有色金属行业的电磁流量计前置放大电路的设计与分析

Design and analysis of electromagnetic flowmeter preamplifier circuit in Nonferrous Metals Industry

有色金属行业广泛应用电磁流量计,使仪表性能得到提高,有效提高了测量的准确性,为此对电磁流量计转换器的前置放大电路部分进行探讨,研究在对放大电路设计期间所需的结构,并对此放大电路的电压增益、输入失调等方面进行有效的计算,如果能够保证接地效果没有问题,可以表明此电路能够平稳的运行。

Electromagnetic flowmeter is widely used in non-ferrous metal industry,which improves the performance of instrument and the accuracy of measurement.In this paper,the preamplifier circuit of electromagnetic flowmeter converter is discussed,the structure needed during the design of amplifier circuit is studied,and the voltage gain and input misalignment of this amplifier circuit are also discussed.If the grounding effect is guaranteed,the circuit can run smoothly.