New accelerometers monitor vibration at very high temperatures

The efficient and secure operation of gas turbines relies upon stable combustion processes. These have to comply with increasingly strict regulations, including flexible operation on different fuels and minimal emissions. At the same time, there is an associated risk of unstable combustion processes and pressure pulsations. Reliable and continuous monitoring systems are required to monitor and control these combustion processes.

Kistler's new high-temperature accelerometer is the only accelerometer designed for permanent operation with a lifespan of 3-5 years at temperatures up to 700degC. The patented PiezoStar crystal technology from Kistler used in the new sensor is neither pyroelectric nor does it produce any popcorn effects. As a result, the sensor is highly reliable and generates high-quality signals for the interference-free monitoring of combustion dynamics.

The Swiss-made sensor completes the modular thermoacoustic portfolio from Kistler, including pressure sensors and accelerometers for long-term monitoring of gas turbines and combustion dynamics in high temperature surroundings. Both high temperature sensors from Kistler are certified in accordance with the European ATEX guide- lines for explosion prevention (Ex-nA and Ex-ia).

Go to www.kistler.com for further information about the high-temperature accelerometer.