Comparison between photoelectric smoke alarm and ion infrared thermometer:
There is an optical labyrinth inside the photoelectric smoke alarm, which is equipped with an infrared pairing tube. When there is no smoke, the infrared receiving tube cannot receive the infrared light emitted by the infrared transmitting tube. When smoke enters the optical labyrinth, after refraction and reflection, the receiving tube receives the infrared light. Light, the intelligent alarm circuit determines whether the threshold is exceeded, and if so, an alarm is issued. Ion smoke alarms are more sensitive to fine smoke particles and respond to all kinds of smoke in a balanced manner; while forward-facing photoelectric smoke alarms are more sensitive to larger smoke particles and have poor response to gray smoke and black smoke. some. When a raging fire breaks out, there are more small smoke particles in the air, and when there is a smoldering fire, there are more larger smoke particles in the air. If a large number of small smoke particles are produced after a fire breaks out, the ion smoke alarm will sound the alarm before the photoelectric smoke alarm. The time difference between the two types of smoke alarms is not large, but this type of fire spreads very quickly. It is better to install an ion smoke alarm in such situations. After another type of smoldering fire breaks out, a large number of slightly larger smoke particles are produced, and the photoelectric smoke alarm will alarm before the ion smoke alarm. In this kind of situation, it is recommended to install a photoelectric smoke alarm. If you want to get the best of both worlds, you can install both types of smoke alarms where smoke alarms are required.
Comparison between gas-sensitive infrared thermometer and ion-type infrared thermometer:
Fire smoke is a mixture composed of gas, liquid, and solid particles, and has physical properties such as volume, mass, temperature, and charge. Ion-type infrared thermometers escape from the ionization chamber through smoke. It interferes with the normal movement of charged particles, and the smoke state in the air is determined by changes in current and voltage. The gas-sensitive thermometer detects certain combustible gas components in the air, so in terms of fire exploration, the function of the gas-sensitive thermometer is not as good as that of the ion thermometer. The gas-sensitive thermometer can effectively detect trace leaks of various flammable gases such as coal gas, liquefied petroleum gas, natural gas, and carbon monoxide when detecting the content of combustible gases in the air. It is more suitable for petroleum, chemical industry, coal, electricity, Industrial enterprises such as metallurgy and electronics, as well as gas plants, liquefied petroleum gas stations, hydrogen stations and other places where flammable gases are produced and stored.
