VAISALA WAS425AH Ultrasonic Wind Sensor Anemometer Cable WAS4251AH 102474

( Brand: Vaisala ), ( Manufacturer Part Number: WAS425AH ), ( Type: Ultrasonic Wind Sensor Anemometer )

Review VAISALA Ultrasonic Wind Sensor Anemometer Cable Working

The **Vaisala WAS425AH/WAS4251AH Ultrasonic Wind Sensor** is a high-precision, all-in-one meteorological instrument designed to deliver accurate and reliable wind measurements for a wide range of environmental monitoring, research, and industrial applications. Part of Vaisala s advanced ultrasonic anemometer series, this sensor combines cutting-edge technology with robust engineering to provide real-time data on wind speed, wind direction, and turbulence intensity with exceptional precision. The WAS425AH and WAS4251AH models are optimized for both ground-based and elevated installations, making them ideal for weather stations, agricultural monitoring, renewable energy assessments, aviation forecasting, and atmospheric research. Featuring a **three-dimensional ultrasonic path design**, the sensor measures wind components in all directions without moving parts, eliminating mechanical wear and ensuring long-term durability in harsh environments. Its **high-resolution ultrasonic transducers** operate at a frequency of 40 kHz, enabling rapid data sampling at up to **20 Hz**, which allows for detailed analysis of gusts, turbulence, and microclimate variations. The sensor s **wide measurement range** from 0 to 100 m/s (0 to 224 mph) covers everything from gentle breezes to extreme wind conditions, while its **low starting speed threshold of 0.1 m/s** ensures sensitivity in calm conditions. Additionally, the WAS425AH/WAS4251AH is equipped with **Vaisala s proprietary sonic path correction algorithms**, which compensate for temperature and humidity variations, delivering accurate wind data even under fluctuating atmospheric conditions. The **102474 cable** included with the sensor is a high-quality, weather-resistant, and UV-stabilized cable designed to withstand outdoor exposure, ensuring reliable signal transmission between the sensor head and the data logger or communication system. Whether deployed in remote field stations, on rooftops, or integrated into automated weather observation systems (AWOS), the WAS425AH/WAS4251AH provides meteorologists, engineers, and researchers with the confidence of **Vaisala s industry-leading calibration and certification**, including traceability to international standards such as WMO and ISO. With its **low maintenance requirements, long operational lifespan, and seamless compatibility with Vaisala s data acquisition systems**, this ultrasonic wind sensor represents the pinnacle of modern wind measurement technology, empowering users to make informed decisions in weather forecasting, renewable energy optimization, and environmental monitoring.

### **Pros and Cons of buying a Vaisala WAS425AH/WAS4251AH Ultrasonic Wind Sensor**

#### **Pros**

1. **High Accuracy and Precision**

The Vaisala WAS425 series is known for its high-precision ultrasonic measurement technology, providing reliable wind speed, direction, and temperature data. It uses three ultrasonic transducers to eliminate errors caused by wind direction, ensuring consistent performance even in varying conditions.

2. **Durability and Weather Resistance**

The sensors are designed for harsh environmental conditions, with an IP66 rating, meaning they are protected against dust and strong water jets. They can operate in extreme temperatures (from -40 C to 60 C) and are resistant to corrosion, making them suitable for long-term outdoor deployments.

3. **Low Maintenance Requirements**

Since the sensor has no moving parts, it reduces wear and tear compared to traditional cup anemometers or propeller-based systems. This leads to fewer calibration needs and extended operational life.

4. **Wide Measurement Range**

The WAS425 series can measure wind speeds from 0.1 m/s to 70 m/s (or higher, depending on configuration), making it versatile for various applications, including meteorology, renewable energy, and environmental monitoring.

5. **Compatibility with Data Loggers and Systems**

The sensor integrates seamlessly with most data acquisition systems, weather stations, and environmental monitoring platforms. It supports standard communication protocols like RS-485, Modbus, and CAN, allowing easy integration into existing setups.

6. **Temperature Measurement Capability**

The WAS4251AH variant includes an integrated temperature sensor, providing additional meteorological data without requiring separate instrumentation.

7. **Long-Term Stability**

Vaisala is a well-established brand in environmental monitoring, known for producing high-quality, stable sensors with minimal drift over time.

