The investigation of effects of humidity and temperature on torque transducers calibration

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
M. Barış Tuğcu ◽  
Erol Feyzullahoğlu
Keyword(s):  
Measurement Uncertainty ◽  
Environmental Conditions ◽  
Strain Gauges ◽  
Air Humidity ◽  
Mechanical Device ◽  
Test Environment ◽  
Dead Weight ◽  
Measurement Results ◽  
Temperature And Humidity ◽  
Torque Transducer

AbstractTorque transducer is mechanical device that converts an energy form to another energy form. Torque transducers are calibrated by using machines such as dead weight calibration machines and reference torque transducer systems. Torque transducers are at risk of being affected by various environmental conditions such as temperature and humidity, and deviating from expected measurement results due to strain gauges on them. These factors should be kept under control, if this is not possible, contribution of ambient temperature and air humidity effects on measurement results should be taken into consideration. In this study, measurements were made according to DIN 51309 directive, and effect of other parameter changes on measurement uncertainty, while temperature and humidity kept constant in turn, was investigated. In this study, the goal was to reduce measurement uncertainty of calibration by determining the optimum temperature and humidity values in test environment. As a result of this study, the optimum values are obtained. The lowest measurement uncertainty was found at 21 °C and 50 % RH in this experimental study. In a test environment where optimum environmental conditions are obtained as a result of this study, the torque transducers will have the opportunity to work with maximum precision.

scholarly journals OTOMATISASI SISTEM BUKA-TUTUP ATAP RUMAH TELESKOP DAN PENGONTROL KELEMBABAN UDARA MENGGUNAKAN RASPBERRY PI 3

2018 ◽  
Vol 3 (3) ◽  
pp. 163-169
Author(s):  
Melkianus Dona ◽  
Andreas Christian Louk ◽  
Jehunias L. Tanesib
Keyword(s):  
Dc Motor ◽  
Raspberry Pi ◽  
Automation System ◽  
Air Humidity ◽  
Measurement Results ◽  
Temperature And Humidity ◽  
Door Lock ◽  
Opening And Closing ◽  
And Control ◽  
Limit Switch

Abstrak Telah dirancang suatu sistem otomatisasi untuk buka tutup atap rumah serta pengontrol kelembaban udara menggunakan Raspberry Pi 3, motor DC, SHT30, limit switch, Fan dan Solenoid door lock. Tujuan utama dari perancangan sistem ini ialah untuk merancang sebuah sistem otomatisasi buka tutup atap rumah teleskop dan pengontrol kelembaban udara yang ada di dalam rumah teleskop. Sistem ini bekerja ketika mendapat input perintah dari user baik untuk membuka atap, menutup atap, maupun mengukur dan mengontrol suhu dan kelembaban di dalam rumah teleskop. Saat mendapat perintah buka atau tutup maka relay akan aktif sehingga motor akan membuka ataupun menutup atap. Demikian juga saat pengontrolan suhu dan kelembaban SHT akan mengukur suhu dan kelembaban dan hasil pengukurannya akan ditampilkan pada LCD ( Layar Monitor). Sistem otomatisasi  ini dapat bekerja dengan baik seperti yang diharapkan, baik dalam hal membuka dan menutup atap serta pengontrolan Suhu dan Kelembaban. Kata Kunci : Raspberry pi3, Sensor SHT30, Python, Motor DC. Abstract It has designed an automation system to open the roof cover and air humidity controller using Raspberry Pi 3, DC motor, SHT30, limit switch, Fan and Solenoid door lock. The main purpose of the design of this system is to design an open roof telescope automation system and the air humidity control that is inside the telescope house. This system works when it gets input commands from the user either to open the roof, cover the roof, or measure and control the temperature and humidity inside the telescope home. When getting the command open or close the relay will be active so that the motor will open or close the roof. Similarly, when controlling the temperature and humidity of the SHT will measure the temperature and humidity and the measurement results will be displayed on the LCD (Monitor Screen). This automation system works well as expected, both in terms of opening and closing the roof and controlling Temperature and Humidity. Keywords: Raspberry pi3, Sensor SHT30, Python, DC Motor.

scholarly journals OTOMATISASI SISTEM BUKA-TUTUP ATAP RUMAH TELESKOP DAN PENGONTROL KELEMBABAN UDARA MENGGUNAKAN RASPBERRY PI 3

