Visibility sensor

Visibility sensor measurement principle

Visibility sensor is a professional optical instrument used to convert the measured atmospheric extinction coefficient into meteorological visibility by means of forward scattering and backscattering.Haze is composed of many tiny water droplets and various fine particles in the air. Infrared light emitted from the light source is scattered by water droplets and then detected by a highly sensitive detector. Within a certain range, the more water droplets or other tiny particles are detected, the greater the intensity of the scattered light. The light scattering intensity is converted into a standard visibility value through embedded software calculation.

Visibility sensor main features

The transmitting and receiving units are installed in the same chassis as the controller unit, which is small in size, light in weight, compact in structure, and easy to install and debug;

It can automatically detect the optical contamination, make corrections and compensations, and issue maintenance alarms when the warning value is exceeded:

Direct continuous measurement

No moving parts - low maintenance

Easy installation and debugging

Visibility sensor main technical parameters

Detection range: 10-2000 meters

Measurement accuracy: ±5%

Light source: high brightness infrared LED

Response time: 1 second

Digital output: RS485/232

Working temperature: -20-50°C

Working humidity: 0-99%

Supply voltage: VDC 12-24V

Power consumption: 5W (10W with heating)

Dimensions: 280×150×150 mm (length×width×height)