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As a basis for the electrical tomography of laboratory-scale rock samples (~ 10 cm), we developed a procedure for stable, multi-point, electrical measurement on rock samples that is effective even at high contact and sample resistance. Electrodes were strongly attached to the surface of high-resistivity rock using conductive and adhesive epoxy. Sustained current injection for long periods into high-resistance rocks was fulfilled using a constant direct current source with high internal resistance. Accurate voltage measurement across the high-resistance rock was accomplished by differential measurement using two high input resistance voltmeters. Measurements of high resistance also require a stable measurement environment: the temperature and humidity in the laboratory were controlled using an air conditioner, a humidifier, a dehumidifier, and a vinyl tent. Signal noise arising from human activities was eliminated by the remote operation of the measuring equipment and switching terminal. The proposed measurement procedure was evaluated in terms of the stability and accuracy of measured values and its applicability to electrical tomography. To assess measurement stability, we performed multiple measurements of a dry granite sample at various levels of absolute humidity. Our procedure recorded highly reproducible measurements under each humidity condition. The observed changes in measured values with absolute humidity indicate the importance of stabilising the temperature and humidity conditions in the laboratory. Applying our technique to multiple plastic samples with known resistivity confirmed its accuracy. To evaluate its applicability to electrical tomography, we measured the potential distribution on a dry granite surface in response to an injected current using a simple 40-electrode array. The potential distribution measured by our procedure agreed well with that predicted by forward modelling, demonstrating the robustness of our procedure in array measurements

The transmission of coronaviruses can be affected by several factors, including the climate. Due to the rapid spread of COVID-19 and the urgent need for rapid responses to contain the pandemic, it is essential to understand the role that weather conditions on the transmission of SARS-CoV-2. We evaluate the influence of meteorological factors on the incidence of COVID-19 during the first wave of the epidemic in Catalonia. We conducted a geographical analysis at the county level to evaluate the association between mean temperature, absolute humidity, solar radiation, and the cumulative incidence of COVID-19. Next, we used a time-series design to assess the short-term effects of meteorological factors on the daily incidence of COVID-19. We found a geographical association between meteorological factors and the cumulative incidence of COVID-19, from the end of March to June 2020, and a lesser extent in the short-term on the daily incidence during the first wave of the epidemic in Spain. Our findings suggest that warm and wet climates may reduce the incidence of COVID-19 in Catalonia. However, policy makers must interpret with caution any COVID-19 risk predictions based on climate information alone.

A literature review was carried out on the impact of moisture in New Zealand homes as well as the role ventilation and occupant behaviour play in controlling this. Bathrooms in residential homes were identified as being especially vulnerable. NZS4303:1990, clause G4 Ventilation of the New Zealand Building Code, and clause E3 of the New Zealand Building Code were summarised to provide context for how New Zealand buildings are designed. Measurements taken in houses throughout New Zealand by BRANZ as part of the House Condition Survey were made available for analysis. This included measurements of relative humidity and temperature. Data from one Dunedin house was thoroughly explored. This involved three objectives. The first step focused on identifying periods of rapid change in the amount of moisture introduced to the indoor environment, measured in absolute humidity. These periods were named 'moisture events'. The second objective was to visually communicate the changes in temperature and absolute humidity taking place on individual days, highlighting moisture events. The third objective was to analyse the identified moisture events, finding the key areas to focus on for the full analysis as well as areas that could be explored in further research. This process was then applied to all remaining houses. Moisture events were grouped into four categories: increases, decreases, episodes, and combinations. Episodes were the focus of the analysis, representing moisture being actively introduced to the indoor environment and then removed. These categories were further filtered, identifying the moisture events were most likely to have had a large impact on the indoor environment. Days were broken into four hour periods, with the filtered moisture events taking place in each period recorded. These were used to identify patterns in moisture events for each house. If a certain pattern of moisture events frequently took place, then days containing that pattern were described as

