Reference Articles 1 - 100 of 107
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Verifying Temperature and Humidity Controls in a Wine Cellar
From: CAS DataLoggersDescription: CAS DataLoggers recently provided the environmental monitoring solution for a homeowner who wanted to check the climate control system installed in his 2-room wine cellar. Accurate temperature ...
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Humidity measurements in H2O2
Description: The use of resistant relative humidity sensors in hydrogen peroxide sterilisation chambers. ...
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Milk Powder Production
Description: Powdered milk information, history, and manufacturing process. ...
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LOD vs Thermogravimetric Analysis
From: Arizona Instrument LLCDescription: Now while thismay look somewhatintimidating, whatit boils down to is a simple analysisthat can be performed using a thermogravimetric analyzerto provide valuable information aboutthe composition of a ...
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Maximizing Power from Biomass
From: Arizona Instrument LLCDescription: A newmethod formoisture and ash analysis has been developed that enables accurate moisture and ash testing. An instrument using thismethod was able to provide realtime results, and final water and ash ...
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Perfect Fit for Lyophilized Moisture Analysis
From: Arizona Instrument LLCDescription: Testing formoisture in lyophilizedmaterials has well documented benefitsto ensuring quality and shelf life. It has been previously demonstrated thatthe Computrac® Vapor Pro® Rx is a ...
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Using Data Loggers to Find Cooler Zones in a Greenhouse
From: CAS DataLoggersDescription: CAS Data Loggers recently provided the environmental data logging solution for a small greenhouse currently cultivating several species of herbs for sale. From his own experience, the owner preferred ...
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Environmental Monitoring in a College Athletic Center
From: CAS DataLoggersDescription: CAS Data Loggers recently provided the environmental datalogger system for a northern state collegiate athletic facility. Administration wanted a temperature and humidity monitoring system for use ...
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Sugar Industry Application Note
Description: As seen above, temperature and humidity measurements are crucial parameters in the sugar industry. Due to its hygroscopic behaviour sugar can resist small changes in humidity and slight temperature ...
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Proving Best Practices in Fruit and Vegetable Transport
From: CAS DataLoggersDescription: Recently CAS DataLoggers provided its Accsense VersaLog Temperature Monitoring and Alarming System to a shipper exporting its temperature-sensitive fruit and vegetables to remote markets. Therefore, ...
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Historical Error Analysis for an EdgeTech Chilled Mirror Hygrometer
From: EdgeTechDescription: Chilled Mirror Hygrometers are primary standards and as such can be made traceable to the National Institute of Standards and Technology (NIST). A primary standard measures a fundamental property, in ...
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The Case for Chilled Mirror Hygrometry
From: EdgeTechDescription: INTRODUCTION TO HUMIDITY MEASUREMENT Often, we wish to know several conditions of the ambient air or other gas. For example, we may need its temperature, pressure, or moisture content. For ...
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Humidity and Temperature Data Loggers Replacing Paper Chart Recorders
Description: Data Loggers have now dominated the scene over the past several years. Data Loggers are typically devices with internal or external sensors such as humidity and temperature where the values are ...
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Beer Brewing
Description: Non dispersive infrared tech-nology relies on the fact that the molecules absorb light (electro-magnetic energy) at spectral regions where the radiated wavelength coin-cides with internal molecular ...
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Cheese Maturing
Description: The purpose of storage is to create the external conditions which are necessary to control the ripening cycle of the cheese as far as possible. For every type of cheese, a specific combination of ...
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Choosing the Proper Equipment for Pharmaceutical Stabililty Room Humidity and Temperature Mapping
Description: Pharmaceutical and Biotechnology companies are under a great deal of pressure to comply with regulatory requirements from the inception of a product to its final destination. These regulations are in ...
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Freeze Drying
Description: Freeze drying involves the removal of water or other solvent from a frozen product by a process called sublimation. Sublimation occurs when a frozen liquid goes directly to the gaseous state without ...
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Laboratory Applications
Description: A laboratory refers to a workplace, especially in the field of natural sciences. It is a facility that provides controlled conditions in which scientific research, experiments, and measuring may be ...
