SV 81 General Purpose Accelerometer 500 mV/g
The epoxy sealed piezoelectric accelerometer model SV 81 is used in the petrochemical, machine tool, and paper industries for monitoring of slow speed agitators, cooling towers, etc.
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The SV 81 incorporates a low-pass filter within the conditioning electronic. This filter attenuates the sensor mechanical resonance and the associated distortion and overload. Annular shear mode is less susceptible to transverse vibrations and better immune to electronic saturation at high frequencies. Low noise electronic and a temperature compensated design gives the accurate result over the complete temperature range.
SV 81 Specification
Performance: | |
| Number of axis | 1 |
| Sensitivity (± 5 %) | 50 mV/(ms-2) ~ 500 mV/g |
| Measurement range | 0.002 ms-2 rmS ÷ 100 ms-2 PEAK |
| Frequency response (by design guideline, ± 3 db) | 0.2 Hz ÷ 3 700 Hz |
| Linearity | ± 1 % |
| Residual noise (1 Hz, 24°C) | 2.4 μg rmS |
| Residual noise (1 Hz to 25 kHz, 24°C) | 25 μg rmS |
| Transverse response sensitivity (20 Hz, 50 m/s2) | < 5 % |
| Resonant frequency | 16 kHz |
Electrical: | |
| Electrical grounding | isolated from machine grounding |
| Isolation (Case to Shield) | > 100 mΩ |
| Capacitance to ground (Nominal) | 70 pF |
| Supply current | 2 mA ÷ 10 mA |
| Supply voltage | 22 V ÷ 28 V |
| Bias voltage | +12 VdC |
| Output impedance (Nominal) | 50 Ω |
| Charge / discharge time constant (start-up time) | < 10 sec. typ. |
Environmental Conditions: | |
| Maximum vibration (shock survival) | 50 000 ms-2 Peak |
| Thermal sensitivity coefficient | 0.1 %/oC F.S. |
| Operating temperature range | from -55 °C to +90 °C |
| Operating temperature range (recommended) | from -10 °C to +50 °C |
| Humidity / Enclosure | IP67, epoxy sealed |
Physical: | |
| Connector | TNC socket, top radially mounted |
| Material housing & connector | Stainless steel |
| Mounting thread | 10-32 uNF 2b |
| Weight | 44 grams |
Accessories: | |
| Mounting stud 10-32 to M5 (included) | |
| SA 27/10-32 | Mounting magnet base (optional) |
| SC 27 | Coil cable TNC plug – TNC plug, 2 meters (optional) |
*Continuous product development and innovation are the policy of our company. Therefore, we reserve the right to change the specifications without prior notice.
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