Technical Articles

Supplier:

Decagon Devices, Inc.


Decagon Devices, Inc. has published these technical articles:

(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Product and Material Testing)
From this Article:
First Growth was designed to measure the green cover of short, sparse plant canopies. The camera measures the fraction of its field of view that is green. If the camera views a vegetated surface from... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Product and Material Testing)
From this Article:
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... (View Full Article)
(Environmental Sensors)
From this Article:
Decagon's ECH2O EC-5, ECH2O-TE, and 5TE (replaces ECH2O-TE) probes are used in a variety of soil and soil-less media types, some of which require an adjustment to the probe calibration. To help with... (View Full Article)
(Data Acquisition Products)
From this Article:
The ECH2O Check reader is shipped with a factory-supplied calibration that relates the mV output of the ECH2O probe (models EC-1 and ECH2O -10) to the actual volumetric water content (VWC) of the... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Product and Material Testing)
From this Article:
Objective : to study the effect of food sample size ( "one layer" versus "1/2 cup") on water activity determination with the AquaLab 3TE series.... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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,... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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,... (View Full Article)
(Product and Material Testing)
From this Article:
Leaf area index (LAI) is just a single number-a statistical snapshot of a canopy taken at one particular time. But that one number can lead to significant insight, because it can be used to model and... (View Full Article)
(Product and Material Testing)
From this Article:
One would not normally expect there to be a connection between food physics and geotechnical engineering, but there are several. Decagon builds instruments for measuring water activity in foods and... (View Full Article)
(Temperature Sensing)
From this Article:
The measurement method and analysis used by the KD2 thermal properties analyzer to obtain thermal conductivity is based on recommendations of several published standards. While the standards differ in... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Product and Material Testing)
From this Article:
Water activity is defined as the vapor pressure of water in a material divided by the vapor pressure of pure water at the same temperature. It is impossible to measure the vapor pressure of water... (View Full Article)
(Data Acquisition Products)
From this Article:
UMS GmbH (Munich, Germany) designs and manufactures a range of high quality tensiometers for the measurement of soil water tension (water potential). The tensiometer cables are designed for interface... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Product and Material Testing)
From this Article:
The LP80 makes fast, direct measurements of photosynthetically active radiation in canopies. You get instant PAR measurements when you turn it on. You also get a measurement of leaf area index - LAI.... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Temperature Sensing)
From this Article:
The KD2 measures thermal conductivity, resistivity and diffusivity of samples using a single heated needle. The needle contains a heater and a temperature sensor. The temperature of the needle is... (View Full Article)
(Product and Material Testing)
From this Article:
Researchers familiar with commercial water content probes will often ask three questions when approached with a newly developed dielectric sensor: what is the accuracy of the instrument, how does it... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
Researchers familiar with commercial water content probes will often ask three questions when approached with a newly developed dielectric sensor: what is the accuracy of the instrument, how does it... (View Full Article)
(Product and Material Testing)
From this Article:
One factor that may affect the water activity (aw) measurement is the sample preparation procedure. Eliminating or reducing this potential variable will yield more consistent and reliable water... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Temperature Sensing)
From this Article:
Heating and cooling of food is one of the earliest applications of science to foods. A thermal process is applied to any system in which heat energy is transferred to or from the product. The thermal... (View Full Article)
(Temperature Sensing)
From this Article:
In order to test the durability of the Echo Probe wires at low temperatures, a simple procedure was followed. Probes were placed in an ultra-low temperature freezer until they had reached a known... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
The relationship between water activity (aw) and temperature of saturated salt solutions generally follows the following empirical model: ln(aw) = k1/T - k2... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Temperature Sensing)
From this Article:
There is an increasing need for accurate and rapid thermal measurement of food products. Recently, a Dual Needle Heat Pulse (DNHP) probe has been developed with capability to determine simultaneously... (View Full Article)
(Temperature Sensing)
From this Article:
Decagon's KD2 measures the thermal resistivity of materials. These measurements are fast and accurate, but there is a limit to the number of samples that can be tested, and the sampling and testing... (View Full Article)
(Temperature Sensing)
From this Article:
When the vegetation along a stream bank is removed, the solar load on the stream increases. This results in increased stream water temperature. Elevated stream temperatures degrade freshwater... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Temperature Sensing)
From this Article:
The KD2 and KD2 Pro use the transient heated needle to measure thermal properties of solid and fluid media. With this technique, a 30 second heat pulse is applied to a needle, and the temperature... (View Full Article)
(Temperature Sensing)
From this Article:
The earliest processes applied to food by humans involved the heating and cooling of the food. These processes are important for almost all aspects of food preparation, and play a key role in... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
An increasing number of investigators are becoming interested in seed biology with the objective of understanding and controlling the many aspects of seed germination and seedling establishment. The... (View Full Article)
(Humidity and Moisture Sensing)
From this Article:
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... (View Full Article)

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