Choosing the Right Visibility Sensor

The Fengtu Visibility Sensor is a professional device used to measure atmospheric transparency, quantifying Meteorological Optical Range (MOR) to provide critical data for traffic safety and weather warning systems.

Its mainstream working principle is "forward scattering". The sensor's built-in optical transmitter emits an infrared pulsed light beam. As this light travels through the atmosphere, it interacts with aerosol particles (such as fog, dust, and pollutants) in the air, producing scattering. The optical receiver accurately detects the scattered light intensity in specific directions, and finally the microprocessor controller calculates the current visibility value based on a specialized mathematical model.

Fengtu is a manufacturer specializing in the research, development, and production of various monitoring equipment. The company's solutions cover four major sectors: meteorological environment, agricultural soil, water quality, and atmospheric environment, aiming to provide customers with one-stop monitoring services.

For different application scenarios, Fengtu has designed several instruments for measuring visibility:

【FT-NJD10 Visibility Monitoring Station】This product is mainly used for visibility and weather phenomenon monitoring in open areas such as highways and bridges. It can collect data in real-time, and when visibility decreases, the system sends information to the control center for timely adjustment of ventilation and lighting systems or issuance of speed limit warnings to ensure driving safety. The device typically consists of a visibility sensor, data logger, pole mount, power supply system, and cloud platform.

【FT-NJD50 Visibility Monitoring Station】This is a high-performance monitoring device from Fengtu Technology with a measurement range of up to 0-50 kilometers. It is often used in transportation, aviation, and maritime fields that have higher requirements for visibility monitoring.

【FT-SDN1 Tunnel Visibility Detector】This product is specifically designed for special enclosed environments like tunnels. It operates using the "transmission principle" different from forward scattering. The device consists of a transmitter/receiver and a reflector, installed on the tunnel ceiling or side walls, measuring visibility by detecting the degree of attenuation of the light beam propagating through the air. A major feature of this product is its ability to simultaneously monitor both visibility and carbon monoxide concentration, providing direct basis for tunnel ventilation and safety management.