A literature review was carried out on the impact of moisture in New Zealand homes as well as the role ventilation and occupant behaviour play in controlling this. Bathrooms in residential homes were identified as being especially vulnerable. NZS4303:1990, clause G4 Ventilation of the New Zealand Building Code, and clause E3 of the New Zealand Building Code were summarised to provide context for how New Zealand buildings are designed. Measurements taken in houses throughout New Zealand by BRANZ as part of the House Condition Survey were made available for analysis. This included measurements of relative humidity and temperature. Data from one Dunedin house was thoroughly explored. This involved three objectives. The first step focused on identifying periods of rapid change in the amount of moisture introduced to the indoor environment, measured in absolute humidity. These periods were named 'moisture events'. The second objective was to visually communicate the changes in temperature and absolute humidity taking place on individual days, highlighting moisture events. The third objective was to analyse the identified moisture events, finding the key areas to focus on for the full analysis as well as areas that could be explored in further research. This process was then applied to all remaining houses. Moisture events were grouped into four categories: increases, decreases, episodes, and combinations. Episodes were the focus of the analysis, representing moisture being actively introduced to the indoor environment and then removed. These categories were further filtered, identifying the moisture events were most likely to have had a large impact on the indoor environment. Days were broken into four hour periods, with the filtered moisture events taking place in each period recorded. These were used to identify patterns in moisture events for each house. If a certain pattern of moisture events frequently took place, then days containing that pattern were described as

A literature review was carried out on the impact of moisture in New Zealand homes as well as the role ventilation and occupant behaviour play in controlling this. Bathrooms in residential homes were identified as being especially vulnerable. NZS4303:1990, clause G4 Ventilation of the New Zealand Building Code, and clause E3 of the New Zealand Building Code were summarised to provide context for how New Zealand buildings are designed. Measurements taken in houses throughout New Zealand by BRANZ as part of the House Condition Survey were made available for analysis. This included measurements of relative humidity and temperature. Data from one Dunedin house was thoroughly explored. This involved three objectives. The first step focused on identifying periods of rapid change in the amount of moisture introduced to the indoor environment, measured in absolute humidity. These periods were named 'moisture events'. The second objective was to visually communicate the changes in temperature and absolute humidity taking place on individual days, highlighting moisture events. The third objective was to analyse the identified moisture events, finding the key areas to focus on for the full analysis as well as areas that could be explored in further research. This process was then applied to all remaining houses. Moisture events were grouped into four categories: increases, decreases, episodes, and combinations. Episodes were the focus of the analysis, representing moisture being actively introduced to the indoor environment and then removed. These categories were further filtered, identifying the moisture events were most likely to have had a large impact on the indoor environment. Days were broken into four hour periods, with the filtered moisture events taking place in each period recorded. These were used to identify patterns in moisture events for each house. If a certain pattern of moisture events frequently took place, then days containing that pattern were described as

A literature review was carried out on the impact of moisture in New Zealand homes as well as the role ventilation and occupant behaviour play in controlling this. Bathrooms in residential homes were identified as being especially vulnerable. NZS4303:1990, clause G4 Ventilation of the New Zealand Building Code, and clause E3 of the New Zealand Building Code were summarised to provide context for how New Zealand buildings are designed. Measurements taken in houses throughout New Zealand by BRANZ as part of the House Condition Survey were made available for analysis. This included measurements of relative humidity and temperature. Data from one Dunedin house was thoroughly explored. This involved three objectives. The first step focused on identifying periods of rapid change in the amount of moisture introduced to the indoor environment, measured in absolute humidity. These periods were named 'moisture events'. The second objective was to visually communicate the changes in temperature and absolute humidity taking place on individual days, highlighting moisture events. The third objective was to analyse the identified moisture events, finding the key areas to focus on for the full analysis as well as areas that could be explored in further research. This process was then applied to all remaining houses. Moisture events were grouped into four categories: increases, decreases, episodes, and combinations. Episodes were the focus of the analysis, representing moisture being actively introduced to the indoor environment and then removed. These categories were further filtered, identifying the moisture events were most likely to have had a large impact on the indoor environment. Days were broken into four hour periods, with the filtered moisture events taking place in each period recorded. These were used to identify patterns in moisture events for each house. If a certain pattern of moisture events frequently took place, then days containing that pattern were described as

