在毛主席革命路线指引下,我国社会主义工业建设蓬勃发展,生产技术日新月异,在钢铁、电力、煤炭、化工、石油等主要部门,由于生产过程的自动化——工艺流程的高精度测量和自动化控制的发展,对标准压力表的需要越来越迫切,对它的要求也越来越高。不单要求精度高,显示准确,更重要的是要性能稳定,温度变差小,使用可靠,寿命长。这些,除标准压力表的设计必须有合理的结构,弹簧 Under the guidance of Chairman Mao’s revolutionary line, the socialist industrial construction in our country is thriving and the production technology is changing with each passing day. In the major sectors of iron and steel, electricity, coal, chemical industry and petroleum, due to the automation of the production process - the high-precision measurement of the process flow and automation control The need for a standard pressure gauge has become more and more urgent and the requirements for it have become higher and higher. Not only requires high accuracy, accurate display, more importantly, stable performance, small temperature variation, reliable use and long service life. These, in addition to the standard pressure gauge design must have a reasonable structure, spring