The B4 Wind Direction Vane

The B4 wind direction vane and housing are made from Black, UV stabilized, injection molded, polycarbonate. The balance weight is stainless steel. The B4 wind vane has three terminals which are #4-40 solid brass studs and nuts. The vane rotates on a stainless steel shaft with two shielded precision grade, stainless steel ball bearings. The conductive plastic potentiometer element is mounted in a machined aluminum housing.

- Range: Direction - 360 degrees of continuous rotation
- Sensitivity: Approx. 1 m/s (2.2 mph)

Specifications

- Weight: 0.1 kg (0.25 lb.)
- Dimensions: Overall length - 21 cm (8.3 in)
- Swept diameter - 27 cm (1.05 in)
- Overall height - 12 cm (4.3 in)
- Vane Size - 6 cm H x 10 cm L (2.3 in x 3.8 in.)
- Main housing diameter - 5 cm (2 in)
- Mounting: 13 mm (0.5 in) diameter mast with cotter pin and mast set screw.
- Range: Direction - 352 degrees electrical (8 degrees open)
- Signal: Analog DC voltage from conductive plastic potentiometer
- resistance 10K; linearity 1.0%, life expectancy of 50 million revolutions (4-6 years normal operation)
- Power Requirements: Regulated potentiometer excitation of 1 to 15VDC