气体温度表

Q3 Engineering

Journal of Achievements in Materials and Manufacturing Engineering Pub Date : 2022-03-01 DOI:10.5604/01.3001.0015.9095

N. Zashchepkina, M. Svyta

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引用次数: 0

摘要

本文的目的是研制一种便携式数字气体温度测量仪，测量范围为-50…+600°C。以数字器件最低有效位1℃测量空气污染源中含尘气体流动的温度。设计/方法/方法:提出了微处理器测量单元、探头和软件。本文提出了一种基于薄膜传感器HM220型“pt100”的高精度温度测量仪。研究结果:计算了相对于模数转换器输入范围的传感器信号调理的电气原理图参数。气体温度计的实验测量单元和探头组装完成。介绍了利用MSR-60M精密电阻箱对燃气温度计进行标定的原理。实验气体温度计的总标准不确定度由B型确定，测量范围的最大值为1.94°C。传感器“pt100”的误差对总标准不确定度的贡献最大，因此误差随测量温度的值成比例地增加。研究局限/启示:在提出的气体温度计设计的基础上，可以构建具有不同长度探头的装置。实际意义:该仪表是为环境实验室设计的，用于测量空气污染源排放的粉尘和气体的速度、流量和采样。原创性/价值:该装置设计的不同之处在于，它使用了由康士坦制成的热稳定导线作为温度传感器的延伸导体，该导线包含在不平衡惠斯通电桥中。该解决方案允许使用3.3 V单极电源用于仪表的模拟和数字部分。基于薄膜电阻温度计的温度计具有制造相对容易、材料消耗少、成本低、可靠性高等特点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Gas temperature meter

Purpose: of the article is to develop a digital portable gas temperature meter in the range of -50…+600°C. To measure the temperature of dusty gas flows in the air pollution sources with the least significant digit of the digital device 1°C. Design/methodology/approach: The microprocessor measuring unit, probe and software is proposed. It leads to build a high-precision temperature meter based on a thin film sensor HM220 type "pt100". Findings: The calculation of the electrical schematic diagram parameters for signal conditioning of the sensor relative to the input range of the analog-to-digital converter. The experimental measuring unit and the probe of the gas temperature meter are assembled. The principle of the gas temperature meter calibration with the help of a precision resistance box MSR-60M is considered. The experimental gas temperature meter has a total standard uncertainty determined by type B for a maximum value of the measurement range of 1.94°C. The error of the sensor "pt100" makes the largest contribution to the total standard uncertainty, so the error increases in proportion to the value of the measured temperature. Research limitations/implications: On the basis of the proposed design of gas temperature meter it is possible to construct devices with various lengths of probes. Practical implications: The proposed meter is designed for environmental laboratories that measure the velocity, flow and sampling of dust and gas emissions from sources of air pollution. Originality/value: The device design differs due to the use of thermostable wire made of constantan as extending conductors of the temperature sensor, which is included in the unbalanced Wheatstone bridge. This solution allows the use of unipolar power supply 3.3 V for both analog and digital part of the meter. Temperature meter based on a thin film resistance thermometer is characterized by relative ease of manufacture, low material consumption, cost and high reliability.

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来源期刊

Journal of Achievements in Materials and Manufacturing Engineering Engineering-Industrial and Manufacturing Engineering

CiteScore

2.10

自引率

0.00%

发文量

期刊介绍： The Journal of Achievements in Materials and Manufacturing Engineering has been published by the Association for Computational Materials Science and Surface Engineering in collaboration with the World Academy of Materials and Manufacturing Engineering WAMME and the Section Metallic Materials of the Committee of Materials Science of the Polish Academy of Sciences as a monthly. It has 12 points which was received during the evaluation by the Ministry of Science and Higher Education journals and ICV 2017:100 on the ICI Journals Master list announced by the Index Copernicus. It is a continuation of "Proceedings on Achievements in Mechanical and Materials Engineering" published in 1992-2005. Scope: Materials[...] Properties[...] Methodology of Research[...] Analysis and Modelling[...] Manufacturing and Processingv Biomedical and Dental Engineering and Materials[...] Cleaner Production[...] Industrial Mangement and Organisation [...] Education and Research Trends[...]