FT-BN20 Portable Visibility Detector: Precision Forward Scattering Instrument

The FT-BN20 Portable Visibility Detector is a precision instrument designed using the forward scattering principle, which automatically calculates current visibility values by measuring the total air extinction coefficient. With a maximum range of 20 kilometers, this device meets the precise visibility monitoring needs across multiple fields.

The instrument is designed based on the QX/T 536-2020 industry standard and directly measures atmospheric extinction coefficients through the forward scattering method. Its optical system receives light signals scattered by aerosol particles at specific angles, and combines algorithm models to convert real-time data into accurate visibility values. This measurement method effectively avoids the limitations of traditional transmissometers that rely on long baseline sites.

Product Advantages

The entire device weighs no more than 10 kg and adopts an integrated structure. With compact dimensions of 300×150×220 mm and a built-in 6.6AH lithium battery, it can operate continuously for over 12 hours, making it suitable for field mobile monitoring tasks.

Equipped with a 10.1-inch high-brightness touch screen that displays real-time monitoring data and historical curves. A built-in 8GB memory card automatically records measurement results, supporting data query and export functions.

The aluminum alloy housing achieves IP65 protection rating, featuring waterproof and dustproof properties. With an operating temperature range of -20℃ to 60℃ and humidity adaptation range of 0-100%RH, it can withstand various harsh weather conditions.

Communication and power interfaces are integrated with lightning protection design, and a built-in watchdog circuit ensures long-term stable operation of the device. The 24V DC power supply system consumes less than 10 watts, supporting long-term continuous monitoring.

Measurement error does not exceed ±2% within 2 kilometers, is controlled within ±5% in the 2-10 kilometer range, and remains within ±10% in the maximum range segment. Measurement repeatability error is no greater than 4%.

The FT-BN20 Portable Visibility Detector is suitable for real-time visibility monitoring on highways, airports, and ports, as well as meteorological station data collection and emergency meteorological services. It can also be used for environmental assessment at disaster sites, emergency rescue command support, atmospheric particulate matter concentration research, climate change observation, and other environmental scientific research tasks.