8. **Cable and Mounting Flexibility**

The included 102474 cable ensures proper signal transmission, and the sensor can be mounted on masts, towers, or other structures with appropriate hardware.

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#### **Cons**

1. **High Initial Cost**

Vaisala sensors are premium-priced compared to some generic or lower-end ultrasonic anemometers. The cost may be prohibitive for budget-conscious projects or small-scale applications.

2. **Complex Installation and Setup**

Due to its precision requirements, proper installation (e.g., mounting height, obstruction-free environment) is critical. Improper setup can lead to inaccurate readings, and professional assistance may be needed for optimal performance.

3. **Limited DIY Repairability**

As a high-end industrial sensor, repairs or calibrations typically require specialized tools and expertise. Users may need to rely on Vaisala s technical support or authorized service centers.

4. **Power Requirements**

The sensor requires a stable power supply (e.g., 12V or 24V DC), which may add complexity to remote or off-grid installations where power sources are unreliable.

5. **Potential Signal Interference**

In some cases, electromagnetic interference or nearby structures (e.g., buildings, trees) can affect ultrasonic measurements, though Vaisala s design minimizes this risk.

6. **Long Lead Times for Replacements**

Due to its specialized nature, replacement parts or entire units may have longer lead times compared to more common sensors.

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### **Conclusion**

The **Vaisala WAS425AH/WAS4251AH** is one of the most reliable and accurate ultrasonic wind sensors available, making it an excellent choice for professional meteorological, renewable energy, or environmental monitoring applications where precision and durability are critical. Its lack of moving parts, wide measurement range, and integration capabilities justify its higher cost for long-term use.

However, the **high upfront investment, complex installation requirements, and potential maintenance challenges** may make it less suitable for casual users, hobbyists, or projects with tight budgets. If cost is a major concern, alternatives like lower-end ultrasonic sensors (e.g., from Gill Instruments or other brands) might be considered, though they may sacrifice some accuracy and longevity.

### **Recommendation**

- You require **high-precision wind and temperature data** for professional or critical applications.

- You are working in **harsh or remote environments** where reliability and durability are essential.

- You have the **budget and technical resources** to properly install and maintain the sensor.

- Integration with **existing monitoring systems** is a priority.

- Your project has **limited funding** and can tolerate slightly lower accuracy.

- You need **simpler, lower-cost solutions** and are willing to compromise on long-term performance.

- You lack **expertise in sensor installation and calibration**.

For most **serious meteorological, renewable energy, or research applications**, the Vaisala WAS425 series remains the gold standard despite its cost. For less demanding uses, evaluating other brands (e.g., Gill Instruments, R.M. Young) may provide a more balanced cost-performance ratio.

Details:

Securely packaged. Item Specifics: Brand: Vaisala. Type: Ultrasonic Wind Sensor / Anemometer. Message with any questions prior to purchase.

No Checks or escrow.: Vaisala WAS425 AH Ultrasonic Wind Sensor Working. Built with durable construction and no moving parts for long-term, low-maintenance performance. Included: Vaisala WAS425AH Wind Sensor.

Reliable for continuous outdoor operation. Ultrasonic technology no moving parts low maintenance. Model: WAS425AH. Please review all photos carefully.

Condition: Used working. Key Features: Measures wind speed and direction. Sensor functions properly. Measurement Type: Wind Speed Direction.

Shows normal cosmetic wear. High-quality industrial ultrasonic wind sensor designed for accurate measurement of speed and direction. Ideal for meteorological, environmental, and industrial applications. Sensor Cable PN: 102474.

part #: was425ah price

• $618.96

specifications automationjack:

• brand: Vaisala
• mpn: Was425ah
• type: Ultrasonic Wind Sensor Anemometer

returns automationjack:

• method: Money back
• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

general automationjack:

• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
• condition: Used

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offer automationjack:

• availability: In Stock
• best offers: True
• started: March 30, 2026
• sold: 0
• quantity: 1
• options: Ship-to-home

seller automationjack:

• city: Commerce City, Colorado
• # reviews: 69902
• rating: 99.7%

shipping automationjack:

• type: Fixed
• class: Standard
• cost: $0.00
• carrier: UPS
• service: UPS Ground
• transit: 2-5 Days

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