The Model 966 Piezoelectric Accelerometer from Columbia Research Laboratories has been particularly developed for the measurement of high frequency, intermediate to high-level shock and vibration. It integrates a hybrid electronic assembly inside a rough, welded, double-wall stainless steel body to improve its functioning in humid and filthy surroundings.
The double-wall and electrically isolated construction of the sensor offer extra isolation from metallic structures, which helps in obtaining precise, wideband shock and vibration data uninterrupted by electrical ground loop currents.
The sensor module has been bonded into the outer stainless-steel body with a high temperature and glass-filled polymer insulator. Low impedance output of 100 ohms or less enables functioning straight into standard readout equipment in the absence of auxiliary signal conditioning.
Also, it has the potential to drive up to 500 ft of shielded cable. Users can consult the factory for customized versions of this sensor.
Image Credit: Columbia Research Laboratories
- Vibration and shock
- Low impedance output
- Sensitivity is 10 mV/g
- Sealed hermetically
- Isolation is done electrically
- Low base strain sensitivity
Specifications
Source: Columbia Research Laboratories
| Transfer / Electrical |
966 |
| Voltage Sensitivity1 |
10 mv/g +/-5% |
| Range |
+/-500 g Peak |
| Frequency Linearity2 |
+/-5% Max, 2 Hz To 10,000 Hz
+/-3% Max, 5 Hz To 7,500 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 |
966 |
| Vibration Limit |
1,000 g Max (Sine) |
| Shock Limit |
2,000 g Max., 50 uSec |
| Temperature Range |
-40 To +250 Deg F (-40 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 |
966 |
| Configuration |
Shear Crystal Mass Assembly |
| Size |
0.500 In. Hex. x 0.880 In. H (12.7 mm Hex x 22.4 mm H) |
| Weight |
0.6 Oz (17 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. Compliance
2 Referenced to Sensitivity @ 100 Hz.
3 Unit is Hermetic Sealed.
Accessories Supplied
- (1) Comes with miniature cable assembly, LNHT-3 Ft.
- (1) Mounting Stud, St. Stl measures around 10-32 x 0.380" L
- (1) Standard calibration data possible
- (1) Hardwood storage case is available
- (1) Provided with the Certificate of Calibration Traceable to N.I.S.T.