AM701

Product Description

The AM701 is a high-precision seismic-grade piezoelectric accelerometer featuring an isolated piezoelectric sensing structure that effectively suppresses 

measurement interference caused by transverse vibration, base strain and temperature transients. The device integrates a low-noise solid-state charge 

amplifier with ultra-high measurement sensitivity, enabling accurate detection of ultra-low frequency, micro-amplitude vibration signals.

With a compact design, the accelerometer is suitable for high-precision low-frequency vibration measurement applications in industrial sites, building 

structures, foundations and seismic monitoring. It comes with a dedicated protective storage case to meet field operation and safe storage requirements, 

making it a specialized metrology device for ultra-low frequency vibration calibration and precision vibration detection.

Key Specifications

Electrical Specifications

• Supply Voltage: 18 to 30 VDC

• Sensitivity: 10 V/g

• Frequency Response

• 0.10 to 300 Hz (±10%)

• 0.05 to 480 Hz (±3 dB)

• Resonant Frequency: 780 Hz

• Max Output Impedance: 100 Ω

• Max Shock Resistance: 0.5 g peak

  
  

Physical Specifications                                                                                                                                                                   

• Dimension: Φ62 mm × 73 mm

• Weight: 762 g

  
  

Environmental Specifications:

• Operating Temperature: -20 °C to +70 °C

• Operating Humidity: 5% to 95% RH, non-condensing

  
  

Hazardous Area Approvals:

•  ATEX: 

             II 1G Ex ia IIC T4 Ga

             II 2G Ex db IIC T4 Gb

             II 2D Ex ib IIIC T130 °C Db

              （-40 °C to +80 °C）

• CNEx:       

        Ex ia IIC T6 Ga

        Ex ib IIIC T80 °C Db

• CSA/NRTL/C:

              Ex ia IIC T4

              AEx ia IIC T4

              Class I Division 1, Groups A,B,C,D

              Class II Groups E,F,G; Class III

              T4 @ -40 °C ≤ Ta ≤ +100 °C