初起火灾范围小、火势弱，是用灭火器灭火的最佳时机。因此，正确合理地配置灭火器显得非常重要。

Beginning of small range of fire, the fire, is the best time to use the fire extinguisher extinguishing the fire. Therefore, the correct reasonable configuration of fire extinguisher is very important. 

一、灭火器的适用范围

A scope, a fire extinguisher 

扑救A类火灾可选择水型灭火器、泡沫灭火器、磷酸铵盐干粉灭火器、卤代烷灭火器。

Class A fire can choose water type foam fire extinguishers, fire extinguisher, dry powder fire extinguishers, halogenated ammonium phosphate powder extinguishers, will be. 

扑救B类火灾可选择泡沫灭火器(化学泡沫灭火器只限于扑灭非极性溶剂)、干粉灭火器、卤代烷灭火器、二氧化碳灭火器。

Class B fire can choose foam extinguisher (chemical foam fire extinguisher to put out a nonpolar solvent), dry powder fire extinguishers, halon fire extinguishers, carbon dioxide fire extinguisher. 

扑救C类火灾可选择干粉灭火器、卤代烷灭火器、二氧化碳灭火器等。

Class C fire can choose dry powder fire extinguishers, halon fire extinguishers, carbon dioxide fire extinguisher, etc. 

扑救D类火灾可选择粉状石墨灭火器、专用干粉灭火器，也可用干砂或铸铁屑末代替。

Class D fire can choose powdered graphite fire extinguisher, dry powder fire extinguishers, dry sand or at the end of the cast iron instead of is also available. 

扑救带电火灾可选择干粉灭火器、卤代烷灭火器、二氧化碳灭火器等。带电火灾包括家用电器、电子元件、电气设备(计算机、复印机、打印机、传真机、发电机、电动机、变压器等)以及电线电缆等燃烧时仍带电的火灾，而顶挂、壁挂的日常照明灯具及起火后可自行切断电源的设备所发生的火灾则不应列入带电火灾范围。

Electric fire can choose dry powder fire extinguishers, halon fire extinguishers, carbon dioxide fire extinguisher, etc. Charged fire include home appliances, electronic components, electrical equipment (computers, copiers, printers, fax machines, generators, motors, transformers, etc.) as well as wire and cable fire burns is charged, and hanging, hanging daily lighting lamps and lanterns and can cut off the power supply equipment before and after the fire the fire should not be included in the scope of electric fire. 

二、灭火器灭火的有效程度

Second, the degree of effective fire extinguisher 

相对于扑灭同一火灾而言，不同灭火器的灭火有效程度有很大差异：二氧化碳和泡沫灭火剂用量较大，灭火时间较长；干粉灭火剂用量较少，灭火时间很短；卤代烷灭火剂用量适中，时间稍长于干粉。配置时可根据场所的重要性，对灭火速度要求的高低等方面综合考虑。

Relative to put out a fire at the same, there is a big difference between different degree of effective extinguishing fire extinguisher: carbon dioxide and foam extinguishing agent dosage is bigger, fire fighting for a long time; Dry powder fire extinguishing agent dosage is less, extinguishing time is very short; , moderate dosage of halon fire extinguishing agent and slightly longer than dry powder. Configuration according to the importance of place, height and so on comprehensive consideration of fire extinguishing speed requirements. 

三、灭火器设置场所的环境温度

Three, the fire extinguisher setting place of ambient temperature 

灭火器设置场所的环境温度对于灭火器的喷射性能和安全性能有明显影响。若环境温度过低则灭火器的喷射性能显著降低，影响灭火效能；若环境温度过高则灭火器内压增加，灭火器有爆炸伤人的危险。因此灭火器设置点的环境温度应在灭火器的使用温度范围内。

Fire extinguisher setting place of ambient temperature for fire extinguishers injection had significant effect on the performance and safety performance. If the environment temperature is too low a fire extinguisher injection performance is significantly reduced, affect fire extinguishing efficiency; If the environment temperature is too high fire extinguisher internal pressure increases, the fire extinguisher is in danger of blast injury. So fire extinguisher the set point of the environment temperature should be in the temperature range of fire extinguisher use.