称重衡器防爆技术的应用简介

Introduction to the application of explosion-proof technology for weight instrument

在石油、煤矿、化工行业,存在较多爆炸危险场所。在爆炸危险场所工作的电子衡器,必须进行防爆设计,选用具有"防爆证"的电器产品。在称重应用中的防爆衡器,一般是本质安全型与隔爆型两大类。当选用本安型防爆称重传感器、防爆接线盒、防爆安全栅配套时,就可组成本安型防爆衡器系统。本安防爆技术是一个系统的概念,一般由关联设备(安全栅)、现场本质安全设备和本质安全用电缆构成。复合本质安全型防爆电子秤,是一种比较经济适用的防爆衡器系统,在化工企业得到较多应用。

In the oil , coal and chemical industries, there are more dangerous places for explosions. In the explosion dangerous placeof work of electronic measuring device, must carry on explosion-proof design, choose the electrical product that has“explosion-proofcertificate” . The explosion-proof measuring device in weighing application is generally two kinds of essential safety type and explosion prooftype. When essential safety type of explosion-proof weighing load cell , explosion-proof junction box, and explosion-proof security grille isselected, the cost of the essential safety type explosion-proof measuring device system can be organized. The essential safety typeexplosion-proof technology is a system concept, which is generally composed of associated equipment （security grid） , on-site essential safetyequipment and essential safety cables. The compound nature safety explosion-proof electronic scale is a kind of economical and applicableexplosion-proof scale system, which has been used more in chemical enterprises.