A literature review was carried out on the impact of moisture in New Zealand homes as well as the role ventilation and occupant behaviour play in controlling this. Bathrooms in residential homes were identified as being especially vulnerable. NZS4303:1990, clause G4 Ventilation of the New Zealand Building Code, and clause E3 of the New Zealand Building Code were summarised to provide context for how New Zealand buildings are designed. Measurements taken in houses throughout New Zealand by BRANZ as part of the House Condition Survey were made available for analysis. This included measurements of relative humidity and temperature. Data from one Dunedin house was thoroughly explored. This involved three objectives. The first step focused on identifying periods of rapid change in the amount of moisture introduced to the indoor environment, measured in absolute humidity. These periods were named 'moisture events'. The second objective was to visually communicate the changes in temperature and absolute humidity taking place on individual days, highlighting moisture events. The third objective was to analyse the identified moisture events, finding the key areas to focus on for the full analysis as well as areas that could be explored in further research. This process was then applied to all remaining houses. Moisture events were grouped into four categories: increases, decreases, episodes, and combinations. Episodes were the focus of the analysis, representing moisture being actively introduced to the indoor environment and then removed. These categories were further filtered, identifying the moisture events were most likely to have had a large impact on the indoor environment. Days were broken into four hour periods, with the filtered moisture events taking place in each period recorded. These were used to identify patterns in moisture events for each house. If a certain pattern of moisture events frequently took place, then days containing that pattern were described as

In this paper the design of an automated measuring system to study and characterize different fabrics in terms of breathability is presented. This system came as a solution to the actual problem in the fabric industry regarding the measurement of breathability. Currently the systems used are not automated, expensive and slow, and the few automated systems used do not often recreate the real sweating conditions. That leads to breathability results that do not match the real performance of the fabrics. This paper presents a system that simulates better the human perspiration. A low-cost system based in Arduino was built and Matlab models were extracted and used to finely tune the PIDs that control the parameters. The software was designed to provide an user friendly operation and to calculate the breathability expressed in commonly used units. This system was proved to be an 80% faster than the current systems in the market, providing a good instrument to perform further studies of different kind of fabrics., Postprint (published version)

In this paper the design of an automated measuring system to study and characterize different fabrics in terms of breathability is presented. This system came as a solution to the actual problem in the fabric industry regarding the measurement of breathability. Currently the systems used are not automated, expensive and slow, and the few automated systems used do not often recreate the real sweating conditions. That leads to breathability results that do not match the real performance of the fabrics. This paper presents a system that simulates better the human perspiration. A low-cost system based in Arduino was built and Matlab models were extracted and used to finely tune the PIDs that control the parameters. The software was designed to provide an user friendly operation and to calculate the breathability expressed in commonly used units. This system was proved to be an 80% faster than the current systems in the market, providing a good instrument to perform further studies of different kind of fabrics., Postprint (published version)

В статті обґрунтовано доцільність та наведено методику експериментальних досліджень з визначення міцнісних властивостей компонентів для дражирування насіння, встановлено залежності модуля Юнга та максимальної відносної деформації зразків з суміші бентоніту та гумату від її кількісного складу та абсолютної вологості, перевірено їх адекватність. The expediency and the experimental research methodology for strength properties determination of components for seeds pelleting, the dependences of the Young modulus and the maximum relative deformation of samples from a mixture of bentonite and humate on its composition and absolute humidity, checked their adequacy are informed in the article. It is established that pelleted seeds rationally be made from several layers: the outer, it is advisable to form out of 100% bentonite, because it has the maximum strength of 6.0•108 ... of 6.5•108 Pa at a moisture content close to your natural and significantly reduces the strength of 2.5•108 ... of 3.0•108 Pa at the increase of soil moisture. The dependences of the elastic modulus and the maximum relative elastic deformation of the mixture of bentonite and humate from humidity and quantitative composition is useful for discrete dynamic modeling pelleted seed.

В статті обґрунтовано доцільність та наведено методику експериментальних досліджень з визначення міцнісних властивостей компонентів для дражирування насіння, встановлено залежності модуля Юнга та максимальної відносної деформації зразків з суміші бентоніту та гумату від її кількісного складу та абсолютної вологості, перевірено їх адекватність. The expediency and the experimental research methodology for strength properties determination of components for seeds pelleting, the dependences of the Young modulus and the maximum relative deformation of samples from a mixture of bentonite and humate on its composition and absolute humidity, checked their adequacy are informed in the article. It is established that pelleted seeds rationally be made from several layers: the outer, it is advisable to form out of 100% bentonite, because it has the maximum strength of 6.0•108 ... of 6.5•108 Pa at a moisture content close to your natural and significantly reduces the strength of 2.5•108 ... of 3.0•108 Pa at the increase of soil moisture. The dependences of the elastic modulus and the maximum relative elastic deformation of the mixture of bentonite and humate from humidity and quantitative composition is useful for discrete dynamic modeling pelleted seed.

