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High Temperature Pressure Sensors for Turbine Engine Monitoring

In response to market and regulatory pressures, modern power turbine manufacturers have achieved unprecedented decreases in emissions. In particular, NOx emissions have been dramatically reduced through new “lean burn” or “dry low NOx” designs. As is typically the case, these advances have come at a price. The low fuel-to-air ratios of these combustors can result in coupled acoustic and heat release pressure oscillations. Even though the magnitude of these oscillations may be low, even small fluctuations (less than 1 psi) can cause high-cycle fatigue in metal parts downstream of the combustors.

Piezoelectric pressure sensors are best suited for detecting and measuring dynamic pressure phenomena in the presence of high static pressures. Turbine applications are often at 300 psi (2068 kPa) static, with dynamic pressures up to +/- 5 psi (34 kPa); a perfect fit for PCB® sensors.

Series 171

• Sensitivities to 1200 pC/psi
  (174 pC/kPa)
• Ranges from 10 to 600 psi
  (70 to 4140 kPa)
• High temperatures to +500 °F
  (+260 °C)
• Case isolated, rugged,
  2-pin MIL connector

 

 

Series 176

• Sensitivities to 17 pC/psi
  (2.5 pC/kPa)
• Ranges from 20 to 400 psi
  (140 to 2760 kPa)
• High temperatures to
  +1,000 °F (+535 °C)
• Low-noise, in-line differential charge amplifier
• Case isolated

High Temperature Accelerometers for Turbine Engine Monitoring

Innovations in high temperature accelerometer technology allow for vibration measurement in extreme heat environments up to +1200°F (+649°C).

 

Model 600A03 (+500 ˚F/ +260˚C)
Accelerometer Kit

• Kit includes sensor, integral cable,
  & charge converter
• 100 mV/g (10.2 mV/(m/s2)) sensitivity
• 10 & 1000 mV/g options available
  (1.02/102 mV/(m/s2))
• 1 to 10 kHz frequency range

For more information click here

 

Model 600A13 (+900 ˚F/ +482˚C)
Accelerometer Kit

• Kit includes sensor, integral cable, & charge converter
• One piece construction with hermetically sealed integral hardline cable
• 100 mV/g (10.2 mV/(m/s2)) sensitivity
• Option available for 10 m/V/g sensitivity (Model 600A14)

For more information click here

 

 

Model 357C90 (+1200°F/ +649°C)
High Temperature Accelerometer

• Charge output accel, 5 pC/g sensitivity
• Measuring range to 1000 g's peak
• Frequency response of 2.5 kHz
• Resonant frequency over 14 kHz
• Integral 10-ft hardline cable

For more information click here

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Contact us with your next power generation project!

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