Ukrainian Metrological Journal最新文献_第10页

A portable calorimeter for measuring the calorific value of natural gas 一种测量天然气热值的便携式量热计

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Ukrainian Metrological Journal Pub Date : 2021-09-29 DOI: 10.24027/2306-7039.3.2021.241253

L. Prysyazhnyuk, I. Petryshyn, B. Dolishnii, L. Ropyak

{"title":"A portable calorimeter for measuring the calorific value of natural gas","authors":"L. Prysyazhnyuk, I. Petryshyn, B. Dolishnii, L. Ropyak","doi":"10.24027/2306-7039.3.2021.241253","DOIUrl":"https://doi.org/10.24027/2306-7039.3.2021.241253","url":null,"abstract":"Abstract \u0000Natural gas quality assessment is a relevant issue. A critical analysis of calorimeter designs for measuring the calorific value of natural gas was carried out. The most common methods for determining the calorific value of natural gas are as follows: direct by gas calorimeters; indirect by gas chromatographs; indirect, based on correlations. The advantages of isoperibolic calorimeters of measuring calorific value of natural gas directly in the consumer’s conditions are substantiated. The design of a portable calorimeter containing a thermostated shell, calorimetric tank, Peltier element with tank, circulating pump, gas burner, thermostat systems, metered supply of natural gas and air, fuel ignition, sensors, combustion analyzer and control and measurement unit, was developed. The geometric dimensions of the calorimetric tank are optimized, materials and technologies of manufacturing parts are specified. The metrological analysis of the developed portable calorimeter was carried out. A method for measuring the calorific value of natural gas directly in the conditions of household consumers and transport enterprises was developed. The results of testing the prototype calorimeter in the laboratory confirmed its high performance and metrological characteristics, and the deviation of the measurement of the calorific value of natural gas from that determined using a gas chromatograph was 0.6%.","PeriodicalId":40775,"journal":{"name":"Ukrainian Metrological Journal","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41885768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Qualimetric assessment of metrological characteristics of household gas meters during periodic verification 定期检定时家用燃气表计量特性的质量评定

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Ukrainian Metrological Journal Pub Date : 2021-07-02 DOI: 10.24027/2306-7039.2.2021.236086

Орест Євгенович Середюк, Олександр Криницький, Василь Романів, Деніс Середюк, Анна Григорівна Винничук

引用次数: 0

Procedure of hydrogen and mixture impact assessment on the changes of mechanical parameters and errors of household gas meters 氢气和混合物对家用燃气表机械参数和误差变化的影响评估程序

IF 0.1

Ukrainian Metrological Journal Pub Date : 2021-07-02 DOI: 10.24027/2306-7039.2.2021.236083

I. Petryshyn, D. Serediuk, Yuriy Pelikan, Oleksandr Bas, Roman Manulyak

{"title":"Procedure of hydrogen and mixture impact assessment on the changes of mechanical parameters and errors of household gas meters","authors":"I. Petryshyn, D. Serediuk, Yuriy Pelikan, Oleksandr Bas, Roman Manulyak","doi":"10.24027/2306-7039.2.2021.236083","DOIUrl":"https://doi.org/10.24027/2306-7039.2.2021.236083","url":null,"abstract":"The article describes the method of conducting representative research to determine the effect of pure gaseous hydrogen and a mixture of hydrogen and natural gas (methane) on the performance and metrological characteristics of household gas meters. The experimental research has been carried out in two stages. 84 membrane and rotary meters have been selected for research. The main aspect of the need for such research is the safety of meters. Before the start of the tests and after each stage, the metrological characteristics of all gas meters on the reference prover are determined. At the first stage, a set of static tests is performed, according to which the internal and external short-term and long-term (42 days) tightness of gas meters are checked. A prototype of the installation layout has been developed to conduct experiments on determining the tightness. The second stage is to conduct a dynamic series of tests. Gas meters are assembled according to the developed scheme and installed for testing on the model of the gas distribution network system. It is recommended to use a drum-type meter as a reference gas meter. The criterion for determining the effect of hydrogen and gas meter is the established change in metrological characteristics after the study.","PeriodicalId":40775,"journal":{"name":"Ukrainian Metrological Journal","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45187250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of a linear static function for grain moisture meter with capacitive sensors 电容式谷物水分计线性静态函数的综合

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Ukrainian Metrological Journal Pub Date : 2021-07-02 DOI: 10.24027/2306-7039.2.2021.236098

О. В. Заболотний, Віталій Заболотний, Микола Дмитрович Кошовий

{"title":"Synthesis of a linear static function for grain moisture meter with capacitive sensors","authors":"О. В. Заболотний, Віталій Заболотний, Микола Дмитрович Кошовий","doi":"10.24027/2306-7039.2.2021.236098","DOIUrl":"https://doi.org/10.24027/2306-7039.2.2021.236098","url":null,"abstract":"Moisture content is a grain quality factor, a parameter which changes during the processes of storage and processing and determines consumer properties of different food products. OIML organization in its international recommendation OIML R59 “Moisture Meters for Cereal Grain and Oilseeds” restricts maximal permissible value of moisture meters uncertainty to not more than 3% of relative full scale error. Main task of the research is in receiving linear static function for the grain moisture meter with four capacitive sensors. Method of Least Squares and general linear regression instruments had been used for that purpose. Analyzing the graphs of modified static function for different moist substances it was possible to say that it happened to be far more effective than initial static function and the static function received from a first-order polynomial after the LS method implementation. Root mean estimator was calculated for initial static function, the static function received with the LS method and static function, received after general linear regression implementation as an integral difference between nominal and calculated values of moisture content. Corresponding root mean estimator values were 1.3062%, 1.1616% and 0.4158%, that proves the effectiveness of a static function modified with the general linear regression instruments.\u0000Keywords: moisture content measurement; capacitive moisture meter; reference channel; capacitive sensor; linear static function","PeriodicalId":40775,"journal":{"name":"Ukrainian Metrological Journal","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43922744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Method of kurtosis in estimating the measurement uncertainty during calibration of the electrical resistance measures using a potentiometer 用电位器校准电阻测量时估计测量不确定度的峰度方法

