar cell mounted in a cosine corrected miniature head
Spectral response: 400 to 1100 nanometers, 0.4 to 1.1 microns
Sensitivity: 8.0 mV/kwatt meter-2 with 100 Ohm load (varies from sensor to sensor)
Impedance: 100 Ohm load (dependent upon senor sensitivity)
Temp dependence: +/-0.15%/° C, maximum
Linearity: +/-1% from 0 to 3000 watts meter-2
Response time: 10 microseconds (10% to 90%)
Cosine response: Corrected up to 82° incident angle
Azimuth error: < 1% over 360° at 45° elevation

Data and System Specifications:
Power Requirements: 12 VDC +/- 10%
Power Sources: Internal battery pack 12VDC and 120 VAC to 12 VDC power module
Outputs: RS-232 for radio transceiver, RS-232 for dial-up modem (radio & modem share common RS-232 port), RS-232 to remote display
Flexible averaging periods: 1, 5, 15, or 60 minute
Auto-programming: plug in a sensor and the Automet identifies the sensor type, determines its range and writes the programming to record the sensor data.