The energy supply in many countries depends largely on gas turbines, in which oil and gas are burned to generate electricity.

Thus, the efficiency and emissions of these turbines have a significant impact on the environment and are strictly regulated. In order to reduce nitrogen oxide emissions, lean fuel mixtures are increasingly being burned in modern gas turbines. Unfortunately, this type of lean combustion can give rise to self-excited combustion instabilities. These instabilities are a resonant phenomenon, meaning after the first occurrence it becomes a self-reinforcing process that can, at worst, lead to the complete destruction of a turbine. When combustion oscillation occurs, it always reduces turbine efficiency and significantly decreases service life. To prevent this from happening, pressure sensors are used in gas turbine combustion chambers to detect initial combustion instability. At this early stage, the turbine can be adjusted with little effort for smooth and steady combustion. High-performance piezoelectric sensors can even detect a dangerous flameout through a characteristic drop in pressure. Ideally, you could save yourself the implementation of a flame-out monitoring system.

Expert Info

…like our pressure transducer

CP505

This active acceleration compensated pressure transducer is ideal for acceleration sensitivity of only 0.25 mbar/g and an mbar resolution ideal for the continuous monitoring of modern gas turbines. This sensor provides excellent signals even in the hottest environments of up to 700°C. Due to its compact design, it can also be installed under challenging space limitations.