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Museums
Description: The effective safekeeping of a museum collection is assured by providing the perfect environmental conditions protecting against the different agents of deterioration. ...
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Paper Industry
Description: Controlling humidity in the paper industry is essential for many factors. An incorrect level of %ERH in the paper will have the following effects on product and process: Static electricity From time ...
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Pasta Drying
Description: In normal ambient conditions dried pasta keeps a long time without needing any preservatives or particular storage requirements. Moisture and insects are the main concerns, although good packaging and ...
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Timber Drying
Description: Wood is probably one of the oldest building materials on the planet. But before wood can be used as a construction material whether it be a structural support in a building or to manufacture ...
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Tobacco Production
Description: There are many guidelines that need to be followed while manufacturing tobacco products, one of them being ISO 3402:1999 - Tobacco and tobacco products: atmospheres for conditioning and testing. ...
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Wind Turbines
Description: Wind farms can extend over kilometres of land or offshore areas where the climate and the wind speed can vary substantially, especially in hilly areas. Positioning towers only slightly to the left or ...
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Water Quality Monitoring and Testing Using an Environmental Logger
From: CAS DataLoggersDescription: Water disruptions typically occur after a large amount of water has rapidly collected in a catchment area. As a result this water is subject to continual monitoring and testing for factors including ...
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Moisture Measurement as Quality Assurance in High
From: The Kahn CompaniesDescription: High purity gases are used across an enormous range of applications, from carbon dioxide used as a refrigerant gas, to argon used in the production of silicon wafers for the electronics industry. ...
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Use of Optical Hygrometers as Reference Instruments
From: The Kahn CompaniesDescription: For large pharmaceutical manufacturing plants, power plants, and other industrial/process plants which use large quantities of dew point sensors, it is usually more cost effective to calibrate these ...
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Using Optical Hygrometers to Maintain Dryness of
From: The Kahn CompaniesDescription: Many manufacturing processes and operations require closely controlled dry conditions - for example, semiconductor manufacture, battery manufacture, cold storage facilities and pharmaceutical ...
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Monitoring and Recording Soil Moisture Using Wireless Data Collection
From: CAS DataLoggersDescription: CAS DataLoggers recently provided an economical wireless monitoring system for a government organization undertaking an environmental project measuring the moisture content of peat moss soil. The ...
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Monitoring Engine Temperature/Humidity in Storage Using a Modbus Gateway
From: CAS DataLoggersDescription: CAS DataLoggers recently provided the wireless datalogging solution for a customer who needed to monitor replacement engines for temperature and humidity in storage. Whenever they were discovered to ...
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Monitoring and Alarming Water Leaks in a Library Basement
From: CAS DataLoggersDescription: 1:07 PM CAS DataLoggers supplied the monitoring and alarming solution for a library's basement record storage area that required a wireless datalogger to detect when water leaked in during seasonal ...
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Real-Time Monitoring and Alarming Protects Museum Artwork
From: CAS DataLoggersDescription: CAS DataLoggers recently provided the monitoring and alarming solution for a museum housing fragile paintings and other pieces which needed to be protected against excessive illumination and ...
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High Temperatures Spell Trouble for Air Dryers
From: Van Air Systems, Inc.Description: Charles is an owner and founder of Air and Vacuum Process in Houston, Texas. He began his career in the compressed air and gas industry in 1987, working for the Condit Company in Houston and Corpus ...
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Design Principles of Heated Compressed Air Dryers
From: Van Air Systems, Inc.Description: This discussion focuses on the design of Temperature Swing Adsorption (TSA) systems applied to dry compressed air and discusses several TSA designs commonly used. ...
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Assessment of Vaisala Veriteq vLog Validation System Compliance to 21 CFR Part 11 Requirements
From: VaisalaDescription: The 21 CFR Part 11 rule states that the FDA view is that the risks of falsification, misinterpretation, and change (without leaving evidence) within the GMP environment are higher with electronic ...
