{"title":"Gas temperature meter","authors":"N. Zashchepkina, M. Svyta","doi":"10.5604/01.3001.0015.9095","DOIUrl":null,"url":null,"abstract":"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.\n\nDesign/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\".\n\nFindings: 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.\n\nResearch limitations/implications: On the basis of the proposed design of gas temperature meter it is possible to construct devices with various lengths of probes.\n\nPractical 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.\n\nOriginality/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.","PeriodicalId":14825,"journal":{"name":"Journal of Achievements in Materials and Manufacturing Engineering","volume":"72 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Achievements in Materials and Manufacturing Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5604/01.3001.0015.9095","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
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.
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[...]
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