FT - SGT1 Portable Tunnel Light Transmittance Meter: Empowering Safe Tunnel Operations

Atmospheric light transmittance refers to the ratio of the light intensity after light propagates through gases, aerosols, particulate matters and other substances in the atmosphere to the incident light intensity. Measuring the atmospheric light transmittance is of great significance for the transportation field. In special environments such as tunnels, the level of visibility directly affects the driving safety of vehicles. Since the atmospheric light transmittance is closely related to the visibility, measuring the light transmittance can indirectly reflect the visibility situation, providing a scientific basis for the optimization of the tunnel lighting system, traffic management decisions, and the safe operation of the tunnel.

Portable Tunnel Light Transmittance Meter FT-SGT1

The FT-SGT1 Portable Tunnel Light Transmittance Meter can not only measure the light transmittance, but also measure the visibility values of highways in various atmospheric environments, as well as the acceptance test values of VI and CO in the tunnel. It can also detect the temperature and humidity values of the tunnel environment, providing comprehensive data support for tunnel environment monitoring.

I. Technical Parameter Configuration

- Test Range: Light transmittance (T) 0-100%, Visibility (VI) 1-5000m, Smoke Concentration (K) 0-35×10⁻³ 1/m, CO Concentration (CO) 0-300ppm, Ambient Temperature - 40℃－+80℃, Ambient Humidity 0－100%.

- Status Display: Adopts a 128×64 dot matrix LCD screen, which can clearly display numbers and characters.

- Test Principle: Utilizes the light transmission method, digital probes, and electrochemical probes to ensure the accuracy of the measurement results.

- Test Error: ±2% of the light transmittance (full scale).

- Environmental Adaptability: Ambient temperature - 30～70 degrees Celsius, ambient humidity 0～100%RH, and it can work normally in relatively harsh environments.

- Communication Interface: Equipped with RS232 / RS485 / USB interfaces for convenient data transmission.

- Power Supply Voltage: Uses an AC 220V power adapter, and there is a built-in rechargeable lithium battery inside. Without an external power source, it can work continuously for more than 10 hours.

- Data Storage: It can store 70 consecutive hours of detection data, and the data can be exported to a computer through interfaces such as USB, supporting storage in EXCEL format.

II. Product Advantages

- Easy to operate. There is no need for installation and debugging. It can be detected as soon as it is powered on, and the detection data is displayed in real-time on the LCD screen, making it convenient for users to obtain information quickly.

- Good portability. It has a compact design and a moderate weight, making it easy to carry and conduct on-site detection at different locations such as in tunnels.

- Strong data storage and processing capabilities. The instrument has a built-in memory, which can automatically save the detection data. After the detection is completed, it can be brought back to the laboratory. By connecting to a computer, the data can be imported through the light transmittance display software and saved in EXCEL format, facilitating users to review, organize, and analyze the data.

In conclusion, the FT-SGT1 Portable Tunnel Light Transmittance Meter can measure the light transmittance, visibility, and environmental data such as temperature and humidity in real-time. It can also accurately detect the acceptance test values of VI and CO in the tunnel, helping the tunnel management department to grasp the environmental situation in a timely manner, providing strong support for the safe operation and maintenance of the tunnel. It is a very practical tool in modern tunnel management.