2018 ◽  
Vol 3 (2) ◽  
pp. 163-169
Author(s):  
Melkianus Dona ◽  
Andreas Christian Louk ◽  
Jehunias L. Tanesib
Keyword(s):  
Dc Motor ◽  
Raspberry Pi ◽  
Automation System ◽  
Air Humidity ◽  
Measurement Results ◽  
Temperature And Humidity ◽  
Door Lock ◽  
Opening And Closing ◽  
And Control ◽  
Limit Switch

Abstrak Telah dirancang suatu sistem otomatisasi untuk buka tutup atap rumah serta pengontrol kelembaban udara menggunakan Raspberry Pi 3, motor DC, SHT30, limit switch, Fan dan Solenoid door lock. Tujuan utama dari perancangan sistem ini ialah untuk merancang sebuah sistem otomatisasi buka tutup atap rumah teleskop dan pengontrol kelembaban udara yang ada di dalam rumah teleskop. Sistem ini bekerja ketika mendapat input perintah dari user baik untuk membuka atap, menutup atap, maupun mengukur dan mengontrol suhu dan kelembaban di dalam rumah teleskop. Saat mendapat perintah buka atau tutup maka relay akan aktif sehingga motor akan membuka ataupun menutup atap. Demikian juga saat pengontrolan suhu dan kelembaban SHT akan mengukur suhu dan kelembaban dan hasil pengukurannya akan ditampilkan pada LCD ( Layar Monitor). Sistem otomatisasi  ini dapat bekerja dengan baik seperti yang diharapkan, baik dalam hal membuka dan menutup atap serta pengontrolan Suhu dan Kelembaban. Kata Kunci : Raspberry pi3, Sensor SHT30, Python, Motor DC. Abstract It has designed an automation system to open the roof cover and air humidity controller using Raspberry Pi 3, DC motor, SHT30, limit switch, Fan and Solenoid door lock. The main purpose of the design of this system is to design an open roof telescope automation system and the air humidity control that is inside the telescope house. This system works when it gets input commands from the user either to open the roof, cover the roof, or measure and control the temperature and humidity inside the telescope home. When getting the command open or close the relay will be active so that the motor will open or close the roof. Similarly, when controlling the temperature and humidity of the SHT will measure the temperature and humidity and the measurement results will be displayed on the LCD (Monitor Screen). This automation system works well as expected, both in terms of opening and closing the roof and controlling Temperature and Humidity. Keywords: Raspberry pi3, Sensor SHT30, Python, DC Motor.

scholarly journals Radioactive Aerosols under Conditions of New Safe Confinement in 2018

2020 ◽  
Vol 18 ◽  
pp. 79-85
Author(s):  
O. S. Lagunenko ◽  
◽  
V. Ye. Khan ◽  
O. K. Kalynovskyi ◽  
V. O. Kashpur ◽  
...  
Keyword(s):  
Surface Layer ◽  
Release Rate ◽  
Environmental Conditions ◽  
Contaminated Water ◽  
Aerodynamic Diameter ◽  
Air Humidity ◽  
Radioactive Aerosols ◽  
Precipitation Temperature ◽  
Maximum Value ◽  
Temperature And Humidity

The results of monitoring of radioactive aerosols emissions from the Shelter object in 2018 are given. The maximum value of «unorganized» release rate was observed in November and was 4.6 kBq/(m2 ∙ day). The completion of construction and sealing of the enclosing contours of the New safe confinement (NSC) in 2018 completely limited the influence of meteorological environmental conditions: precipitation, temperature and wind on the Shelter object. As a result of changes in the temperature and humidity conditions inside the facility, water accumulations of radioactively contaminated water in rooms gradually dry up, air humidity decreases, which in turn helps to increase the secondary dust lift, including from the surfaces of fuel-containing masses. In 2018, the average daily density of radioactive particles precipitation on the light roofing totalled 2.2 kBq/(m2 ∙ day), which was higher than in the previous years. Increase in release of radioactive particles intensity on the Shelter object’s light roofing is provided by implementation of building and assembly works under the NSC Arch. The concentration of sum of long-lived beta-emitting aerosols-carriers (90Sr + 90Y and 137Cs) entering the atmosphere through the Bypass system was within the range of 0.1-2.6 Bq/m3. Besides, 137Cs share was 30%. The particles with 4.3-10 μm active median aerodynamic diameter acted as their carriers. Stable trend is observed in reducing the sum of long-lived beta-emitting aerosols in unorganized releases through «Bypass» system. Airflow movement within «Bypass» system has unstable character. In 2018, airflow direction inside the Shelter object was prevailing. The data on the contamination by radioactive aerosols of the atmosphere surface layer under the NSC Arch are represented.

