measure humidity Articles

  • New technologies for measuring the humidity of biomass

    Methods applicable to a great variety of solid biofuels In recent years, systems have sprung up which use near infrared X-ray (NIR) spectroscopy, radio frequency (RF) and microwave spectroscopy as alternatives to the traditional method of measuring humidity by weight difference in the fuel burner. What these methods have in common is that they can be used for a great variety of solid biofuels, ...

  • ´More Stations. More Data. Better Forecasts.´ – the NYS Mesonet

    “More Stations. More Data. Better Forecasts.” – that’s the slogan of New York State Mesonet. The weather observation network consists of a total of 125 weather stations all over the state of New York and Lufft was selected as one of the vendors to support them in capturing the data. All 125 of the weathers stations have the standard instrumentation suite. Of those 125, 17 ...

  • Wind Energy Production Estimates: Moving Beyond Time Averages

    No need to be a statistician to see that averages are often useful to compare different things. And yet, they often fall short as a true measure of performance. For instance, we use averages to compare the current weather against the climate normals or to get a sense of how our favorite sport team or player is doing. Team (player) statistics are a concise way of combining the scores from many ...


    By AWS Truepower, LLC

  • 5 Reasons to Use WiFi Temperature/Humidity Monitoring

    Low-Cost Wireless Data Loggers Protect Your Inventory As wireless monitoring and alarming is becoming even more widespread and affordable, many supply and cold chain companies are turning to WiFi-capable devices to monitor their inventories for temperature and humidity. Now CAS DataLoggers can help you save on costs and time ...


    By CAS DATALOGGERS

  • Noise Measurement

    Definitions Threshold and criterion levels The threshold level is the A-weighted sound level at which a personal noise dosimeter begins to integrate noise into a measured exposure. For example, if the threshold level on a sound level meter is set at 80 decibels (dB), it will capture and integrate into the computation of dose all noise in the employee's hearing zone that equals or exceeds 80 dB. ...


  • Stand alone device for monitoring Temperature & Humidity of Server Room/Data Center

    This small data logger is a stand alone temperature & humidity monitor. This works on separate power supply and has a battery back up as well. Salient Features: ...


    By Vacker LLC

  • Do you need to monitor temperature and humidity in controlled environments?

    Look no further. This compact and easy-to-use instrument is ideal for constant monitoring of temperature and humidity measurements in environments where a record of data for traceability is required. It is ideal for use in medical product storage facilities, warehousing and distribution, containers, industrial processes, laboratory environments, museums, and classrooms. With a ...


    By ATP Instrumentation Ltd

  • Performance characteristics of a Thin-film aluminum oxide humidity sensor - Case Study

    Summary A laboratory study was made of the performance of a miniature-size, thin-film aluminum oxide humidily sensor over a range of ambient temperatures from 0°C to 40°C and encompassing humidities from 40 to 78,000 parts per million by volume (ppm-v). Hysteresis and temperature effects of the sensors were obtained from tests performed at ambient temperatures 40°C, 25°C and ...

  • Measuring enthalpy to calculate efficiency

    Summary This application note describes in detail how you can calculate the gain in efficiency of a direct exchange air conditioning system before and after treatment with the SRA. The physics underlying the method are explained. Introduction Air comprises gasses and water moisture. The gasses are mostly nitrogen (78%) and oxygen (21%). The amount of water ...


    By Power Knot LLC

  • Determination of the relative and absolute humidity in Compost piles by differential pectroscopy using Tuneable diode lasers

    The composting of biological waste is an important step towards the establishment of closed cycles of matter. A constantly high quality of the compost is, however, of utmost importance for the deliberate re-introduction of compost into the environment. The quality of the compost produced is determined by a very complex biological process during which the organic wastes are converted with the aid ...


    By ORBIT e.V.

