The selection of flame detectors needs to take into account its own application scenarios, so the editor will explain it systematically for everyone.
1. How to choose a flame detector
1. Use three-band infrared flame detectors outdoors in petrochemical projects and dual-band infrared flame detectors indoors.
2. Use infrared/ultraviolet composite flame detectors in explosives factories.
3. Use ultraviolet flame detectors for metal and inorganic flame detection in indoor environments. Infrared flame detectors can be used for underground hydraulic stations and lubricating oil depots. Ultraviolet flame detectors or single-band infrared flame detectors cannot be used outdoors.
2. Precautions for installation and use of flame detectors
1. When installing and wiring the detector, the monitored area should be within the effective range of the field of view.
2. The installation of the detector should avoid obstacles as much as possible. For obstacles with horizontal and vertical dimensions not exceeding 0.5 meters, the distance between the detector and the obstacle should not be less than 2.5 meters; for obstacles with dimensions exceeding 0.5 meters and cannot be avoided, the number of detectors should be appropriately increased.
3. The installation height and position of the detector should be determined according to the sensitivity level of the detector. The distance between the detector and the monitoring target can be determined according to the characteristics of the fire, and is generally not less than 1.5m.
III. For places that meet one of the following conditions, it is advisable to choose point-type flame detectors or image-type flame detectors:
1 There is strong flame radiation during a fire.
2 Fires without a smoldering stage such as liquid combustion may occur.
3 A quick response to the flame is required.
IV. For places that meet one of the following conditions, it is not advisable to choose point-type flame detectors and image-type flame detectors:
1 There is thick smoke diffusion before the flame appears.
2 The lens of the detector is easily contaminated.
3 The "line of sight" of the detector is easily blocked by oil mist, smoke, water mist and ice and snow.
4 The combustibles in the detection area are metals and inorganic substances.
5 The detector is easily exposed to direct or indirect light sources such as sunlight and incandescent lamps.
The selection of flame detectors needs to take into account its own application scenarios, so the editor will explain it systematically for everyone.
1. How to choose a flame detector
1. Use three-band infrared flame detectors outdoors in petrochemical projects and dual-band infrared flame detectors indoors.
2. Use infrared/ultraviolet composite flame detectors in explosives factories.
3. Use ultraviolet flame detectors for metal and inorganic flame detection in indoor environments. Infrared flame detectors can be used for underground hydraulic stations and lubricating oil depots. Ultraviolet flame detectors or single-band infrared flame detectors cannot be used outdoors.
2. Precautions for installation and use of flame detectors
1. When installing and wiring the detector, the monitored area should be within the effective range of the field of view.
2. The installation of the detector should avoid obstacles as much as possible. For obstacles with horizontal and vertical dimensions not exceeding 0.5 meters, the distance between the detector and the obstacle should not be less than 2.5 meters; for obstacles with dimensions exceeding 0.5 meters and cannot be avoided, the number of detectors should be appropriately increased.
3. The installation height and position of the detector should be determined according to the sensitivity level of the detector. The distance between the detector and the monitoring target can be determined according to the characteristics of the fire, and is generally not less than 1.5m.
III. For places that meet one of the following conditions, it is advisable to choose point-type flame detectors or image-type flame detectors:
1 There is strong flame radiation during a fire.
2 Fires without a smoldering stage such as liquid combustion may occur.
3 A quick response to the flame is required.
IV. For places that meet one of the following conditions, it is not advisable to choose point-type flame detectors and image-type flame detectors:
1 There is thick smoke diffusion before the flame appears.
2 The lens of the detector is easily contaminated.
3 The "line of sight" of the detector is easily blocked by oil mist, smoke, water mist and ice and snow.
4 The combustibles in the detection area are metals and inorganic substances.
5 The detector is easily exposed to direct or indirect light sources such as sunlight and incandescent lamps.