This visibility measurement instrument utilizes the forward-scattering method to assess atmospheric visibility

By measuring the total atmospheric extinction coefficient via the forward-scattering principle, the instrument calculates visibility values. It offers a measurement range of up to 10 km with a resolution of 1 m, and its measurement accuracy complies with established classification standards. It is suitable for a wide range of applications, including emergency response, road traffic management, meteorological observation, maritime operations, and environmental monitoring. Featuring an integrated, lightweight, and portable design, the device is ready for operation immediately upon unboxing. It is equipped with a 10.1-inch high-brightness touchscreen, allowing users to view real-time data and access historical trend curves directly on-site. An internal 8 GB SD card automatically stores measurement data, which can be queried locally or exported. Additionally, the device includes a high-capacity lithium battery, ensuring it can meet emergency monitoring requirements in outdoor environments where an external power supply is unavailable.

The instrument’s housing is constructed from high-quality aluminum alloy, providing robust protection against water, dust, and impacts—making it well-suited for complex field environments. An internal watchdog circuit ensures stable and reliable long-term continuous operation, while the communication and power interfaces incorporate lightning protection to minimize the risk of hardware damage from lightning strikes or electrostatic discharges. The device operates on a 24V power supply with low overall power consumption, making it ideal for long-term, uninterrupted monitoring. It utilizes an RS232 digital interface, enabling the automatic transmission of monitoring data without the need for additional protocol adaptation. As a professional-grade atmospheric visibility measurement tool, it employs the well-established forward-scattering principle to provide quantitative observations, eliminating the subjective bias inherent in manual visual estimation. It delivers objective, continuous raw data essential for safety management and meteorological record-keeping in low-visibility conditions. In areas frequently affected by heavy fog, rain, or snow, the instrument can be rapidly deployed to capture changes in visibility in real time, assisting authorities in issuing warnings and coordinating operations. It effectively serves both as a portable solution for emergency use and as a reliable system for long-term, fixed-site monitoring.