| The VP20 has been designed to facilitate vibration measurement in the frequency range 0.1 to 350 Hz. Three wide bandwidth piezo electric accelerometers complete with amplifiers and band limiting filters are enclosed within a low profile aluminium case.
The VP20 tri-axial accelerometer uses Lamerholm's patented piezo electric accelerometer technology to provide good low frequency response, low phase error and resistance to rough handling. An additional benefit of this advanced accelerometer technology is its very low noise which allows measurements to span an 86dB dynamic range from 0.0005g to 10g.
Key Features
 |
- 12mm thick, 45mm square
- Frequency response 0.1 Hz to 350 Hz ± 3 dB
- Phase error < 20° from 0.35 Hz to 120 Hz
- Built in amplifiers and filters
- Rugged piezo electric design
- Rugged 7 pole connector
- Sensitivity calibration to ± 2%
- Very low noise
|
Specification
(Operating temperature = 25°C, supply = ±15V DC)
| |
|
Min |
Max |
Units |
| Sensitivity |
|
0.98 |
1.02 |
V/g |
| Low frequency response |
<3dB error |
|
0.1 |
Hz |
| High frequency response |
<3dB error |
350 |
|
Hz |
| Low frequency response |
<0.5dB error |
|
0.25 |
Hz |
| High frequency response |
<0.5dB error |
100 |
|
Hz |
| Low frequency phase response |
<20° error |
|
0.35 |
Hz |
| High frequency phase response |
<20° error |
120 |
|
Hz |
| Low frequency phase response |
<50° error |
|
0.15 |
Hz |
| High frequency phase response |
<50° error |
300 |
|
Hz |
| Operating temperature range |
|
-30 |
+85 |
°C |
| Variation of sensitivity over temperature |
|
-5 |
+5 |
% |
| Maximum acceleration (linear operation) |
|
-10 |
+10 |
g |
| Maximum acceleration (survival) |
|
-100 |
+100 |
g |
| Output DC offset |
|
-0.25 |
+0.25 |
V |
| Noise (0.1 Hz to 350Hz bandwidth) |
|
|
0.0005 |
g RMS |
| Test input gain |
|
0.5 |
1.5 |
g/V |
If you would like to find out more, please contact.
The VP20 accelerometer includes features which are the subject of world wide patents or patent applications. While the information contained in this document is believed to be accurate no responsibility can be accepted for its use, nor for any infringements of patents or other rights of third parties which may result from its use. Lamerholm Electronics reserve the right to modify performance specifications without notice.
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