The ion smoke detector is a point detectorIt contains a small amount of radioactive material in the ionization chamber, the ionization of indoor air become a conductor, by allowing a certain current between two electrodes in the air, the air into the local ray ionization state, the voltage effect on the formation of ion flow, which gives the ionization chamber of an effective conductivity. When the smoke particles enter the ionized region, they reduce the conductivity of the air due to bonding with the ions, resulting in the weakening of the ion movement. When the conductivity is below a predetermined value, the detector alarms.
The infrared beam smoke detector is a linear detector,It is a fire detector that responds to smoke parameters around a narrow strip in the guard area. The main difference with the previous two point type smoke detector is the beam line type smoke detector transmitter and a receiver is divided into two independent parts, two use separate relative, middle connected by beam. The infrared beam smoke detector is divided into two types: the opposite and the reflected.A smoke detector is suitable for installation where smoke or fire is easy to occur after a fire; it should not be installed in a place where the smoke is larger or the ventilation rate is faster.
The photoelectric smoke detector is also a point detector,It uses smoke from fires to alter the propagation of lightDeveloped by the basic nature of sex. According to the absorption and scattering of light by smoke particles. The photoelectric smoke detector is divided into two types: shading and astigmatism.
