Sensors - Vela

The Vela features a durable aluminum/stainless steel wind direction and speed sensor using a three-cup anemometer for accuracy, sensitivity, and durability and a lightweight vain tail for low starting threshold.

Barometric Pressure: A solid state pressure sensor built into the sensor electronics provides accurate measurement of barometric pressure changes over a wide range. Electronic temperature compensation is included for highest accuracy over the operating temperature of the sensor.

Accuracy: ± 2 mbar

Range: 500-1100 mbars

Resolution: 0.1 mbar

Both temperature and humidity are built into the temperature shield at the bottom of the sensor package. The integral shield limits errors due to solar radiation. The RH sensor is a capacitive element enclosed in a protective membrane.

The tipping bucket electric rain gauge is composed of a complex spun collector funnel with a knife edge that diverts the water to a tipping bucket mechanism. For each tip, a magnet causes an electronic pulse that is recorded. The rainfall sensor is completely automatic - spent water drains out of the bottom of the housing, hence, the instrument requires no servicing.

Accuracy: ±1% at 2 in./hr or less

Resolution: 0.01 inch

Heated rain gauge is available.

Wind Speed
Resolution: 0.1 m/sec
Range: 0 to 50 m/sec
Threshold: 1 m/sec

Temperature
Accuracy: ± 0.5°C
Resolution: 0.01°C/F
Range: -40 to +60°C (-40 to +140°F)

Relative Humidity
Accuracy: ± 4%
Reporting Resolution: 1% RH
Range: 0 to 100%

Wind Direction
Resolution: 1 degree
Range: 0 to 360 degrees
Accuracy: ± 5 degrees
Threshold: 1 m/sec

Barometric Pressure
Accuracy: ± 2 mbar
Range: 500 - 1100 mbars
Resolution: 0.1 mbar

Rainfall
Accuracy: ±1% at 2 in./hr. or less
Resolution: 0.01 inch