A high-temperature pressure sensor is a piezoelectric sensor that is capable of measuring pressures at a constant temperature of up to 700°C (1.300°F). Working as a spring-mass system, typical applications include processes where dynamic pressure pulsations have to be measured and controlled. Thanks to the in-built PiezoStar crystal, a high-temperature pressure sensor withstands temperatures of up to 1000°C (1830°F) in the short term. Through differential technology and in-built acceleration compensation, low noise and high accuracy are achieved. An especially isolated hardline cable designed for very high temperatures connects the sensor with the charge amplifier.
What are high-temperature pressure sensors used for?
High-temperature pressure sensors are applied for measurement and control of dynamic combustion processes, for example in gas turbines and similar thermoacoustic applications. They accurately capture potentially dangerous pressure pulsations and vibrations in order to optimize system operation.
How is the measuring chain for high-temperature pressure sensors built up?
Apart from the sensors themselves, differential charge amplifiers and low-noise hardline and softline cables ensure that a high measurement quality is achieved. Additionally, Ex-certified components are used for application in harsh environments.
What types of high-temperature pressure sensors do exist?
High-temperature pressure sensors are available in a vast variety of versions, among them small and lightweight variants for research and development purposes. Depending on the requirements of a specific application, individual cable lengths and connector types are possible. Furthermore, certified variants (ATEX, IECEx) are applied in hazardous environments.