【 Weak current College 】 fire alarm products number naming rules summary---Power By 【 China power house network 】

1. detector class model of structure and meaning. Part one: from 3-5 Hanyu Pinyin letters, usually only three letters. Letters 1-J (police): fire alarm devices code. Letters 2-T (on): fire detector code. Letter 3-Y, W, F, G, Q, letters of fire detector type grouping symbols representing: smoke, heat, photosensitive, gas sensitive, hybrid "detector. Part II: from 2 pinyin, commonly used letters meanings: LZ: ion sensing smoke; GD: photoelectric smoke; MC: membrane cartridge differential temperature; BD: semiconductor fixed temperature; BO: fixed temperature semiconductor difference; ZW: UV; HW: infrared; BQ: semiconductor gas; CQ: catalytic gas; part three: the 2-3 digits, pinyin letters are an abbreviation for the name of the manufacturer, the Arabic numerals are the plant product serial number. Case study: JTW-BC/KX03 is city of alarm equipment factory "semiconductor difference temperature fire alarm control measuring device". 2. approach to making class model of structure and meaning. Part one: from 2-4 Hanyu Pinyin letters, normally only 2 letters. Letters 1-J (police): fire alarm controller code. Letter 3-B (ex): explosion-proof product code. Part II: from 2 – 4 Hanyu Pinyin characters, usually only three letters. Letter J, 1-Q, B letters: controller features code representing: "regional, concentrated, general-purpose" controller. Letter T, B 2-G, letters: controller structure symbol representing: "Cabinet, desktop, wall-mounted" controller. Letter 3-L: representative linkage type fire alarm controller, no linkage function controller without this letter. Part three: similar to the third part of the detector. Case study: JB-TG-4/KX21 is city of alarm equipment factory "generic-type fire alarm controller".