  • Evaluation of AnnAGNPS and its applications in a semi–arid and semi–humid watershed in Northwest China

    The main goal of this study was to evaluate the performance of AnnAGNPS (Annualised Agricultural Non–Point Source Pollution Model) in simulating runoff, sediment loading and nutrient loading in a semi–arid and semi–humid watershed of an area of 1481sq km, located in Northwest China. This model was first calibrated and tested by historic monitoring data and then the validated model was used to ...


    By Inderscience Publishers

  • Stability and accuracy of CIRAS-2 Water Vapor (reference humidity): control option 1

    Summary Rapid large-scale fluctuations of carbon dioxide and water vapor, although unnatural and artificial in the plant world, are desirable attributes for gas exchange systems from a sampling efficiency standpoint. As PP Systems’ benchmark IRGA system for gas exchange and photosynthesis research, CIRAS-2 was designed for and expected to have exceptional response times to ...


    By PP Systems

  • Colour Measurement as a Tool for Monitoring Oil Quality

    This paper takes a look at the many factors known to have a direct or indirect impact on the quality of oil and the diverse range of different measurement devices have been developed for this purpose, such as relative humidity and absolute water content indicators, particle calculators, dielectric sensors, oxidisation indicators (TAN value), viscosity meters and colour analysers. It explains ...


    By Kytola Instruments Oy

  • The Measurement and Prediction of Conditions within Indoor Microenvironments

    Biocontaminants, such as dust mites and microfungi, can live in building habitats with a spatial scale of only a few millimetres. With the recent development of very small size microchip-based sensors, it is now practicable to measure the humidity at different locations within these microenvironments. In the laboratory study described here, sensors were used to measure the conditions in a number ...


    By SAGE Publications

  • Measurement of Circadian Gas Exchange Dynamics in Arabidopsis thaliana

    Dr. Alex Webb and Dr. Antony Dodd (Cambridge University (UK), Department of Plant Sciences) and PP Systems have developed a unique gas exchange system for use with Arabidopsis. The custom system is being used as part of a program to dissect the architecture of the signal transduction networks that regulate circadian rhythms of stomatal aperture and photosynthesis. Since this is being addressed ...


    By PP Systems

  • A marked improvement in the reliability of the measurement of trace moisture in gases

    Introduction Water is an important substance without which mankind cannot survive. However, it also causes problems such as residual impurity in scientific experiments and in manufacturing processes where a high-vacuum condition or a high-purity gas is required. This is because water is present in the atmosphere in large quantities and therefore can intrude readily everywhere, and can adsorb ...

  • The Fatal Flaw in Dew Point Measurement for Injection Molding

    Dew-point measurement is a common and important metric in the plastic drying process. A good dew point meter can tell you whether your dryer is working normally or if it’s in need of repair. Dew point meters do this by measuring the humidity in the air that flows through the dryer. What dew point meters won’t tell you anything about, however, is how much moisture is actually present ...


    By Arizona Instrument LLC

  • Advantages of using the Ecotech three wavelength nephelometer for aerosol measurements

    The measurement of the scattering properties of aerosols is limited by the errors introduced by typical single wavelength integrating nephelometers. These limitations, however, can be reduced by implementing the features of the Ecotech Three Wavelength Integrating Nephelometer. These limitations are predominantly contributed by particle size, relative humidity, Lambertian distribution of the ...


    By Ecotech Pty Ltd

  • Helplessly exposed to nature? How lightning storms can be measured

    Each day, there occur about 1,000 thunderstorms with 4-10 million lightning bolts worldwide. In average, 700 people per year are hit by such light discharges, of which 75% of the hits result in long-term damages. Between three and seven cases end fatal. The risk is particularly high in the open field and is fortunately decreasing. The reason for this is that we stay more often inside in cars and ...

  • Measuring carbon dioxide (CO2) along ocean surfaces case study

    Customer: Confidential Application: A research team needed to study the levels and variations of one of the major greenhouse gases, carbon dioxide (CO2) along the ocean surfaces. The research team required CO2 analysers to be installed in commercial ocean liners to monitor the “dry” level of ...


    By Ecotech Pty Ltd

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