7500A Series Accelerometer

The Model 7500A is a piezoelectric charge mode accelerometer designed for high frequency vibration and shock measurements.

7500A Series Accelerometer

Description: The Model 7500A is a piezoelectric charge mode accelerometer designed for high frequency vibration and shock measurements. The accelerometer incorporates an annular shear mode crystal that provides stable thermal response up to 260°C. The model 7500A is hermetically sealed and features the popular through hole mount installation for use with standard mounting screws.

Features:

  • 260°C Charge Output Accelerometer
  • 20pC/g output, 15kHz Bandwidth
  • ±250g to ±2000g Dynamic Range
  • Hermetically Sealed
  • -73° to 260°C Operating Range
  • Through Hole Mount
  • Annular Shear Mode
  • Isolated Mounting Surface
Parameters
DYNAMIC Notes
Dash Number -20 -13 -7
Sensitivity (pC/g) 20 13 7.0 Typical
Sensitivity (pC/g) 14.5 9.0 5.0 Minimum
Frequency Response (Hz) 2 1-6000 1-10000 1-12000 ±10%
Frequency Response (Hz) 2 0.1-10000 0.1-12000 0.1-15000 ±2dB
Natural Frequency (Hz) 30000 33000 43000
Non-Linearity (%FSO) ±1/1000g ±1/1000g ±1/1000g
Transverse Sensitivity (%) <5 <5 <5
Dynamic Range (g) 1 ±1250 ±2000 ±3500
Shock Limit (g) 10000 10000 10000
ELECTRICAL
Capacitance (pF) 1050 1050 1050 Nominal
Insulation Resistance (MΩ) >100 >100 >100 @50Vdc
Ground Isolation Isolated from Mounting Surface
ENVIRONMENTAL
Temperature Response (%) See Typical Temperature Response Curve
Operating Temperature (°C) -73 to 260
Storage Temperature (°C) -73 to 260
Humidity Hermetically Sealed
PHYSICAL
Sensing Element Ceramic (shear mode)
Case Material Stainless Steel
Electrical Connector 10-32 Coaxial Receptacle
Weight (grams) 10
Mounting Through Hole (#6 insulated cap screw)
Mounting Torque 8 lb-in (1.0 N-m)

1 Operating range over which the accelerometer meets the linearity specifications

2 Low-end response of the accelerometer is a function of its associated electronics.

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