The Wilcoxon Sensing Technologies 731 series compact seismic accelerometer is designed for long-term, reliable use. It is constructed with 316L stainless steel. The 731-207 features a 10-32 UNF tapped holefor mounting with SF1 stud (included) and a 10-32 coaxial output connector.

The 731A and 731A/P31 system feature a 2-pin, MIL-C-5015 output connector and include a SF7 mounting stud. Both accelerometer styles are hermetically sealed and manufactured in an ISO 9001 facility.The 731-207 is the compact variant with a 10-32 coaxial connector, 10 V/g sensitivity, and 0.2–1,300 Hz (±3 dB) frequency response, ideal for low-frequency seismic measurements in space-constrained installations. The 731A features a MIL-C-5015 2-pin connector with ultra-low-noise electronics extending the low end to 0.05 Hz. For maximum flexibility, the 731A/P31 system pairs the 731A sensor with a P31 power amplifier offering selectable outputs of 10 V/g, 100 V/g, or velocity mode—suitable for long cable runs and low-level vibration analysis.

Features

• Sensitivity:
  • 731-207, 731A: 10V/g
  • 731A/P31 system: 10, 100, 100V/g selectable
• 0.5g peak acceleration range
• Frequency response:
  • 731-207:
    • ±5%: 0.6 to 650Hz
    • ±10%: 0.5 to 850Hz
    • ±3 dB: 0.2 to 1,300Hz
  • 731A:
    • ±10%: 0.1 to 300Hz
    • ±3 dB: 0.05 to 450Hz
  • 731A/P31 system:
    • 100Hz:
      • -10%: 0.08 to 70Hz
      • -3 dB: 0.05 to 100Hz
    • 450Hz:
      • -10%: 0.08 to 300Hz
      • -3 dB: 0.05 to 450Hz
    • velocity:
      • -3 dB: 0.8 to 150Hz
• Vibration limit:
  • 731-207: 50g peak
  • 731A, 731A/P31 system: fragile
• Output connector:
  • 731-207: 10-32 coaxial
  • 731A: MIL-C-5015, 2-pin
  • 731A/P31: MIL-C-5015, 2-pin and BNC