What problems will you encounter when using explosion-proof cameras and how to deal with them?
2024-4-11 View：
With the development and advancement of science and technology, some special industries also have special requirements for monitoring. There are dangerous explosive gases or dust in the working environment of chemical industry, petroleum, coal and other industries, so it is very necessary to install explosion-proof cameras. So what problems will explosion-proof cameras encounter during use, and how to deal with them?
Simple problem solving
1. Can’t see the picture on the explosion-proof surveillance camera?
First check whether there is any problem with the camera's imaging. If there is no problem with the imaging, please check the camera's power supply;
If the power supply is normal, then check the camera's transmission equipment (such as optical transceiver, etc.); if the transmission equipment is good, then check the connection of the transmission line; if the connection of the transmission cable is good, then check the transmission cable; if there is no problem with the transmission cable , then check the signal access device; if the signal access device is good, then check whether the system settings of the signal access device are correct.
2. The picture of the explosion-proof camera is blurry
It is possible that the focal length of the lens is not adjusted correctly;
There is oil or dust on the glass, lens or CCD; if it is blurry at night, it may be that some manufacturers have designed the infrared light too close to the lens in order to save costs, causing reflections. In these types of cameras, the infrared light is too close to the lens. The product will not be good when exposed to infrared light at night. Therefore, when choosing an explosion-proof camera, you must choose a manufacturer with experience and a good reputation.
3. The explosion-proof camera is installed at the scene, why is there no picture?
Check whether the power supply of the explosion-proof camera is connected properly and whether the power supply voltage meets the requirements; whether the BNC connector or video cable is in good contact; if you use a manual aperture lens, you need to check whether the aperture is open, and the automatic aperture lens needs to be adjusted; adjust the LEVEL potentiometer to make the aperture at the appropriate position.
Safety technical measures
What problems will be encountered during the installation and use of explosion-proof cameras, and what technical measures should be taken?
Applicants and approvers for temporary electricity use must fully understand the sources of explosive gas releases in the environment where electricity is used and the physical and chemical properties of fire hazard substances, such as explosion limits, ignition temperatures, Flash point, specific gravity, etc.; understand the release rules and spatial distribution of release sources, on-site ventilation conditions, etc.; understand what kind of explosion hazard area does the environment belong to? Based on the above situation, the following measures can be taken:
1. Any temporary use of electricity that cannot achieve overall explosion protection is prohibited in Zone 0 and Zone 1. Since explosive gas mixture is unlikely to occur in Zone 2 during normal operation, and even if it does occur, it will only exist for a short period of time. Therefore, temporary power-using operations can be carried out after implementing organizational and technical measures.
2. Use portable combustible gas alarms for on-site detection. When the explosive gas concentration does not exceed 10% of the specified value, it can be regarded as a non-explosion-proof area.
3. Use explosion-proof ventilators to set up temporary local strong ventilation to reduce the concentration of explosive gases and maintain a relatively positive pressure state.
4. Use flame-retardant canvas and other obstacles for isolation to limit the spread of explosive gas mixtures heavier than air and reduce the scope of the explosion hazard area.
5. Explosive gases are deposited in hoistways, pits, cable trenches, steam pipe trenches and other places in installation areas and oil tank areas. They must be inspected and tested to prevent the accumulation of explosive gases in dead corners.
6. When an accident occurs in a production device, operations such as sampling, dehydration, and discharge must be performed during production. When temporary use of electricity is likely to cause explosions and fire accidents, electricity users must absolutely obey the instructions of production staff, stop using electricity immediately, and stop power supply operations in non-explosion-proof areas.
7. For electrical tools and communication equipment with explosion-proof performance, you must carefully check the explosion-proof category, level, and temperature group on the nameplate before use. If the level, temperature group, or category of substances that may be released in the use environment is not reached, or the category is incorrect. , should be regarded as non-explosion-proof electrical equipment.
8. Temporary wires should be sheathed rubber soft cables. Cables laid along the ground must be prevented from being crushed and must have mechanical protection measures. Cables laid overhead are strictly prohibited from being tied with metal wires and affected by heat sources, and must be fixed with insulators.
9. Unsafe and unhygienic phenomena such as explosions, fires, electric shock accidents and dust hazards may occur during welding operations.
(1) Do not use flammable or explosive metal parts connected to main equipment as welding ground wires to prevent high temperatures or sparks from occurring at contact points with poor electrical connections;
(2) Prevent welding parts insulated from the ground and the no-load voltage or working voltage of the welding machine from extending when encountering poor contact points to produce sparks, arcs or high temperatures, which may detonate explosive gases in the environment;
(3) It is strictly prohibited to use the metal structures, pipes, tracks or other metal objects of the factory building to overlap and use them as conductors;
(4) Welding wires or welding machine power cords with damaged or aged insulation are strictly prohibited from crossing fire and explosion hazardous areas.
10. Temporary use of electricity in fire and explosion environments also involves safety issues such as electric shock. Therefore, relevant regulations and standards such as the Ministry of Electric Power's "Electrical Safety Work Regulations" must also be implemented.
11. Any temporary use of electricity involving machinery, technology, or electrical aspects must be confirmed by a three-party countersign to avoid accidents.