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How to Avoid (and Respond to) FDA 483s
From: VaisalaDescription: This application note outlines 10 steps towards formulating effective Form 483 responses to offset further agency action. The note also provides several ways to improve quality systems for controlled ...
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Temperature and Humidity Monitoring in Ice Wine Harvesting
From: CAS DataLoggersDescription: CAS DataLoggers recently provided the temperature and humidity monitoring solution for a small winery in Ohio which was waiting for winter temperatures to drop low enough to harvest an acre of grapes ...
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Room Mapping
Description: Temperature and humidity levels that are out of Specifica-tions can cause damage on production material and even on final the product. You can imagine that this is very impor-tant for phar-maceutical ...
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Rotronic Calibration with non-saturated Salt Solutions
Description: Demand for traceable humidity calibration has increased significantly in recent years, but in many developing markets the cost of setting up relative humidity calibration facilities can be ...
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Calibration Application Note
Description: Many metrologists know that when it comes to humidity and temperature calibration that patience is a pre-requisite and any attempts at short cuts will usually result in poor data or worse...an unhappy ...
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Confectionery Industry
Description: Candy is made by dissolving sugar in water or milk to form a syrup, which is boiled until it reaches the desired concentration or starts to caramelise. The type of candy depends on the ingredients and ...
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Humidity in Clean Rooms
Description: A clean room is a manufacturing environment that has a low level of environmental pollutants such as dust, airborne microbes, aerosol particles and chemical vapors. The air inside is cons tant ly rec ...
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Textile Humidification
Description: To get the most out of these high performance spinning, twisting or weaving machines a constant environment and a well-conditioned fibre is crucial! ...
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Water activity in the food industry
Description: Water activity (aw) or equilibrium relative humidity (ERH) measures the water vapour pressure generated by the water present in a hygroscopic product. ...
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Biogas To Energy-From Waste To Watts
From: CAS DataLoggersDescription: PMP Environmental's tapioca starch plant in Sumatra, Indonesia became increasingly concerned about the impact of greenhouse gas emissions and rising energy costs. ...
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Temperature and Humidity Monitoring in a Small Winery
From: CAS DataLoggersDescription: CAS DataLoggers recently provided the data logging solution for a small winery involved in growing, producing and transporting grapes and wine, an extremely temperature- and humidity-sensitive ...
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Application Note: Helmet Visor with Transparent Heater Technology for Defogging (.pdf)
Description: A helmet visor typically does not allow adequate ventilation between the occupant and outside air temperature. As a result, it can fog up or become coated with condensation, especially during critical ...
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Application Note: Thermoset Polymer-based Capacitive Sensors - Measuring 100% RH (Relative Humidity) (.pdf)
Description: Thermoset polymer-based capacitive RH sensors directly detect changes in "relative saturation" as a change in sensor capacitance with fast response, high linearity, low hysteresis and excellent long ...
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Moisture Measurement in SF6 - A Permanent, Environmentally Safe Solution (.pdf)
From: The Kahn CompaniesDescription: Most electric utilities and independent power producers use Sulfur Hexafluoride (SF6) as an arc quenching and insulating gas in high voltage circuit breakers and switchgear installed in their ...
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How to Go from Paper Chart to State of the Art (.pdf)
From: Fluke CalibrationDescription: As a calibration service provider, it's not enough that your work has to be more accurate and completed in less time than ever before - you're also required to maintain meticulous records and satisfy ...
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Determining the -15 Bar (Permanent Wilt) Water Content of Soils with the WP4 (.pdf)
From: Decagon Devices, Inc.Description: A soil moisture characteristic is a relationship between water potential and water content for a soil. Information from a moisture characteristic is frequently used to determine the plant available ...
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AquaSorp Isotherm Generator Method (.pdf)
From: Decagon Devices, Inc.Description: A moisture sorption isotherm for a food product is the relationship between water activity (aw) and moisture content at a given temperature. This relationship is complex and unique for each product ...
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Calibrating ECH2O Soil Moisture Sensors (.pdf)
From: Decagon Devices, Inc.Description: Decagon's ECH2O probes measure the volumetric water content of the soil by measuring the dielectric constant of the soil, which is a strong function of water content. However, not all soils have ...
