随着生产和技术的发展,为降低劳动强度,提高劳动生产率,一项必不可少的工作是生产过程自动化,而生产过程的自动控制离不开单元组合仪表。目前,企业中已大量使用的单元组合仪表,只有部分省、部门制定了本省、本部门的单元组合仪表的检定规程,对大多数省、部门来说尚无统一的检定 With the development of production and technology, in order to reduce labor intensity and improve labor productivity, an indispensable task is to automate the production process, and the automatic control of the production process can not be separated from the unit instrument cluster. At present, the unit has been widely used in business unit instrument cluster, only some provinces, departments developed the province, the department’s unit combination instrument verification procedures for most provinces, departments there is no uniform test