Anemometers

An anemometer, sometimes known as an air speed meter or wind gauge, is a wind measurement tool that is used to measure wind speed and is a common weather station instrument across New Zealand (NZ).

Anemometers play a vital role in accurately monitoring wind speed, providing data through various measurement methods. There are several types of anemometers, each designed to function differently based on its specific application and measurement needs.

Most handheld wind speed meters are rugged and durable, built to withstand harsh weather conditions. Many are also weatherproof, making them suitable for long-term mounting and continuous measurement. These devices are utilized in a wide range of applications, from weather forecasting to high-tech scientific research labs, ensuring reliable data collection in diverse environments across New Zealand.

To learn more, please see our complete guide to anemometers.

Types of Anemometer

The types of anemometer depend on the type of measurement application it is used for. Below are some common types:

Cup Anemometers

Cup anemometers are the simplest type of wind measurement device, typically mounted on a pole. They consist of two, three, or four spinning cups that rotate in response to the wind. As wind speed increases, the cups spin faster, allowing the anemometer to accurately measure airflow speed, which is then displayed as a digital readout.

Vane Anemometer

This type of wind measurement tool is also known as propeller or windmill anemometers. Like cup anemometers, they use wind blades that turn, instead of cups. Some handheld propeller anemometers are also called impeller wind monitors because their propellers blades are protected by a caging unit to protect your hand.

Pressure-tube Anemometer

This anemometer uses the pressure generated by the wind to measure its speed. This type of anemometer, often referred to as a Pitot tube anemometer, is commonly used in aircraft and sailboats to determine airspeed and wind velocity.

Hot-wire (Thermal) Anemometers or Constant Current Anemometers

Hot-wire anemometers, also known as thermal or constant current anemometers, are often designed for handheld use. They operate by heating a thin wire to a specific temperature and then measuring the cooling effect of the airflow around it. By assessing how quickly the wire cools and to what temperature it reaches, the anemometer can accurately determine the wind speed.

Thermal Anemometers with Velocity/Temperature Profiling

These have the smallest sensor which measures both velocity and temperature. They are commonly used in wind tunnels for circuit board and heat sink analysis. Thermal anemometers are highly sensitive and can accurately measure low airspeeds, making them suitable for research and development applications.

Ultrasonic Anemometers

Ultrasonic anemometers are considered the professional standard for measuring wind speed. They utilize high-frequency sound waves and typically feature two or three pairs of sound transmitters and receivers positioned at right angles to each other. Built-in electronic circuits track the time it takes for sound to travel from each transmitter to its corresponding receiver. By measuring the differences in the speeds of the sound beams, these circuits can accurately calculate the wind speed.

Key Features of Anemometers

If you’re looking for an anemometer for sale, consider these important features to ensure you select the right air speed meter for your needs:

• Measurement Parameters: Different anemometers measure various parameters beyond wind speed, such as wind direction, temperature, and humidity. Consider which parameters are essential for your application. Some anemometers may also calculate wind chill or provide data logging capabilities.
• Accuracy: The accuracy of an anemometer determines how close its readings are to the actual wind speed. Accuracy is crucial for applications requiring precise measurements, such as scientific research or wind energy assessments. Look for a wind measurement tool with high accuracy ratings and calibration options
• Range: Anemometers have specific measurement ranges for wind speed. Choose a wind gauge with a range that covers the expected wind speeds in your environment. Some anemometers are designed for low wind speeds, while others are suitable for high winds.
• Durability: Consider the durability of the anemometer, especially for outdoor use. Look for wind speed meters made from robust materials that can withstand harsh weather conditions, such as rain, dust, and extreme temperatures.
• Portability: If you need to take measurements in different locations, portability is essential. Handheld anemometers offer convenience and flexibility for field work and on-site assessments.

Applications of Anemometers

Anemometers are versatile wind measurement tools used in various fields to assess wind speed, direction, and airflow patterns.

• Weather Monitoring: Weather enthusiasts and meteorologists rely on wind speed meters to track wind conditions for forecasting and research.
• HVAC and Building Management: HVAC technicians and facility managers use air speed meters to optimise system performance and ensure proper ventilation in buildings.
• Scientific Research: Scientists utilise wind anemometers in various research fields to study wind patterns, air pollution, and conduct experiments.
• Agriculture: Farmers use wind gauges to assess wind conditions before crop spraying or controlled burning, ensuring safety and effectiveness.

Get Reliable Anemometers for Every Application with RS New Zealand

RS New Zealand offers a wide selection of high-quality anemometers for sale, ensuring you find the perfect wind meter for your needs. Whether you're a weather enthusiast, HVAC technician, scientist, or agricultural professional, we have the widest range of anemometers in NZ to suit your specific application. Browse our range of wind speed meters from top brands like Extech, Kestrel, KIMO, and more today.

Ordering & Delivery Information for NZ

RS New Zealand provides fast and reliable delivery for anemometers and all our products across NZ. For detailed information about our delivery options and fees, please visit our delivery page.