Research on a Multichannel High-precision Temperature Measurement Method
(China Railway Construction Heavy Industry Co., Ltd., Changsha 410100, China)
Abstract
In the field of industrial automation, RTD and TC often can not be measured at the same time in a temperature measurement module with the low measurement accuracy and severe interference between channels. To address the above problems, a multichannel high-precision temperature measurement module is designed. This design not only enables adaptive switching of RTD and TC in a single measurement module, but also allows the measurement of various types of RTD and TC sensors. It has wide measuring range, solves the problem of high interference between channels, and the accuracy is high. Moreover, compared with traditional multichannel isolation methods, this method requires fewer components and reduces costs. Furthermore, the compatible design supports a wider range of application scenarios, reduces selection types, and lowers overall costs.
Keywords
temperature measurement; RTD/TC; high-precision; multichannel
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About the authors
Su Min (1993-), female, Han nationality, from Kaifeng, Henan, is an electrical engineer with a master's degree. Her research direction is automatic control.