【摘要】 在工业生产过程中,某些环境可散发出易燃气体、蒸汽或粉尘,当其在空气中达到一定浓度,遇到火源就会引起爆炸,危害国家和人民生命财产的安全。本文从本安防爆的原理出发,阐述了本安系统自动化仪表专业设计中应注意的几个问题,主要包括如何正确选配现场仪表、如何正确选用本安系统的电缆(线)以及如何考虑配线距离的限制等。更多还原

【Abstract】 In industrial production,the flammability gas,steam and fine dust from some place are given out.When it mixes with air up to a certainty concentration,and falls across the fire flake,it would explode.It harms to the county and the people’s life or worth.According to the principle of the essence safety avoid explode,discussed several problems should be pay attention to the design of automation instrument.Mainly include how to choice the field instrument,how to choice the essence safety system cable and how to consider the limit of the cables length,etc.更多还原