В статті обґрунтовано доцільність та наведено методику експериментальних досліджень з визначення міцнісних властивостей компонентів для дражирування насіння, встановлено залежності модуля Юнга та максимальної відносної деформації зразків з суміші бентоніту та гумату від її кількісного складу та абсолютної вологості, перевірено їх адекватність. The expediency and the experimental research methodology for strength properties determination of components for seeds pelleting, the dependences of the Young modulus and the maximum relative deformation of samples from a mixture of bentonite and humate on its composition and absolute humidity, checked their adequacy are informed in the article. It is established that pelleted seeds rationally be made from several layers: the outer, it is advisable to form out of 100% bentonite, because it has the maximum strength of 6.0•108 ... of 6.5•108 Pa at a moisture content close to your natural and significantly reduces the strength of 2.5•108 ... of 3.0•108 Pa at the increase of soil moisture. The dependences of the elastic modulus and the maximum relative elastic deformation of the mixture of bentonite and humate from humidity and quantitative composition is useful for discrete dynamic modeling pelleted seed.

This paper deals with applying the ideal gas equation of state to a multicomponent gas; a couple of expressions for the mole fraction as well as for the mole ratio should be first obtained (these expressions should be in function of key variables other than the number of moles, such as pressure, and volume). Subsequently, some examples of the way in which those equations can be applied when computing psychrometric variables are given., En el presente artículo se discute la aplicación de la ecuación de estado de los gases ideales a un gas multicomponente, para lo cual deben obtenerse previamente sendas expresiones para la fracción molar y el cociente molar del componente i de la mezcla, en términos diferentes a una simple división entre números de moles; se hace necesario involucrar otras variables claves tales como la presión y el volumen. Subsiguientemente se dan ejemplos de la forma en la cual se pueden aplicar dichas relaciones para los cálculos psicrométricos.

This paper deals with applying the ideal gas equation of state to a multicomponent gas; a couple of expressions for the mole fraction as well as for the mole ratio should be first obtained (these expressions should be in function of key variables other than the number of moles, such as pressure, and volume). Subsequently, some examples of the way in which those equations can be applied when computing psychrometric variables are given., En el presente artículo se discute la aplicación de la ecuación de estado de los gases ideales a un gas multicomponente, para lo cual deben obtenerse previamente sendas expresiones para la fracción molar y el cociente molar del componente i de la mezcla, en términos diferentes a una simple división entre números de moles; se hace necesario involucrar otras variables claves tales como la presión y el volumen. Subsiguientemente se dan ejemplos de la forma en la cual se pueden aplicar dichas relaciones para los cálculos psicrométricos.

This report investigates the accuracy to which observations of meteorological parameters can be interpolated to a grid. The interpolation accuracy defines the accuracy that a Tactical Decision Aid (TDA) can achieve. Observations of temperature, relative humidity, windspeed, and wind direction were interpolated to a grid from a set of very carefully chosen observation stations. Hypothetical chemical spill sites were selected at five different observation points. Six different experiments were performed in which meteorological parameters were compared between observations at the hypothetical spill sites and values from nearby, interpolated grid points. Variations in the observed meteorological parameters caused by interpolation inaccuracies were applied to a heat stress casualty TDA. Sensitivity studies were performed to show the amount of variability in the TDA output.

A tentative estimate of the distribution of the absolute humidity during fog in Central Europe is given via the frequency distribution of the temperature, assuming 100% relative humidity. Only the morning hours were examined for 10 stations. It was learned that 7.5 g/cu meter is exceeded in only one-third of the cases, of which 80% occur in summer and fall. An absolute humidity higher than 9.4 g/cu meter is encountered in 7% of the fog cases in spring and 18% in fall. Fall contributed 45% to the annual fog occurrence. While the threshold of 9.4 g/cu meter is exceeded in two-thirds of the summer cases, the total contribution from summer fogs to the entire number of fogs during the year is only 15%. The frequency distribution of the absolute humidity during fog is exhibited and can be converted to visual range for electro-optical systems when the functional relationship absolute humidity-electro-optical system is known. (Author)

In AD-a045 247, a set of equations was developed which permits one to calculate acquisition, classification and identification ranges for ship targets when viewed by an airborne forward looking infrared (FLIR) imaging device. In performing such calculations, one of the crucial factors is the attentuation by the intervening atmosphere of the infrared radiation emitted by the target and received by the sensor. Atmospheric water vapor, whose concentration is quite variable over time and place, is a principal absorber of infrared radiation over the spectral range of interest. The present report provides, in the forms of histograms and graphs, percent frequencies of occurrence and cumulative percent frequencies of occurrence, respectively of the various concentrations of atmospheric water vapor for each of 21 maritime sites throughout the northern hemisphere over the entire year. Similar data representing a composite over all 21 sites are also given. These data serve as inputs to the mathematical model., See also AD-A045 247.

