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  3. Vibration sensors
  4. Low frequency (seismic) vibration sensors
  5. ASC QF-1211 Low Frequency (Seismic) Vibration Sensors

ASC QF-1211 Low Frequency (Seismic) Vibration Sensors

MEMS Capacitive Accelerometer


Key features

• Uniaxial, Biaxial, Triaxial
• MEMS Capacitive
• Measurement Range: ±3 and ±5 g
• Noise Density: <1.2 μg/√Hz
• Frequency Range (±3 dB): DC to 700 Hz


About the ASC QF-1211 Frequency (Seismic) Vibration Sensors

The key components in capacitive accelerometers are high-quality micro-electromechanical systems (MEMS) that feature excellent long-term stability and reliability. This technology enables the measurement of static (DC) and constant accelerations, which can be used to calculate the velocity and displacement of moving objects. Depending on the design of the spring-mass-damping system, however, it is also possible to detect dynamic (AC) accelerations with a bandwidth of up to 700 Hz (±3 dB) and amplitudes up to ±5 g. Other advantages of capacitive accelerometers are their outstanding temperature stability, excellent response behavior and achievable resolution.

 

Key features ASC QF-1211

  • Ultra-low Noise Differential Voltage Output
  • DC Response, Gas-damped
  • High Shock Resistance
  • Excellent Bias and Scale Factor Stability
  • Built-in Self-Test Option
  • Temperature Output

Options ASC QF-1211

  • Customized Cable Length
  • Customized Connector
  • TEDS Module

Applications ASC QF-1211

  • Noise Measurements
  • Reference Measurements
  • Measurement While Drilling
  • Structural Health Monitoring
  • Seismic Sensing

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Technical Specifications

Specification Value
Amplitude non-linearity <0.3 (typ) | <1 (max) % FSO
Measurement range ±3, ±5 g
Noise density 0.7, 1.2 µg/√Hz
Offset (bias) ±10 mV
Operating current consumption 27 ±5 mA
Power supply voltage 5 to 40 V
Scale factor (sensitivity) 900, 540 mV/g