Linear heat fire detector
Patent Information
- Authority / Receiving Office
- CN ยท China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUXI SHENGMIN SENSING TECH
- Publication Date
- 2018-09-11
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Abstract
Description
technical field
[0001] The invention relates to a fire detector, in particular to a multi-component combined linear temperature-sensitive fire detector in the subject of safety engineering. Background technique
[0002] At present, there are three mature linear temperature-sensing fire detectors used in electric power, metallurgy, petrochemical and other industrial fields: switch value linear constant temperature fire detector, analog linear constant temperature fire detector and analog linear differential constant temperature fire detector fire detector. These three kinds of detectors are all processed into cables with temperature-sensitive materials and covered with sheaths. The detection mechanism is usually the principle of impedance change, that is, the detectors are made of cable materials with special temperature coefficients. When the detectors protect When the ambient temperature of the area changes, the impedance of the cable also changes accordingly, and the dete...