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自1987年起我国的工业热电偶和工业热电阻将采用与IEC国际标准相一致的新国家标准。这是一项涉及面十分广的工作。它不仅与偶丝、阻丝材料生产厂以及热电偶、热电阻生产厂有关:要改变铂热电阻铂丝的R_(100)/R_0值,改变一些热电偶的分度值,废除某种热电偶和新增两种热电偶;还与为数众多的与热电偶、热电阻配套的显示仪表和其他仪表的生产厂有关,要根据新的分度表更改桥路和标度;更与各行各业的在用的数以百万计的上述仪表的广大用户有关。这是仪器仪表行业采用国际标准工作中的一件大事。为了很好地完成这项任务,各方面作了大量工作。本文所述的就是这项任务的部分工作。本文以桥路理论计算知识为基础,推导出动圈仪表标度设计计算公式,利用BASIC语言编制程序,在LBC—220型计算机上进行了实践。由于作者在编制程序过程中,结合本厂动圈仪表表头的线性度情况考虑了修正系数,因此计算出的数据较为实用,特别是本文能对程序条款内容与计算程序框图相对应作出较详细的说明,有助于未接触过计算机的人员的程序的理解和应用。
Since 1987, China’s industrial thermocouple and industrial thermal resistance will be used with the IEC international standards consistent with the new national standards. This is a very broad area of work. It not only with the wire, wire material production plant and the thermocouple, RTD factory: To change the platinum RTD platinum wire R_ (100) / R_0 value, changing the thermocouple indexing value, the abolition of a thermoelectric Even with the addition of two kinds of thermocouples; but also with a large number of thermocouples, thermal resistance supporting the display and other instruments related to the production plant, according to the new indexing table to change the bridge and the scale; more with the various lines Industry in the millions of users with the majority of users. This is a major event in the instrumentation industry’s adoption of international standards. In order to accomplish this task well, a great deal of work has been done on all fronts. What is described in this article is part of the job. Based on the knowledge of bridge theory calculation, this paper deduces the calculation formula of moving coil instrument scale design, and uses BASIC language to program, and carries out the practice on LBC-220 computer. As the author in the process of preparation, combined with the dynamics of the instrument head of the linearity of the case to consider the correction factor, the calculated data is more practical, in particular, this article can be procedural content and calculation of the program block diagram to make a more detailed The explanation helps to understand and apply the procedures of those who have not been in contact with a computer.