Piezoelectric Accelerometers for Vibration & Shock Measurement

Models 962 and 962A Piezoelectric Accelerometers from Columbia Research Laboratories are specifically developed for the measurement of high frequency, intermediate to high-level shock, and vibration.

They involve a hybrid electronic assembly inside a rough, welded, double-wall stainless steel body to improve functioning in dirty and humid surroundings.

The double-wall and electrically-isolated construction of the sensor offers extra isolation from metallic structures, which helps in obtaining precise, wideband shockand vibration data unspoiled by electrical ground loop currents.

The sensor module has been bonded into the outer stainless-steel body with the help of a high temperature and glass-filled polymer insulator. Impedance output that is 100 ohms or less enables operation directly into standard readout equipment without auxiliary signal conditioning and has the potential to drive up to 500 ft of shielded cable.

Users can consult the factory for the sensor’s customized versions.

Vibration and shock

Low base strain sensitivity

Sensitivity provided up to 10 mV/g

Low impedance output

Sealed hermetically

Isolated electrically

Piezoelectric Accelerometers for Vibration & Shock Measurement

Image Credit: Columbia Research Laboratories

Specifications

Source: Columbia Research Laboratories

Transfer / Electrical	962	962A
Voltage Sensitivity¹	10 mv/g +/-5%
Range	+/-500 g Peak
Frequency Linearity²	+/-5% Max, 2 Hz To 20,000 Hz
Mounted Resonant Frequency	40 KHz, Min.
Transverse Sensitivity	3% Max, Typical
Amplitude Linearity	+/-1.0% (BFSL) / 250 g
Electrical Noise	0.04 g Equiv., Nom.
Avg Temp Coeff of Sensitivity	0.03% / Deg F
Output Bias Voltage	10.25 +/-1 VDC
Output Impedance	100 Ohms Max.
Isolation Resistance	100 M Ohm Min., 50 VDC
Power Requirements	2 To 10 mA DC Constant Current with 18 To 30 VDC Min Compliance

Environmental	962	962A
Vibration Limit	1,000 g Max (Sine)
Shock Limit	2,000 g Max., 50 μSec	10,000 g Max., 50 μSec
Temperature Range	-50 To +250 Deg F(-46 To +121 Deg C)
Humidity³	0 To 100% R.H.
Base Strain Sensitivity	0.02 g/μE Equiv, Typical
Electromagnetic Sensitivity	0.01 g (Equiv / 100 Gauss)
Acoustic Sensitivity	0.05 g RMS (Equiv @ 124 dB SPL)

Physical	962	962A
Configuration	Shear Crystal Mass Assembly
Size	0.500 In. Hex. x 0.545 In. H(12.7 mm Hex x 14 mm H)
Weight	0.46 Oz (13 Gm)
Case Material	18-8 Stainless Steel
Electrical Interface Coaxial	10-32 Thread
Mounting	10-32 Tapped Base

Notes:

¹ At +75 Deg F, 10 g Peak, 100 Hz; Power Supply 2 To 10 mA DC Constant Current with 18 To 30 VDC Min Compliance² Referenced to Sensitivity @ 100 Hz.³ Unit is Hermetic Sealed.

Accessories Supplied

(1) Miniature Cable Assembly, LNHT-3 Ft.

(1) 10-32 x 0.380” L Mounting Stud, St. Stl.

(1) Hardwood Storage Case

(1) Standard Calibration Data

(1) Certificate of Calibration Traceable to N.I.S.T.

标签：Physical Properties Testing Shock and Vibration Test Systems

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