In recent years, explosion accidents have occurred frequently. Every time an explosion accident occurs, it will not only cause huge economic losses, but also cause heavy casualties. Therefore, those engaged in the chemical industry must have safety awareness, produce in strict accordance with regulations, and conduct regular inspections. Choose compliant explosion-proof products. Shenzhen Rongfang, the explosion-proof surveillance brand you can always trust!!
Simple problem solving
1. Can’t see the picture on the explosion-proof surveillance camera?
First check whether there is any problem with the camera's imaging. If there is no problem with the imaging, please check the camera's power supply;
If the power supply is normal, then check the camera's transmission equipment (such as optical transceiver, etc.); if the transmission equipment is good, then check the connection of the transmission line; if the connection of the transmission cable is good, then check the transmission cable; if there is no problem with the transmission cable , then check the signal access device; if the signal access device is good, then check whether the system settings of the signal access device are correct.
2. The picture of the explosion-proof camera is blurry
It is possible that the focal length of the lens is not adjusted correctly;
There is oil or dust on the glass, lens or CCD; if it is blurry at night, it may be that some manufacturers have designed the infrared light too close to the lens in order to save costs, causing reflections. In these types of cameras, the infrared light is too close to the lens. The product will not be good when exposed to infrared light at night. Therefore, when choosing an explosion-proof camera, you must choose a manufacturer with experience and a good reputation.
3. The explosion-proof camera is installed at the scene, why is there no picture?
Check whether the power supply of the explosion-proof camera is connected properly and whether the power supply voltage meets the requirements; whether the BNC connector or video cable is in good contact; if you use a manual aperture lens, you need to check whether the aperture is open, and the automatic aperture lens needs to be adjusted; adjust the LEVEL potentiometer to make the aperture at the appropriate position.
Safety technical measures
What problems will be encountered during the installation and use of explosion-proof cameras, and what technical measures should be taken?
Applicants and approvers for temporary electricity use must fully understand the sources of explosive gas releases in the environment where electricity is used and the physical and chemical properties of fire hazard substances, such as explosion limits, ignition temperatures, Flash point, specific gravity, etc.; understand the release rules and spatial distribution of release sources, on-site ventilation conditions, etc.; understand what kind of explosion hazard area does the environment belong to? Based on the above situation, the following measures can be taken:
1. Any temporary use of electricity that cannot achieve overall explosion protection is prohibited in Zone 0 and Zone 1. Since explosive gas mixture is unlikely to occur in Zone 2 during normal operation, and even if it does occur, it will only exist for a short period of time. Therefore, temporary power-using operations can be carried out after implementing organizational and technical measures.
2. Use portable combustible gas alarms for on-site detection. When the explosive gas concentration does not exceed 10% of the specified value, it can be regarded as a non-explosion-proof area.
3. Use explosion-proof ventilators to set up temporary local strong ventilation to reduce the concentration of explosive gases and maintain a relatively positive pressure state.
4. Use flame-retardant canvas and other obstacles for isolation to limit the spread of explosive gas mixtures heavier than air and reduce the scope of the explosion hazard area.
5. Explosive gases are deposited in hoistways, pits, cable trenches, steam pipe trenches and other places in installation areas and oil tank areas. They must be inspected and tested to prevent the accumulation of explosive gases in dead corners.
6. When an accident occurs in a production device, operations such as sampling, dehydration, and discharge must be performed during production. When temporary use of electricity is likely to cause explosions and fire accidents, electricity users must absolutely obey the instructions of production staff, stop using electricity immediately, and stop power supply operations in non-explosion-proof areas.
7. For electrical tools and communication equipment with explosion-proof performance, you must carefully check the explosion-proof category, level, and temperature group on the nameplate before use. If the level, temperature group, or category of substances that may be released in the use environment is not reached, or the category is incorrect. , should be regarded as non-explosion-proof electrical equipment.
8. Temporary wires should be sheathed rubber soft cables. Cables laid along the ground must be prevented from being crushed and must have mechanical protection measures. Cables laid overhead are strictly prohibited from being tied with metal wires and affected by heat sources, and must be fixed with insulators.
9. Unsafe and unhygienic phenomena such as explosions, fires, electric shock accidents and dust hazards may occur during welding operations.
(1) Do not use flammable or explosive metal parts connected to main equipment as welding ground wires to prevent high temperatures or sparks from occurring at contact points with poor electrical connections;
(2) Prevent welding parts insulated from the ground and the no-load voltage or working voltage of the welding machine from extending when encountering poor contact points to produce sparks, arcs or high temperatures, which may detonate explosive gases in the environment;
(3) It is strictly prohibited to use the metal structures, pipes, tracks or other metal objects of the factory building to overlap and use them as conductors;
(4) Welding wires or welding machine power cords with damaged or aged insulation are strictly prohibited from crossing fire and explosion hazardous areas.
10. Temporary use of electricity in fire and explosion environments also involves safety issues such as electric shock. Therefore, relevant regulations and standards such as the Ministry of Electric Power's "Electrical Safety Work Regulations" must also be implemented.
11. Any temporary use of electricity involving machinery, technology, or electrical aspects must be confirmed by a three-party countersign to avoid accidents.
In recent years, explosion accidents have occurred frequently. Every time an explosion accident occurs, it will not only cause huge economic losses, but also cause heavy casualties. Therefore, those engaged in the chemical industry must have safety awareness, produce in strict accordance with regulations, and conduct regular inspections. Choose compliant explosion-proof products. Shenzhen Rongfang, the explosion-proof surveillance brand you can always trust!!