481 1

481 1

  • Vibration & Shock
  • Sensitivity 60 pC/g
  • Case Grounded
  • BNC Connector
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The Model 481-1 Piezoelectric Accelerometer is unsurpassed for general-purpose test work in adverse environments. This sensor features a BNC top connector and has been utilized extensively in the oil industry.

The internal construction of the piezoelectric seismic system ensures that this unit has no discernible spurious response to mounting torque, body strains, cable vibration, cable whip, pressure variations and most heat transients. The stainless steel housing provides an environmentally rugged unit, while the epoxy seal offers protection against industrial environments. Its grounded case construction provides tight mechanical coupling which yields accurate, wideband shock and vibration data.

At +75 Deg F, 10g Peak, 100Hz; Lower Frequency Limit is Determined by Associated Electronics
Referenced to Sensitivity @ 100 Hz.
With Connector Protected or Sealed, Unit is Epoxy Sealed


Charge Sensitivity 60 +/-10 pC/g
Frequency Linearity +/-5% Max 2 Hz To 5,000 Hz
Resonant Frequency 25 KHz, Min.
Amplitude Linearity +/-1.0% (BFSL) / 500 g
Capacitance 725 +/-60 pF
Insulation Resistance 10,000 M Ohm Min, 50 VDC Test
Isolation Resistance 0 (Case Grounded)
Transverse Sensitivity 5% Max
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