Braided Exchanger (BE) Series

The BE™ Moisture Exchanger by Perma Pure is designed to regulate the humidity levels of gas streams in various applications, including calibration of gas detection systems, environmental monitoring, and scientific research. By either removing moisture from wet gas samples or adding humidity to dry calibration gases, the BE™ ensures accurate and stable measurements. Its versatility makes it suitable for use in Continuous Emissions Monitoring Systems (CEMS), laboratory analyses, and process monitoring, where precise control of gas humidity is essential.

At the core of the BE™ Moisture Exchanger is Nafion™ polymer membrane technology, which selectively permeates water vapor without affecting other gas components. This technology enables moisture transfer between the gas stream and the surrounding atmosphere, achieving equilibrium without the need for external power sources or purge gases. The device operates efficiently across a wide range of temperatures and pressures; the BE-HP series is capable of handling pressures up to 17 bar (250 psi). Its chemical resistance ensures long-term durability and reliability in a variety of environments.

The BE™ Moisture Exchanger performs two primary functions: drying and humidifying gas streams. In drying applications, it extracts moisture from wet gas samples, reducing their humidity to match the ambient environment. Conversely, in humidifying applications, it adds moisture to dry gases, ensuring they reach the desired humidity levels for calibration or analysis. The exchanger’s design allows for rapid response times, typically within 100 to 200 milliseconds, and continuous self-regeneration, leading to long-term performance with minimal maintenance. Its lightweight and portable design facilitate easy integration into various systems.