Tato bakalářská práce se zabývá problematikou měření vlhkosti vzduchu. Jsou zde popsány základní vzorce vztahující se k vlhkosti vzduchu a podrobný popis jednotlivých metod, které se využívají ve snímačích pro měření vlhkosti vzduchu. Následuje zmínka o problematice měření vlhkosti v pevných látkách. Dále se práce zabývá kalibrací snímačů. V poslední části je popsáno praktické sestrojení obvodu s unifikovaným výstupem, který je závislý na okolní relativní vlhkosti. Mimo jiné je zde uvedeno i praktické měření vlhkosti v průmyslu a problematika s tím spojená., This bachelor work consider with question of measurement of air humidity. Here are the basic theorem, wich have relation to air humidity, and detailed description of methods, wich are used in air humidity sensors. After come note about qestion of measurement humidity in soild substance. Next theme is calibration of sensors. In the last part is describle the structure of electrical network with unificated readout., wich is dependent on surrounding relative air humidity. Obiter work contain practical measurement of humidity in industry and qestions about it.

Tato bakalářská práce se zabývá problematikou měření vlhkosti vzduchu. Jsou zde popsány základní vzorce vztahující se k vlhkosti vzduchu a podrobný popis jednotlivých metod, které se využívají ve snímačích pro měření vlhkosti vzduchu. Následuje zmínka o problematice měření vlhkosti v pevných látkách. Dále se práce zabývá kalibrací snímačů. V poslední části je popsáno praktické sestrojení obvodu s unifikovaným výstupem, který je závislý na okolní relativní vlhkosti. Mimo jiné je zde uvedeno i praktické měření vlhkosti v průmyslu a problematika s tím spojená., This bachelor work consider with question of measurement of air humidity. Here are the basic theorem, wich have relation to air humidity, and detailed description of methods, wich are used in air humidity sensors. After come note about qestion of measurement humidity in soild substance. Next theme is calibration of sensors. In the last part is describle the structure of electrical network with unificated readout., wich is dependent on surrounding relative air humidity. Obiter work contain practical measurement of humidity in industry and qestions about it.

Tato bakalářská práce se zabývá problematikou měření vlhkosti vzduchu. Jsou zde popsány základní vzorce vztahující se k vlhkosti vzduchu a podrobný popis jednotlivých metod, které se využívají ve snímačích pro měření vlhkosti vzduchu. Následuje zmínka o problematice měření vlhkosti v pevných látkách. Dále se práce zabývá kalibrací snímačů. V poslední části je popsáno praktické sestrojení obvodu s unifikovaným výstupem, který je závislý na okolní relativní vlhkosti. Mimo jiné je zde uvedeno i praktické měření vlhkosti v průmyslu a problematika s tím spojená., This bachelor work consider with question of measurement of air humidity. Here are the basic theorem, wich have relation to air humidity, and detailed description of methods, wich are used in air humidity sensors. After come note about qestion of measurement humidity in soild substance. Next theme is calibration of sensors. In the last part is describle the structure of electrical network with unificated readout., wich is dependent on surrounding relative air humidity. Obiter work contain practical measurement of humidity in industry and qestions about it.

Tato bakalářská práce se zabývá problematikou měření vlhkosti vzduchu. Jsou zde popsány základní vzorce vztahující se k vlhkosti vzduchu a podrobný popis jednotlivých metod, které se využívají ve snímačích pro měření vlhkosti vzduchu. Následuje zmínka o problematice měření vlhkosti v pevných látkách. Dále se práce zabývá kalibrací snímačů. V poslední části je popsáno praktické sestrojení obvodu s unifikovaným výstupem, který je závislý na okolní relativní vlhkosti. Mimo jiné je zde uvedeno i praktické měření vlhkosti v průmyslu a problematika s tím spojená., This bachelor work consider with question of measurement of air humidity. Here are the basic theorem, wich have relation to air humidity, and detailed description of methods, wich are used in air humidity sensors. After come note about qestion of measurement humidity in soild substance. Next theme is calibration of sensors. In the last part is describle the structure of electrical network with unificated readout., wich is dependent on surrounding relative air humidity. Obiter work contain practical measurement of humidity in industry and qestions about it.

