In the field of security surveillance equipment cameras, there is a camera that was born recently but is widely used, which is the explosion-proof surveillance infrared camera. Night vision explosion-proof cameras are also usually called explosion-proof infrared cameras or explosion-proof white light cameras. They can also provide excellent monitoring effects at night. This not only solves the previous problem of good daytime monitoring effects, but also solves the problem of unclear visibility due to excessive noise at night. Explosion-proof infrared cameras have outstanding advantages such as long night vision range, strong concealment, and stable performance, so they occupy most of the market in explosion-proof probe monitoring. A night vision explosion-proof camera with excellent performance should also pay attention to the following points in its application:

First, infrared lamp working conditions
Generally speaking, the radiation power of the infrared lamp of its explosion-proof infrared camera is proportional to the forward operating current. However, when it is close to the maximum rated value of the forward current, the temperature of the device rises due to the heat consumption of the current, causing the light emission power to decrease. If the current of the infrared diode is too small, it will affect the performance of its radiation power, but if the working current is too large, it will affect its life and even cause the infrared diode to burn out.

When the voltage crosses the forward threshold voltage (about 0.8V), the current begins to flow, and it is a very steep curve, indicating that its operating current requirements are very sensitive. Therefore, the working current is required to be accurate and stable, otherwise the performance and reliability of the radiation power will be affected. The radiation power will decrease as the ambient temperature increases (including the increase in ambient temperature caused by its own heat). For explosion-proof infrared lamps, especially long-distance infrared lamps, heat consumption is an issue that should be paid attention to when designing and selecting.

Second, the constant temperature of infrared waterproof camera
Since it is equipped with an explosion-proof infrared lamp that generates a large amount of heat, after the infrared lamp is started, heat will be concentrated in the front of the infrared camera during the entire working period (12 hours), that is, the temperature of the front end of the cavity is too high. If the heat cannot be dissipated evenly, It will definitely affect the normal operation of other components such as cameras.

Third, the problem of fogging and frosting of infrared waterproof cameras
The formation of fog and frost is due to the condensation of saturated water vapor in the air when it encounters cold. Depending on the strength and weakness of the cold environment, it condenses into frost and fog respectively. During the working process of explosion-proof infrared cameras, especially outdoor cameras, fog or frost will often form on the window glass of the protective cover due to seasonal changes, day and night temperature differences, rain and snow environments, etc., causing the camera to be unable to see objects clearly, directly affecting the monitoring effect.

Fourth, the air tightness of explosion-proof infrared cameras
In addition to constant temperature, another advantage of using automatic heating and cooling air conditioning is that the explosion-proof camera can be made fully enclosed without leaving any heat dissipation holes to prevent the entry of dust, moisture, and corrosive gases, making it adaptable to harsh environments with heavy dust. Such as chemical plants, oil depots, steel processing, military factories, oil tankers, machinery manufacturing, grain processing and storage, etc. Zone 1 with explosive mixtures of flammable gases, vapors and air in groups IIA, IIB, and IIC T1 to T6 , Zone 2 places, and explosion hazardous places in Zones 20, 21, and 22 formed by mixing combustible dust and air.