Estimation of uncertainty in olfactometry

2009 ◽  
Vol 59 (7) ◽  
pp. 1409-1413 ◽  
Author(s):  
T. Higuchi
Keyword(s):  
Measurement Uncertainty ◽  
Interlaboratory Comparison ◽  
Collaborative Study ◽  
Estimation Procedure ◽  
Measurement Model ◽  
Standard Uncertainty ◽  
Expanded Uncertainty ◽  
Collaborative Test ◽  
Measurement Results ◽  
Estimation Of Uncertainty

Estimation of uncertainty in odour measurement is essential to the interpretation of the measurement results. The fundamental procedure for the estimation of measurement uncertainty comprises the specification of the measurement process, expression of the measurement model and all influences, evaluation of the standard uncertainty of each component, calculation of the combined standard uncertainty, determination of a coverage factor, calculation of the expanded uncertainty and reporting. Collaborative study such as interlaboratory comparison of olfactometry yields performance indicators of the measurement method including repeatability and reproducibility. Therefore, the use of collaborative test results for measurement uncertainty estimation according to ISO/TS 21748 and ISO 20988 is effective and reasonable. Measurement uncertainty of the triangular odour bag method was estimated using interlaboratory comparison data from 2003 to 2007 on the basis of the simplest model of statistical analysis, and the expanded uncertainty of odour index ranged between 3.1 and 6.7. On the basis of the establishment of the estimation procedure for uncertainty, a coherent interpretation method for the measurement results will be proposed and more effective and practical quality control of olfactometry will be available.

scholarly journals Development of Self-Sensing Textile Strengthening System Based on High-Strength Carbon Fiber

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2062
Author(s):  
Marcin Górski ◽  
Rafał Krzywoń ◽  
Magdalena Borodeńko
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
High Efficiency ◽  
High Strength ◽  
Strain Gauges ◽  
Building Structures ◽  
Climatic Chamber ◽  
Daily Cycle ◽  
Temperature Changes ◽  
Temperature And Humidity

The monitoring of structures is one of the most difficult challenges of engineering in the 21st century. As a result of changes in conditions of use, as well as design errors, many building structures require strengthening. This article presents research on the development of an externally strengthening carbon-fiber textile with a self-sensing option, which is an idea is based on the pattern of resistive strain gauges, where thread is presented in the form of zig-zagging parallel lines. The first laboratory tests showed the system’s high efficiency in the measurement of strains, but also revealed its sensitivity to environmental conditions. This article also presents studies on the influence of temperature and humidity on the measurement, and to separate the two effects, resistance changes were tested on unloaded concrete and wooden samples. The models were then placed in a climatic chamber, and the daily cycle of temperature and humidity changes was simulated. The research results confirmed preliminary observations of resistivity growths along with temperature. This effect is more visible on concrete samples, presumably due to its greater amount of natural humidity. The strain measurement with carbon fibers is very sensitive to temperature changes, and applications of this method in practice require compensation.

scholarly journals Accounting of the temperature effect when measuring the instantaneous values of the gunpowder gases pressure in the bores of firearms

2018 ◽  
pp. 14-17
Author(s):  
О. Kriukov ◽  
I. Lysak
Keyword(s):  
Quantitative Estimation ◽  
Static Characteristic ◽  
Effect Of Temperature ◽  
Strain Gauges ◽  
Stabilization System ◽  
Temperature Stabilization ◽  
Measurement Results ◽  
Instantaneous Pressure ◽  
Instantaneous Values ◽  
Strain Gauge Sensor

The relevance of measuring of the pressure of gunpowder gases in the barrel channels of a firearm is noted. The main requirements for a pressure sensor for intra-ballistic measurements are considered. A review of the works in the field of strain gauges error modelling is given. The analysis of the static characteristic of the strain gauge sensor of instantaneous pressure values is carried out. For typical combinations of sensor parameters, a quantitative estimation of the temperature error is performed. To reduce the effect of temperature on the measurement results, it is suggested to take into account the correction in the measurement results, or to apply the temperature stabilization system.