Tato bakalářská práce se zabývá problematikou měření vlhkosti vzduchu. Jsou zde popsány základní vzorce vztahující se k vlhkosti vzduchu a podrobný popis jednotlivých metod, které se využívají ve snímačích pro měření vlhkosti vzduchu. Následuje zmínka o problematice měření vlhkosti v pevných látkách. Dále se práce zabývá kalibrací snímačů. V poslední části je popsáno praktické sestrojení obvodu s unifikovaným výstupem, který je závislý na okolní relativní vlhkosti. Mimo jiné je zde uvedeno i praktické měření vlhkosti v průmyslu a problematika s tím spojená., This bachelor work consider with question of measurement of air humidity. Here are the basic theorem, wich have relation to air humidity, and detailed description of methods, wich are used in air humidity sensors. After come note about qestion of measurement humidity in soild substance. Next theme is calibration of sensors. In the last part is describle the structure of electrical network with unificated readout., wich is dependent on surrounding relative air humidity. Obiter work contain practical measurement of humidity in industry and qestions about it.

Tato bakalářská práce se zabývá problematikou měření vlhkosti vzduchu. Jsou zde popsány základní vzorce vztahující se k vlhkosti vzduchu a podrobný popis jednotlivých metod, které se využívají ve snímačích pro měření vlhkosti vzduchu. Následuje zmínka o problematice měření vlhkosti v pevných látkách. Dále se práce zabývá kalibrací snímačů. V poslední části je popsáno praktické sestrojení obvodu s unifikovaným výstupem, který je závislý na okolní relativní vlhkosti. Mimo jiné je zde uvedeno i praktické měření vlhkosti v průmyslu a problematika s tím spojená., This bachelor work consider with question of measurement of air humidity. Here are the basic theorem, wich have relation to air humidity, and detailed description of methods, wich are used in air humidity sensors. After come note about qestion of measurement humidity in soild substance. Next theme is calibration of sensors. In the last part is describle the structure of electrical network with unificated readout., wich is dependent on surrounding relative air humidity. Obiter work contain practical measurement of humidity in industry and qestions about it.

Tato bakalářská práce se zabývá problematikou měření vlhkosti vzduchu. Jsou zde popsány základní vzorce vztahující se k vlhkosti vzduchu a podrobný popis jednotlivých metod, které se využívají ve snímačích pro měření vlhkosti vzduchu. Následuje zmínka o problematice měření vlhkosti v pevných látkách. Dále se práce zabývá kalibrací snímačů. V poslední části je popsáno praktické sestrojení obvodu s unifikovaným výstupem, který je závislý na okolní relativní vlhkosti. Mimo jiné je zde uvedeno i praktické měření vlhkosti v průmyslu a problematika s tím spojená., This bachelor work consider with question of measurement of air humidity. Here are the basic theorem, wich have relation to air humidity, and detailed description of methods, wich are used in air humidity sensors. After come note about qestion of measurement humidity in soild substance. Next theme is calibration of sensors. In the last part is describle the structure of electrical network with unificated readout., wich is dependent on surrounding relative air humidity. Obiter work contain practical measurement of humidity in industry and qestions about it.

Tato bakalářská práce se zabývá problematikou měření vlhkosti vzduchu. Jsou zde popsány základní vzorce vztahující se k vlhkosti vzduchu a podrobný popis jednotlivých metod, které se využívají ve snímačích pro měření vlhkosti vzduchu. Následuje zmínka o problematice měření vlhkosti v pevných látkách. Dále se práce zabývá kalibrací snímačů. V poslední části je popsáno praktické sestrojení obvodu s unifikovaným výstupem, který je závislý na okolní relativní vlhkosti. Mimo jiné je zde uvedeno i praktické měření vlhkosti v průmyslu a problematika s tím spojená., This bachelor work consider with question of measurement of air humidity. Here are the basic theorem, wich have relation to air humidity, and detailed description of methods, wich are used in air humidity sensors. After come note about qestion of measurement humidity in soild substance. Next theme is calibration of sensors. In the last part is describle the structure of electrical network with unificated readout., wich is dependent on surrounding relative air humidity. Obiter work contain practical measurement of humidity in industry and qestions about it.