本安型产品火花试验装置及其自动配气系统的介绍

Introduction on the Spark Test Device and Its Automatic Gas Distribution System for Intrinsically Safe Product

目前国内几家防爆检验站用来做本质安全检验的火花试验装置,其基本工作原理一般都是相同的,而标准上规定的试验用爆炸性气体的浓度对不同的危险场合使用的设备有不同的规定和等级要求,文章对此做了介绍和论述。

For the moment, spark test device used for testing intrinsically safe circuit in several test stations for Explosion protected apparatus are the same in principle. However, it is stipulated in relevant standard that the concentration of explosive gases in test should be different for the testing equipments or devices, even their grades in different hazardous location. What is the significance of such requirements in the testing for intrinsically safe circuit.