一、概述膜片膜盒在仪器仪表的弹性元件中,占很重要的地位。它作为仪器仪表的感受元件,具有许多优点:结构简单、具有相当高的灵敏度和精确度、在选择了适当的型面之后还能按一定的规律与被测量值成非线性关系输出。因而获得了广泛的应用。各种类型的仪器仪表分别会对膜片膜盒提出各种不同的技术要求,但是,迟滞、弹性后效和永久变形却是各种仪器仪表对膜片膜盒的主要技术指标中必提的主要性能要求之一。随着工业水平和自动化程度的不断提高, I. Overview Diaphragm diaphragm in the elastic components of instrumentation, accounting for a very important position. It has many advantages as the sensing element of the instrumentation. Its structure is simple, its sensitivity and accuracy are very high, and it can output non-linearly with the measured value according to certain rules after selecting the appropriate profile. Thus obtained a wide range of applications. Various types of instrumentation, respectively, will put forward a variety of membrane diaphragm boxes of different technical requirements, however, hysteresis, flexibility and permanent deformation after deformation but it is a variety of instruments on the membrane diaphragm box must be the main technical indicators One of the main performance requirements. With the continuous improvement of industrial level and automation,