Differential thermal analysis is the measurement of the difference in temperature between a sample and a reference as heat is applied to the system. This method is sensitive to endothermic and exothermic processes including: phase transitions, dehydration, and decomposition, redox, or solid-state reactions.
Dynamic mechanical analysis (DMA) is an analytical technique, which measures the modulus (stiffness) and damping (energy dissipation) properties of materials as those materials are deformed under periodic (oscillatory) stress. There are several components, which are critical to the design and resultant performance of a dynamic mechanical analyzer. These components are the drive motor (which supplies the sinusoidal deformation force to the sample material), the drive shaft support and guidance system (which transfers the force from the drive motor to the clamps which hold the sample), the displacement sensor (which measures the sample deformation [oscillation amplitude] that occurs under the applied force), the temperature control system (furnace), and the sample clamps.
The thermal conductivity is the quantity of heat transmitted, due to unit temperature gradient, in unit time under steady conditions in a direction normal to a surface of unit area, when the heat transfer is dependent only on the temperature gradient
TGA is the second most commonly used thermal technique. It measures weight changes in a material as a function of temperature (or time) under a controlled atmosphere. Its principal uses include measurement of a material's thermal stability and composition. TGA instruments are routinely used in all phases of research, quality control and production operations.
TMA is a technique used for measuring the dimensional changes in materials as a function of temperature or as a function of time isothermally. Stress can be applied to the sample during the analysis. The technique involves the use of a probe resting on a sample under a positive load. As the sample is heated, cooled or held isothermally, dimensional changes are translated into the linear displacement of the probe. Various probes are available for either penetration or expansion.
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DSC is the most used thermal analysis technique. These calorimeters measure heat flows and temperatures associated with exothermic and endothermic transitions. It is routinely used for investigation, selection, comparison and end-use performance of materials. DSC is used in academic, industrial and government research facilities, as well as quality control and production operations. Material properties that are routinely measured include glass transitions, "cold" crystallization, phase changes, melting, crystallization, product stability, cure / cure kinetics, and oxidative stability.
A calorimeter for the measurement of specific heat capacities or heats of reaction of liquid or gaseous media in a steady state flow through the instrument.
Gas calorimeter, drop calorimeter, heat flux calorimeter, phase transition calorimeter, titration calorimeter.
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The panel uses digital keypads or menus for programming.
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A port, or interface, that can be used for serial communication, in which only one bit is transferred at a time. Examples include RS232, RS422, RS485, USB etc.
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No integral display. Output is read and displayed remotely.
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4-20mA, or any other analog current output. Often called a transmitter. A current is imposed on the output circuit proportional to the measurement. Feedback is used to provide the appropriate current regardless of line noise, impedance, etc. Useful when sending signals long distances.
The ''output'' is a change in state of a switch or an alarm.
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This is the full-required range of ambient operating temperature.
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