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Calibration and Characterization of an Improved Low Cost Water Content Sensor (.pdf)
From: Decagon Devices, Inc.Description: Irrigation scheduling in agriculture and turf requires a soil moisture sensor (SMS) that is accurate, reliable, and low-cost. Although there are many SMS on the market, their use is limited because ...
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Classification of Expansive Soils using the WP4 Dewpoint Potentiameter (.pdf)
From: Decagon Devices, Inc.Description: Costly engineering mistakes are likely if expansive tendencies of clays in roadbeds and under building foundations are misjudged. Geotechnical engineers therefore need a reliable and quick method to ...
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Complete Moisture Analysis (.pdf)
From: Decagon Devices, Inc.Description: The importance of water in determining product safety and stability has long been recognized. The ancient natural preserving practices of salting, sugaring, brining, and dehydrating limit the growth ...
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Correcting Temperature Sensitivity of ECH20 Soil Moisture Sensors (.pdf)
From: Decagon Devices, Inc.Description: In many natural and engineered soils, the output of ECH2O soil moisture sensors is sensitive to variations in the soil temperature. The temperature sensitivity is not caused by the ECH2O sensors ...
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ECH2O Dielectric Probes vs Time Domain Reflectometers (TDR) (.pdf)
From: Decagon Devices, Inc.Description: Capacitance and TDR techniques are often grouped together because they both measure the dielectric permittivity of the surrounding medium. In fact, it is not uncommon for individuals to confuse the ...
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Effects of Sample Disturbance on Soil Water Potential Measurements (.pdf)
From: Decagon Devices, Inc.Description: Sample disturbance is often a concern when water potential is measured. Most researchers try to minimize sample disturbance and thereby ensure a more representative measurement. Sample disturbance, ...
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Generating a Soil Moisture Characteristic with the WP4
From: Decagon Devices, Inc.Description: A moisture release curve, also known as a soil moisture characteristic, relates the water potential of a particular soil to its water content. This information is important for describing water ...
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Heat of Sorption Measured Using A Chilled Mirror Dew Point Water Activity Meter (.pdf)
From: Decagon Devices, Inc.Description: Heat of sorption is of interest to food scientists because it determines the temperature dependence of water activity. If one knows the heat of sorption and the water activity at one temperature, ...
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Measurement of Water Activity of Bacon Using a DA 7200 Diode Array High Speed Analysis System (.pdf)
From: Decagon Devices, Inc.Description: Four samples of microwaveable bacon were sent to Decagon Devices and Perten Instruments. Each packaged contained 12 strips of bacon. The purpose of the samples was to test the feasibility of using the ...
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Measuring Leaf Water Potential using the WP4 (.pdf)
From: Decagon Devices, Inc.Description: Leaf water potential measurements are easily and accurately obtained using the chilled mirror dewpoint technique of the WP4. The recommended procedure involves the abrasion of the leaf cuticle to ...
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Measuring Moisture Content Using Water Activity (.pdf)
From: Decagon Devices, Inc.Description: The terms moisture content and water content are often used interchangeably and represent a measure of the quantity of water in a product. Moisture content provides valuable information about yield ...
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Measuring Specific Surface of Soils Using the WP4 (.pdf)
From: Decagon Devices, Inc.Description: The specific surface area of a soil sample is the total surface area contained in a unit mass of soil. Soils with high specific surface areas have high water holding capacities, more adsorption of ...
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Measuring Water Content in Soil-less Media using ECH2O Sensors (.pdf)
From: Decagon Devices, Inc.Description: Since the introduction of the ECH2O soil moisture probe, there has been considerable interest in using them to measure volumetric water content of soil-less media such as potting soils, rockwool, and ...
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Modeling Available Soil Water Content (.pdf)
From: Decagon Devices, Inc.Description: Both the amount and the availability of water in soil is important to plant roots and soil dwelling organisms. To describe the amount of water in the soil we use the term water content. To describe ...