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Ukrainian Metrological Journal Pub Date : 2021-07-02 DOI: 10.24027/2306-7039.2.2021.236078

Ігор Петрович Захаров, Олеся Анатоліївна Боцюра, Валерій Семеніхін

引用次数: 0

The mathematical model of the system-oriented measuring instrument 面向系统的测量仪器的数学模型

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Ukrainian Metrological Journal Pub Date : 2021-07-02 DOI: 10.24027/2306-7039.2.2021.236057

Олег Величко, Олег Грабовський

引用次数: 1

Reliable instrumental metering of natural gas is the key to Ukraine’s energy independence 可靠的天然气仪表计量是乌克兰能源独立的关键

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Ukrainian Metrological Journal Pub Date : 2021-07-02 DOI: 10.24027/2306-7039.2.2021.236084

Аліна Коваленко

{"title":"Reliable instrumental metering of natural gas is the key to Ukraine’s energy independence","authors":"Аліна Коваленко","doi":"10.24027/2306-7039.2.2021.236084","DOIUrl":"https://doi.org/10.24027/2306-7039.2.2021.236084","url":null,"abstract":"By virtue of geographical and historic factors, Ukraine has been playing an important role in oil and natural gas deliveries to European energy markets. Such status is basically attributed to the fact that West and Central European countries, while being rather big consumers of natural hydrocarbons, have shortage in their own energy resources. \u0000On the other hand, major natural gas and oil reserves are concentrated in the Russian Federation, Caspian region and the Gulf area. Currently Ukraine has become a major juncture in the transit of gas and oil from Russia and Kazakhstan to European markets. The expected increase in consumption of natural hydrocarbon resources, as well as their uneven distribution make Ukraine, owing to its suitable geographical location and the developed gas and oil network, an “energy bridge” between the exporting countries and consumers in the industrialized Europe. \u0000In the article the author considers the modern gas supply system of Ukraine. The author carried out a study on the technical feasibility of calibration of flow meters on the environment of natural gas under pressure. Currently in Ukraine calibration is performed only in the air. This does not make it possible to reduce the error in the instrumentation of natural gas. Given the volume of natural gas consumption in the country (about 20 billion m3/year), this leads to huge non-production losses, negative impact on economic performance and inflated cost for end users. The European experience was analyzed: PTB, DNV, PIGSAR, SICK, INOTECH. Modernization of the gas industry of Ukraine is proposed.","PeriodicalId":40775,"journal":{"name":"Ukrainian Metrological Journal","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48094500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

About continuity and discreteness of quantities: examples from physics and metrology 关于量的连续性和离散性:来自物理学和计量学的例子

IF 0.1

Ukrainian Metrological Journal Pub Date : 2021-07-02 DOI: 10.24027/2306-7039.2.2021.236054

F. Pavese

引用次数: 1

Comparative analysis of the accuracy requirements of the equipment for determining the mean integral refractive index of air using different realizations of the gradient method 比较分析了不同梯度法实现下空气平均积分折射率测定设备的精度要求

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Ukrainian Metrological Journal Pub Date : 2021-07-02 DOI: 10.24027/2306-7039.2.2021.236075

P. Neyezhmakov, A. Prokopov, Tatiana Panasenko, A. Shloma

{"title":"Comparative analysis of the accuracy requirements of the equipment for determining the mean integral refractive index of air using different realizations of the gradient method","authors":"P. Neyezhmakov, A. Prokopov, Tatiana Panasenko, A. Shloma","doi":"10.24027/2306-7039.2.2021.236075","DOIUrl":"https://doi.org/10.24027/2306-7039.2.2021.236075","url":null,"abstract":"The speed of propagation of electromagnetic waves in the Earth’s atmosphere differs from the speed of their propagation in a vacuum, which is one of the main factors that have a significant impact on the accuracy of long distance measurement. This influence is taken into account in long distance measurement with the correction for the mean integral group refractive index of air, which depends on such meteorological parameters as temperature, atmospheric pressure and relative air humidity.\u0000The purpose of this work is to compare the accuracy requirements for equipment designed to measure temperature, pressure, and relative humidity required to determine the above correction by the gradient method using the Euler-Maclaurin quadrature formula (hereafter, the Euler-Maclaurin method) and the formula based on Hermite interpolation polynomials (hereafter, the Hermite method). The requirements for the uncertainty of measurements carried out with the sensors of meteorological parameters, allowing to find the mean integral group refractive index of air, providing length measurements of the baselines of up to 5 km with an expanded uncertainty of not more than 1 mm, are established.\u0000Keywords: atmosphere; mean integral group refractive index of air; laser long distance measurement","PeriodicalId":40775,"journal":{"name":"Ukrainian Metrological Journal","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46814810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Immersion ultrasonic transducers 浸入式超声波换能器

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Ukrainian Metrological Journal Pub Date : 2021-07-02 DOI: 10.24027/2306-7039.2.2021.236076

Ортаголі Хакімов

引用次数: 0