Introduction
The flame detector is mainly used in the exploration of petrochemical industry and natural gas, drilling at sea and on land, storage of flammable materials, explosives and munitions in military industry.
It can detect UV 180-260nm band and infrared 4.35±0.15μm band.
The longest detection range in the world can reach 500 meters.
Principle of flame detection
Flame radiation is gas radiation with discrete spectrum and solid radiation with continuous spectrum. It ranges from 0.1μm to 10μm or wider in wavelength. In order to avoid the interference of other signals, ultraviolet light less than 300 nm or CO2 emission spectrum near 4.4μm, which is unique in flame are often used as the detection signal. The ultraviolet sensor only responds to the ultraviolet light in the range of 185-260nm, but is not sensitive to the optical fiber in other spectrum ranges. It can be used to detect the ultraviolet light in the flame. Because the sunlight passing through the atmosphere to the surface is usually less than 300 nm, the ultraviolet band of 220-280 nm belongs to the solar spectral blind area (solar blind area). Compared with infrared detector, UV detector is more reliable with high sensitivity, high output and high response.
Flame detector
Operating Principle
Flame detector is used to detect the visible or invisible light radiation in the atmosphere while the smoke and heat are produced when the material is burning.
Flame detector is a kind of fire detector used to respond to fire, that is, to detect the light intensity of flame combustion and the flickering frequency of flame.
According to the optical characteristics, it can be divided into three categories: ultraviolet detector for short wavelength, infrared detector for long wavelength, and hybrid ultraviolet / infrared detector for simultaneously measuring long wavelength and short wavelength.
Applications
Oil and gas exploration, offshore drilling, land drilling, production and storage of petrochemical products, transportation and storage of flammable materials, etc.
Recommended model
UV band detector (used in petrochemical industry)
EPD-440-0/2.5
EPD-365-0-2.5
Infrared band detector (mostly used in thermal power station)
Silicon (pin-13dsb recommended)
InGaAs