SOI Piezoresistive Technology

• Absolute, differential, relative or multi-pressure measurements
• 0.15 to 600bar
• -55°C to 160°C
• Accuracy from 0.2% FS, drift <0.05% FS/yr
• Voltage, current and digital outputs available
• EMI/lightning protection capabilities

Vibrating Cylinder Pressure Sensors

• ‘Best in world’ for accuracy and drift
• Pressure ranges from:
• 130kPa (1.3bar) to 5MPa (50bar) FS
• Temperature Range: -55°C to 125°C
• Accuracy class: 0.01%FS
• Long term drift: <0.005%FS/year typical
• <1ms pressure response time
• 3 x FS over-pressure without affecting calibration
• Typical applications:
• Air Data (ADCs), Air Data Test Sets (ADTS) & Engine Controls (FADEC)
• Highly suitable for RVSM air data systems: ±15ft max at 41,000ft

SOI Piezoresistive Technology

• The 7825 avionics liquid density transducer is a small, light and highly accurate in tank unit, which will provide a continuous measurement of aviation fuel density
• Uses the flight proven Vibrating Cylinder
• Standard on most wide-body aircraft:
  • -Boeing: B747/B757/B767/B777/B787
  • -Airbus: A330/A340
• Measures fuel in the density range 600 to 900 kg/m³ and -55 to 60°C
• Better than 0.4% accuracy including all pressure and temperature effects
• Measurement drift is better than0.01% per year