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Moisture Content of Pharm Produts by Water Activity (.pdf)
From: Decagon Devices, Inc.Description: The terms moisture content and water content are often used interchangeably and represent a measure of the quantity of water in a product. Moisture content provides valuable information about yield ...
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Moisture Sorption Isotherm Method (.pdf)
From: Decagon Devices, Inc.Description: The relationship between water activity (aw) and moisture content at a given temperature is called the moisture sorption isotherm. This relationship is complex and unique for each product due to ...
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Pharmaceutical Application for Water Activity (.pdf)
From: Decagon Devices, Inc.Description: Knowledge of the water activity of pharmaceutical solids (proteins, drugs, and excipients) is essential to obtain a solid dosage form with optimal chemical, physical, microbial and shelf-life ...
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Seed Longevity in Storage is Enhanced by Controlling Water Activity (.pdf)
From: Decagon Devices, Inc.Description: Three environmental factors are of fundamental importance in determining the longevity of stored seeds. These are water, temperature, and oxygen. The focus of this application note is water. With ...
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Temperature Dependence of The Water Activity of Saturated Salt Solutions (.pdf)
From: Decagon Devices, Inc.Description: The relationship between water activity (aw) and temperature of saturated salt solutions generally follows the following empirical model: ln(aw) = k1/T - k2 ...
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The Challenges of Measuring Moisture Content (.pdf)
From: Decagon Devices, Inc.Description: Moisture content is a measure of the quantity of water in a product and the terms moisture content and water content are often used interchangeably. Moisture content provides valuable information ...
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Using a DA 7200 Diode Array High Speed Analysis System to Analyze Dried Cranberries (.pdf)
From: Decagon Devices, Inc.Description: Fifteen samples of dried cranberries were sent to Decagon Devices and Perten Instruments. The purpose of the samples was to test the feasibility of using the DA 7200 Diode Array NIR Analysis system to ...
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Using the CSI AM416 or AM16/32 Multiplexers with ECH2O Soil Moisture Sensors (.pdf)
From: Decagon Devices, Inc.Description: Multiplexers are a popular solution for measuring a large number of sensors with a single datalogger. Although conceptually straightforward, care must be taken in wiring the multiplexer to ensure that ...
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Water Activity and Government Regulations (.pdf)
From: Decagon Devices, Inc.Description: The United States has one of the safest food supplies of any country in the world. The FDA's Good Manufacturing Practice Regulations incorporates water activity guidelines in defining food safety ...
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Water Activity and Plastics (.pdf)
From: Decagon Devices, Inc.Description: One of the advantages of plastics is their freedom from attack by ambient moisture conditions. However, in the resin state prior to processing, plastics can absorb moisture. Failure to remove this ...
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Water Activity as an Alternative to Karl Fischer Moisture Testing (.pdf)
From: Decagon Devices, Inc.Description: Water has long been recognized as important in determining product safety and stability. Karl Fischer titration is a widely used analytical method for quantifying water content in a variety of ...
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Water Activity Definition (.pdf)
From: Decagon Devices, Inc.Description: Water activity is derived from fundamental principles of thermodynamics and physical chemistry. As a thermodynamic principle there are requirement in defining water activity that must be met. These ...
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Water Activity for Meat and Poultry Jerky (.pdf)
From: Decagon Devices, Inc.Description: Meat and poultry jerky, a popular snack, is a dried shelf-stable product. Preparation of jerky usually consists of 5 steps, namely: 1) strip preparation, 2) marination, 3) interventions such as acid ...
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Water Activity for Monitoring the Quality of Dried Distillers Grain (.pdf)
From: Decagon Devices, Inc.Description: Dried Distillers Grain with Solubles (DDGS) is a co-product of the grain bioethanol manufacturing process. It is created through a multi-step process. First, the nonfermentable material leftover from ...
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Water Activity Measurement Using the DA7200 Diode Array NIR Analyzer (.pdf)
From: Decagon Devices, Inc.Description: Water Activity is a critical measurement in determining the safety and quality of food products. Accurate instruments that measure water activity in less than 5 minutes are available, however even ...
