The tunnel external illumination detection instrument is a key equipment to ensure the safety of tunnel driving. It is based on the principle of photoelectric effect and uses high-precision sensors to monitor the external environmental illumination of the tunnel in real time. The measurement range can reach 0-7500 cd/m #178; Accuracy 0.1cd/m #178;. This instrument can dynamically adjust the lighting intensity inside the tunnel, eliminate the "black hole effect" and "white hole effect", reduce the risk of accidents, and save energy and consumption. It has an IP68 protection level, adapts to harsh environments, supports remote monitoring and data storage, and is an important component of intelligent tunnel lighting.
Tunnel external illumination detection instrumentIt is a key equipment to ensure the safety of tunnel driving. Based on the principle of photoelectric effect, it monitors the external environmental illumination of the tunnel in real time through high-precision sensors, with a measurement range of 0-7500 cd/m ² and an accuracy of 0.1 cd/m ². This instrument can dynamically adjust the lighting intensity inside the tunnel, eliminate the "black hole effect" and "white hole effect", reduce the risk of accidents, and save energy and consumption. It has an IP68 protection level, adapts to harsh environments, supports remote monitoring and data storage, and is an important component of intelligent tunnel lighting.

Tunnel external illumination detection instrumentThe controller with preset control mode can meet the requirements of the entire tunnel lighting control. It automatically switches the lighting switch according to the preset parameters based on the measured value of the light source, providing the best value for tunnel lighting. Its design complies with CIE's requirements for tunnel lighting measurement and can meet the "Design Specification for Ventilation and Lighting of Highway Tunnels". Moreover, its overall design can meet the requirements of harsh outdoor working environments.
Installation method:
The tunnel light intensity monitor is installed on the walls of the designated area inside the tunnel. In order to avoid damage caused by accidents or car debris, it needs to be installed at a height of about 4 meters and at an appropriate position greater than 10 meters from the tunnel entrance. The tunnel brightness monitoring device is installed at a suitable position outside the tunnel, about 4m from the road surface and 120-200m from the tunnel entrance. Has high reliability and low maintenance Latest microprocessor technology, digital operation, installationEasy debugging.
The tunnel exterior illuminance detection instrument is a key device to ensure traffic safety in tunnels. It is based on the principle of the photoelectric effect and high-precision sensors to monitor the real-time illuminance of the tunnel's external environment. The measuring range can reach 0-7500cd/m² with an accuracy of 0.1cd/m². This instrument can dynamically adjust the illumination intensity inside the tunnel, eliminate the 'black hole effect' and 'white hole', reduce accident risk, and save energy and reduce consumption. It has an IP68 protection grade, adapts to harsh environments, supports remote monitoring and data storage, and an important part of the intelligentization of tunnel lighting.