• Benchtop closed-loop wind tunnel for elevated temperature testing of boards and components at different velocities
• Flow range: 1 to 5 m/s (200 to 1,000 ft/min), Uniformity: +/- 1%
• Temperature range: Ambient to 85°C (185°F), Uniformity: +/- 1ºC
• Instrument ports: 6
• Measure the effect of airflow on drag and pressure drop for components and boards

The CLWT-115 is a research quality closed loop wind tunnel that provides a convenient, accurate system for thermally characterizing PCBs and individual components at controlled temperatures from ambient to 85°C. The CLWT-115 wind tunnel produces air flows up to 5 m/s (1000 ft/min). The clear Lexan test section lets the user view the test specimen and allows for flow visualization.

Unlike open-loop wind tunnels, the CLWT-115 recirculates internal air. This allows the system heater to quickly warm the air to a specific temperature. The testing of boards and components in hot air is a requirement in some NEBS and other standards. The precise controls and temperature range of the CLWT-115 wind tunnel allows its use for testing heat sink performance and for calibrating air and temperature sensors.

The complete wind tunnel fits on most lab benches and is powered by the CLWTC-1000 (included). The CLWTC-1000 requires 220 VAC at 20 Amps. The CLWT-115 has a smaller footprint than traditional, closed-loop wind tunnels or environmental test chambers. The wind tunnel’s test section can be accessed from the top door or sides for mounting and repositioning of boards, components and sensors. Internal rail guides provide an easy mechanism to install test specimens of different sizes (e.g., PCB, heat sink). Instrument ports (6) are provided in the side walls of the test section for placing temperature and velocity sensors such as thermocouples, Pitot tubes and hotwire anemometers (sold separately).