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Water Activity of Dry and Dehydrated Products (.pdf)
From: Decagon Devices, Inc.Description: Water activity is an important factor affecting the stability of dry and dehydrated products during storage. Dry and dehydrated products have a high level of popularity with today's consumers. Dry ...
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Water Activity Prediction (.pdf)
From: Decagon Devices, Inc.Description: The use of water activity lowering humectants is a powerful way to turn a perishable product into a shelf stable product. There are a wide variety of humectants available and the choice of humectant ...
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Water Activity's Role in Food Quality and Safety (.pdf)
From: Decagon Devices, Inc.Description: The importance of water activity (aw) in food systems cannot be overemphasized. Throughout history water activity in food has been controlled by drying, addition of sugar or salt, and freezing. These ...
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Water Activity: The Key to Pet Food (.pdf)
From: Decagon Devices, Inc.Description: Pet food safety is an important issue in the Pet Food and Feed Industries as a result of several high profile product recalls that have recently occurred. With the anticipation of new government ...
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Water Activity: Why is it Important for Food Safety? (.pdf)
From: Decagon Devices, Inc.Description: The single most important property of water in food systems is the water activity (aw) of food. Throughout history the importance of controlling water in food by drying, freezing or addition of sugar ...
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Wire Splicing and Sealing Technique for Soil Mositure Sensors (.pdf)
From: Decagon Devices, Inc.Description: Employing a durable wire splicing technique is very important when considering the harsh environments the connection must withstand. Strong connections that are sealed from moisture are more likely to ...
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Providing Steam Isolation & Temperature Protection
Description: All pressure transducers installed on steam lines should be isolated from the steam to protect them from damage. A steam pigtail syphon (such as the MODEL PT) may be used for this purpose. ...
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Sensing and Controlling Humidity
Description: In the energy control business it is usually necessary to monitor humidity, as well as temperature. Sensing humidity cannot be done as easily or as accurately as temperature sensing. For example, a ...
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Measuring in High Humidity & Condensing Environments - Warmed Probe Technology (.pdf)
From: VaisalaDescription: Reliable, stable, and accurate humidity measurement in high relative humidity (>85%) and condensing environments has always been next to impossible without specialized technology. High RH and ...
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Measuring Humidity: Breaking the Parts Per Billion Barrier (.pdf)
From: The Kahn CompaniesDescription: Moisture measurement continues to present designers of instrumentation with interesting challenges. For many years the moisture measurement industry has concerned itself principally with humidity ...
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Using Permeation Tubes to Create Trace Concentration Moisture Standards (.pdf)
Description: Moisture standards have traditionally been prepared by techniques which saturate the gas at known conditions. Preparing standards at trace concentrations (low ppm, ppb) requires saturation at ...
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Effective Condensation Control (.doc)
Description: We are all familiar with the risk and inherent food safety danger associated with having liquid moisture droplets form over food products that are being processed for human consumption. No one would ...
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Why Is It "Raining" in My Surgery Suite? (.pdf)
Description: Is it "raining" in your operating rooms? Do you find that there are times throughout the year when the humidity levels are so high in the space that there are droplets of condensate dripping from the ...
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New QC Protocols at Bell Helicopter Rely on Extech Humidity and Temperature Chart Recorder
Description: Headquartered in Fort Worth, Texas, Bell Helicopter Textron is an industry-leading producer of commercial and military, manned and unmanned vertical lift aircraft and the pioneer of the revolutionary ...
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HW4 - Installation in a Multi-User Environment
Description: HW4 v 1.2.2 can be used on a single PC, shared by several users Through the use of HW4 accounts with different rights and password, file encryption and electronic fingerprinting of files, HW4 provides ...
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HW4 - Installation on a Windows 2003 File Server
Description: HW4 v 1.2.2 can be installed on a server, with the following restrictions and requirements: - When an HW4 session is already in progress, any user who starts an additional session is automatically ...
- The Rotronic Humidity Manual
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Conditioning: Is It Really Necessary?
Description: The spectrometer and its associated software are the key elements in digital color communication. This technology has allowed companies around the world to design, specify, and produce in a repeatable ...
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