Extech AN300 Large Vane Thermo-Anemometer with 4in Vane and Batteries

Description

Product Overview

The Extech AN300 Large Vane Thermo-Anemometer is engineered for reliable, high‑precision airflow and temperature measurement in demanding industrial and scientific environments. Constructed from durable plastic housing, the device weighs just 0.2 kilograms, making it lightweight yet robust enough to withstand daily field use. Its 4‑inch (10 cm) vane is specifically sized to capture accurate velocity data in large ducts, ventilation shafts, and HVAC systems where smaller vanes would struggle. The built‑in LCD screen simultaneously displays air velocity (40‑5900 ft/min) or airflow (0‑99,999 CFM) and temperature (-4‑140 °F / -20‑60 °C), allowing technicians to quickly assess conditions without toggling between instruments. Additional functions such as Min/Max recording, Data Hold, and an Auto Power‑Off timer extend battery life and improve data capture efficiency. The AN300 ships with four AAA alkaline batteries and a rugged hard carrying case, ensuring you are ready for on‑site measurements right out of the box.

Usage

Designed for HVAC technicians, indoor air quality consultants, and facility managers, the AN300 excels in a variety of real‑world scenarios. Use it to verify ductwork performance during system commissioning, troubleshoot airflow imbalances in commercial buildings, or conduct routine maintenance checks in industrial plants. Its large vane is ideal for measuring air movement in oversized ventilation channels, while the temperature sensor helps detect hot spots or drafts that could affect equipment efficiency. Because the device is battery powered and includes a hard case, it can be easily transported to remote locations, rooftop units, or confined spaces where plug‑in power sources are unavailable. The intuitive interface reduces training time, enabling both seasoned professionals and new apprentices to obtain reliable data quickly.

Why Choose Us

When selecting an anemometer, reliability, accuracy, and ease of use are paramount. The Extech AN300 delivers on all three fronts. Extech’s reputation for quality instrumentation is backed by a two‑year warranty and rigorous factory testing, ensuring each unit meets exacting performance standards. The combination of a large 4‑inch vane and a high‑resolution LCD provides data that is both precise and easy to interpret, reducing the likelihood of measurement error. Additionally, the inclusion of a hard carrying case and pre‑installed batteries means you can begin testing immediately, minimizing downtime. Our dedicated customer support team is available to assist with calibration, troubleshooting, and any post‑purchase inquiries, reinforcing our commitment to long‑term customer satisfaction.

Key Features

• Large 4‑inch vane captures accurate airflow in oversized ducts, improving diagnostic confidence.
• Dual‑display LCD shows velocity or flow together with temperature for comprehensive environmental assessment.
• Min/Max and Data Hold functions enable quick trend analysis without additional equipment.
• Auto Power‑Off conserves battery life, extending operational time between charges.
• Includes four AAA batteries and a hard case, plus responsive after‑sales support for peace of mind.

FAQ

What is the measurement range for air velocity?

The AN300 measures air velocity from 40 to 5,900 ft/min, covering most commercial and industrial airflow applications.

Can the device measure airflow in CFM?

Yes, by selecting the airflow mode, the AN300 calculates cubic feet per minute (CFM) based on the measured velocity and the cross‑sectional area of the duct.

How does the temperature sensor work?

The built‑in thermistor provides temperature readings from –4 °F to 140 °F (–20 °C to 60 °C), allowing simultaneous monitoring of thermal conditions alongside airflow.

Is the AN300 suitable for outdoor use?

While primarily designed for indoor HVAC applications, the device can be used outdoors in dry conditions; however, exposure to rain or extreme humidity should be avoided.

What warranty does Extech offer?

Extech provides a two‑year limited warranty covering manufacturing defects, and our support team is ready to assist with any calibration or performance questions.