High Temperature Pressure Transducers
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High Temperature Pressure Transducers

Views:25     Author:Site Editor     Publish Time: 2021-07-15      Origin:Site

High Temperature Pressure Transducers


Transducers generally convert energy from one form to another, although the energy is typically a signal. They are routinely used in automated systems, which are often controlled by measurements of physical quantities such as force, motion, temperature and pressure. A sensor is a specific type of transducer that senses a physical property of its environment and reports that change, typically in the form of an electrical signal. For example, a pressure sensor detects pressure and reports it to a gauge that displays the pressure.

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A high temperature pressure transducer doesn’t contain electronic components, giving it a much higher tolerance for heat than normal pressure transducers. These devices are typically rated for room temperature up to 343°C (649.4°F), depending on the specific model. A quality pressure transducer of this type can provide highly stable measurements at high temperatures. For example, some models can measure pressure with an accuracy of 0.25% and a thermal drift of 0.1% at 38°C (100°F).

The pressure range of a high temperature pressure transducer can vary greatly, from 15 pounds per square inch (psi) to more than 10,000 psi. A calibration record from the National Institute of Standards and Technology (NIST) may be available for these pressure transducers. Manufacturers may also calibrate their transducers at various stages in their lifecycle.

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This high level of performance is possible through the use of thin film technology, which uses sputter deposits to form a molecular bond between the gauge and substrate. This manufacturing technique virtually eliminates changes to the transducer’s calibration, including creep, drift, and shift. High temperature pressure transducers should also have a pressure cavity made of stainless steel and a double-isolated case to ensure integrity of the unit in a harsh operating environment. An all-welded construction will further increase a pressure transducer’s tolerance for physical stress.


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