Ultrasonic Wind Sensor (Modbus)


UA‑1™ ultrasonic anemometer can be used on Dyacon MS-100 series weather station. It provides wind speed and direction in a compact package. Digital data are delivered using the Modbus RTU industrial protocol, which allows for long cable runs to computers, programmable logic controllers (PLCs), BAS, SCADA, and some data loggers.

SKU: UA-1-075 Categories: , Tags: , , ,



Ultrasonic Wind Sensor Introduction

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UA‑1™ is an ultrasonic anemometer that provides both wind speed and wind direction in a digital, smart wind sensor.

UA‑1 can be installed on Dyacon MS‑100 series weather stations.

This Modbus sensor can also be used independently for industrial applications and can be connected directly to PLCs, SCADA equipment, and DCS to directly add environmental data for other automation and logging applications.

Feature Summary

  • Wind speed (3 s, 2 min avg, and 10 min avg)
  • Wind direction (3 s, 2 min avg, and 10 min avg)
  • Rolling maximum wind speed and direction capture
  • No bearings or moving components
  • No wind direction dead spots
  • Modbus RTU
  • Low-power operation

Manuals & Software


UA-1 Data SheetUA-1 Instruction Manual

Key Features


UA-1™ is made of machined acetal and nylon 12.

Mechanical construction minimizes snow accumulation.

Wind Direction and Speed

The wind direction and wind speed are detected using ultrasonic technology.


The mounting tube fits over standard 3/4” pipe (IPS, SCH40), actual pipe OD 1.05″ (26.7 mm).

Data Connection

Power and data are supplied through a 4-wire connection. UA‑1 wind sensor uses a Modbus RTU slave interface.


Wind Speed

Operational Range

0 m/s to 45 m/s (o mph to 89 mph)*

Starting Threshold

1 m/s (2.2 mph)


0.1 m/s (0.2 mph)

Operational Range Accuracy

+/- 1%

Sample Rate

1 Hz

* Modbus output units are m/s. Miles per hour units are for reference only.

Wind Direction


0° to 360°


1 m/s (2.2 mph)


+/- 1°




Power Input

5 VDC to 18 VDC


At 5 VDC:

6.5 mAavg at 1 Hz sample, 3 Hz Polling

1 mA avg at 1 Hz sample, 0.02 Hz Polling



Acetal and nylon 12.

Overall (WxDxH)

66 mm x 66 mm x 160 mm (2.6” x 2.6” x 6.3”)


4 conductor, 24 AWG, stranded

Foil shield w/ drain wire

Outdoor rated cable

5 m standard length.

Custom lengths available.

Weight w/ Cable

0.43 kg (0.95 lb) w/ 5 m cable

Weight w/o Cable

0.25 kg (0.55 lb)

Mounting Hole

26.9 mm (1.06”) dia x 38 mm (1.5”) DP

Custom mounting solutions available.

Data Output


Modbus RTU Slave (RS-485)

Half duplex (2-wire)

Default 19200, N, 8, 1


Operating Temperature

-15°C to 50°C

Storage Temperature

-15°C to 50°C

Operating Humidity

0 to 100%



Custom mounting solutions available.

Accessories sold separately.

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