How to distinguish smoke sensor detector and heat sensor detector.
Currently, fire detectors are divided into 3 types: smoke detectors, heat detectors and spark detectors. Depending on the area, we will use different types of fire detectors accordingly. Below we will learn about 2 types of smoke detectors and heat detectors.
Currently, fire detectors are divided into 3 types: smoke detectors, heat detectors and spark detectors. Depending on the area, we will use different types of fire detectors accordingly. Below we will learn about 2 types of smoke detectors and heat detectors.
1.Smoke sensor fire detector
- Ion smoke detector. This detector works on the conductive effect of air when ionized, it uses a stainless steel chamber to detect smoke. This ion chamber will be divided into 2 compartments in which 1 compartment is closed so that smoke cannot enter - this is called the sample compartment and the other compartment will be left open for frequent contact with the outside - this is called is the analysis pane.
- Optical smoke detector. This optical smoke detector is designed based on the principle of light diffusion and absorption. When a fire occurs, smoke will be generated and affect the normal flow of light particles in the air. The smoke will obscure the light or may block the light. Therefore, optical smoke detectors are designed based on the principle of light and the effect of smoke on light.
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2.Heat detector. Heat detectors are types of detectors that are manufactured based on the principle of an increase in the temperature of the environment where a fire occurs. When a fire occurs, the heat released by the fire will be dispersed to the surrounding space based on heat transfer and air convection. Currently on the market there are two types of heat detectors: fixed heat detectors and increased heat detectors.
-Fixed heat detector. This is a simple detector, made up of a temperature sensor, which can measure the ambient air temperature. The temperature threshold that this sensor measures will depend on the requirements given by the manufacturer such as 57 degrees Celsius, 70 degrees Celsius or 100 degrees Celsius. This fixed heat detector operates only when the ambient temperature reaches a limit and does not take into account the rate of heat rise.
-Increased heat detector This detector will work and transmit a signal to the center based on the sensor measuring the temperature change of the air in the surrounding environment. If the temperature rises from 5-7 degrees compared to the first minute, the system will give an alarm signal. The heat gain detector only works if the rate of heat rise reaches the limit and does not take into account the temperature of the environment.
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