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Texas Electronics TD-4 Wind Direction Sensor Light Duty


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Wind Direction
why you should buy from weather scientific

The Texas Electronics, Inc. TD-4 Wind Direction Sensor Light Duty is a mechanical style wind meter that measures the horizontal wind azimuth. This unit combines small physical size with superior bearings to meet the EPA's Prevention of Significant Deterioration (PSD) starting threshold requirements. It is a freestanding device for measuring the direction of wind. The sensor consists of a vane and counterweight assembly, which is mechanically coupled to a potentiometer (variable resistor). As the vane rotates in the wind, the potentiometer changes resistance proportionally to the direction of wind.

The recently updated mounting bar, bracket and hardware are included. This allows for the sensor to be simply and easily mounted on a 1" NPT pipe.



Weight 3.0000 lbs
Dimensions 20 × 12 × 12 in

+/- 3.0°


Wind Direction, 4-20 mA Output, Wind Direction, Potentiometer Output

Analog 4-20 mA output

0-355° electrical range; 10-30 VDC


APEC 3 or better


60', 22 gauge 3 conductor

Mounting Base

Screw attachment, 10-32 machine screw

Operating Range

0-360° mechanical

Operational Envelope

0-135 mph (0 to 60 m/s)

Overall Height

6.75" (17.2 cm)

Potentiometer Linearity

+/- 1.0%

Relative Humidity



Signal Presentation

10000 ohm potentiometer 0-357° electrical range 3 VDC excitation minimum or analog 4-20 mA, 0-355° electrical range (please specify)

Starting Threshold

0.6 mph (0.27 m/s)


-40 to 160°F (-40 to 70°C)

Turning Radius

13" (33 cm)


0.5 lbs (0.23 kg) less cable

Vane Overall Length

8.5" (21.6 cm)


3 years

Please see this page for our Texas Electronics Shipping & Return Policy:

Found a better price online? We'll match it or beat it if we can. 

All you need to do is let us know via phone or email ( and we'll let you know what we can do.

You will need to provide evidence of the better price online and it must include any shipping or taxes charged by that site. i.e. It needs to be the total price.

This only applies to new products, it does not apply to used condition products.