Description

CDF-21A ULTRASONIC WIND SPEED & DIRECTION SENSOR

Name: CDF-21A Ultrasonic Wind Speed & Direction Sensor - Best Weather Station Manufacturer | Coda Sensors
Price: 80.00 CNY
Availability: InStock

Overview

CDF-21A Ultrasonic wind speed and direction sensor as a fully digital detector with high-precision sensors. It is integrated by the ultrasonic wind speed & direction sensors. We make it capable of accurately and quickly detecting the wind speed and wind direction. We equip Ultrasonic wind sensor with a built-in signal processing unit that can output a corresponding signal according to user needs.

Key Features

• No moving parts, effectively avoiding mechanical wear and failure, with a longer service life.

• High measurement accuracy and fast response speed

• Low maintenance cost, no need for frequent cleaning or replacement of vulnerable parts.

• Multiple Output Signals

• Compact structure, light weight, easy installation

Select Options

Accessory
▼ More

Image	Product	Specification
	Supporting pole	Material: Aluminum alloy
	Detachable 2.5m Tripod	Material: Stainless steel
	RS485 to USB Converter	RS458 and RS232 To USB （1m）
	4G WIFI Ethernet module	Free to the CODA cloud platform And Provide SIM card
	4.3-inch touch screen color recorder	Local storage, customized LOGO, wireless transmission

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Specifications

CDF-21A-Specifications

Item	Technical Specification
Power Supply	12-24VDC
Power consumption	<1W(Heating not activated); <3W(Heating activated)
Output Signal	RS232/RS485(Modbus/NMEA-0183),4-20mA/0-5V(only for wind speed & direction) optional
Operating Temperature	-40℃-+80℃
Ingress Protection	IP66
Heating power	Automatically turn on when the ambient temperature is below 0℃
Electronic compass	optional
Atmospheric pressure	optional
Dimension	Ф144*148mm
Weight(unpacked)	0.8kg
Main material	ASA
Item	Technical Specification
	Wind speed
Range	Wind speed:0-45m/s,0-60m/s Wind direction:0-360° Atmospheric pressure:150-1100hPa
Resolution	Wind speed:0.01m/s Wind direction:1° Atmospheric pressure:0.1hPa
Accuracy	Wind speed: ≤10m/s：±0.2m/s ＞10m/s：＜±2% the current value Wind direction:±3°
＜±2% the current value	±3°
Starting Threshold	0.1m/s
Extreme Wind Speed	60m/s

Dimension & Mounting

Download

Datasheet & User manual

CDF-21A Ultrasonic Wind Speed and Wind Direction Sensor-1.0 (178 downloads )

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FAQ

1. Q: What is an ultrasonic wind speed and direction sensor?

A: An ultrasonic wind speed and direction sensor (also called an ultrasonic anemometer) is a meteorological instrument that measures wind speed and direction using ultrasonic time‑difference technology, with no mechanical moving parts.

2. Q: How does it work?

A: It uses multiple ultrasonic transducers (typically arranged in a cross pattern) to send and receive ultrasonic pulses. Wind changes the propagation time of ultrasonic waves: faster with the wind, slower against it.

3. Q: What are the main advantages over mechanical anemometers?

No moving parts: No wear, longer lifespan, low maintenance
Fast response: Captures gusts and turbulence
High accuracy: Typically ±2% for wind speed, ±3° for direction
Zero start‑up wind speed: Measures from 0 m/s
360° omnidirectional: No dead angle
Harsh environment resistance: IP65/IP66, works in rain, snow, dust

4. Q: What are its typical measurement ranges?

Wind speed: 0–60 m/s
Wind direction: 0–360°
Resolution: 0.01 m/s (speed), 1° (direction)

5. Q: What output interfaces are available?

A: RS485 (MODBUS‑RTU) NMEA-0183

6. Q: Does it need calibration?

A: Factory‑calibrated; no field calibration required for most applications. For high‑precision use, annual verification with a wind tunnel is recommended.

7. Q: Why is the measured wind speed zero?

A: Actual wind speed is below the sensor’s minimum threshold (≈0.01–0.1 m/s)

8. Q: Can it work in extreme weather?

A: Yes, with IP65/IP66 protection. Heated models operate reliably at −40°C and resist freezing rain/ice.

9. Q: What applications is it suitable for?

A: Weather stations, wind farms, ports, bridges, environmental monitoring, smart cities, agriculture, and industrial IoT.

Additional information

Model	CDF-21A
OEM/ODM	Available
MOQ	1PCS
Lead Time	5-7 days
Certification	CE-EMC, RoHS, ISO9001
Size	22cm22cm23cm
Weight	1.98KG
Payment	T/T, L/C or Credit-card