Measurement Uncertainty

2007 ◽  
Author(s):  
D. Brynn Hibbert
Keyword(s):  
Measurement Uncertainty ◽  
Uncertainty Budget ◽  
Test Material ◽  
Metrology In Chemistry ◽  
Energy Agency ◽  
Long Run ◽  
Measurement Results ◽  
Trading Partners ◽  
History Of ◽  
Student’S T

One of the great revolutions in metrology in chemistry has been the understanding of the need to quote an appropriate measurement uncertainty with a result. For some time, a standard deviation determined under not particularly well-defined conditions was considered a reasonable adjunct to a measurement result, and multiplying by the appropriate Student’s t value gave the 95% confidence interval. But knowing that in a long run of experiments repeated under identical conditions 95% of the 95% confidence intervals would include the population mean did not answer the fundamental question of how good the result was. This became evident as international trade burgeoned and more and more discrepancies in measurement results and disagreements between trading partners came to light. To determine if two measurements of ostensibly the same measurand on the same material give results that are equivalent, they must be traceable to the same metrological reference and have stated measurement uncertainties. How to achieve that comparability is the subject of this chapter and the next. When making a chemical measurement by taking a certain amount of the test material, working it up in a form that can be analyzed, calibrating the instrument, and performing the measurement, analysts understand that there will be some doubt about the result. Contributions to uncertainty derive from each step in the analysis, and even from the basis on which the analysis is carried out. An uncertainty budget documents the history of the assessment of the measurement uncertainty of a result, and it is the outcome of the process of identifying and quantifying uncertainty. Although the client may only receive the fruits of this process as (value ± expanded uncertainty), accreditation to ISO/IEC 17025 requires the laboratory to document how the uncertainty is estimated. Estimates of plutonium sources highlight the importance of uncertainty. The International Atomic Energy Agency (IAEA) estimates there are about 700 tonnes of plutonium in the world. The uncertainty of measurement of plutonium is of the order of 0.1%, so even if all the plutonium were in one place, when analyzed the uncertainty would be 700 kg (1000 kg = 1 tonne). Seven kilograms of plutonium makes a reasonable bomb.

Arborização Urbana e Microclima e a Percepção dos Acadêmicos de Educação Física Quanto a Essa Vegetação

UNICIÊNCIAS ◽  
2017 ◽  
Vol 21 (2) ◽  
pp. 99
Author(s):  
Ana Paula Barreto ◽  
Joaquim Mauro Mathias Filho ◽  
Richard Mistura Felisbino ◽  
Marcelo Studart Hunger ◽  
Lucas Rissete Delbim ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Physical Activities ◽  
Tree Planting ◽  
Air Humidity ◽  
Urban Centers ◽  
Resident Population ◽  
Beneficial Effects ◽  
Temperature And Humidity

A crescente urbanização das cidades, muitas vezes, sem planejamento tem provocado sérios danos às condições ambientais e de qualidade de vida das pessoas. Os efeitos benéficos das áreas arborizadas no que diz respeito ao microclima – temperatura e umidade do ar - sempre foram inerentes no que diz respeito à melhoria da qualidade de vida da população. Neste sentido, o objetivo desta pesquisa foi realizar um estudo quantitativo quanto a influência da arborização urbana no microclima dos centros urbanos, analisando as diferenças de temperatura e umidade do ar em dois locais da região central do município de Mogi Guaçu-SP, com características semelhantes de área, destacando-se pela quantidade de unidades arbóreas, assim como verificar a percepção de sessenta acadêmicos do primeiro ao quarto período do curso de Educação Física da Faculdade FMG, Mogi Guaçu–SP quanto aos benefícios dessa vegetação para a população residente. Está bem estabelecida a função exercida pela arborização na redução do calor e insolação no ambiente urbano, conforto térmico e evapotranspiração com aumento da umidade do ar, desempenhando assim, uma importante função na melhoria das condições ambientais das cidades, favorecimento da prática de atividades físicas e qualidade de vida de seus habitantes.Palavras-chave: Microclima. Arborização Urbana. Atividade Física.AbstractThe increasing urbanization of cities, often unplanned, has caused serious damage to the environment and people’s quality of life. The beneficial effects of wooded areas in terms of microclimate - air temperature and humidity have always been inherent in improving the population’s quality of life. In this sense, the objective of this research was to carry out a quantitative study on the influence of urban afforestation on the microclimate of urban centers, analyzing the differences in temperature and humidity of the air in two locations in the central region of the municipality of Mogi Guaçu-SP with similar characteristics of area, highlighing the number of tree units, as well as to verify the perception of 60 scholars from the first to the fourth period of the Physical Education course of the FMG College, Mogi Guaçu-SP, regarding the benefits of this vegetation to the resident population. The role of tree planting in reducing heat and sunshine in the urban environment, thermal comfort and evapotranspiration with increased air humidity is well established, thus playing an important role in improving the environmental conditions of cities, favoring the practice of physical activities and Quality of life of its inhabitants.Keywords: Microclimate. Urban Arborization. Physical Activity.

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