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SV 38V Seat Accelerometer

The SV 38V Seat Accelerometer is a triaxial Whole-Body seat accelerometer based on MEMS transducers dedicated to SV 106 instrument for Human Vibration measurements according to ISO 2631-1 requirements both on a seat pad or seat back.

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The built-in TEDS memory stores information about the accelerometer sensitivity that is automatically transferred to the SV 106 vibration analyser helping to avoid configuration errors. By ISO 2631-1, seat accelerometers such as the SV 38V are placed on the operator’s seat, either on the seat backrest or on the seat cushion. The use of an SV 111 vibration calibrator is recommended for in-situ calibration checks. SV 38 is based on MEMS transducers which means it uses less power and is more robust than piezoelectric sensors.

A full ISO 8041 in-situ calibration check for before and after measurement is possible using the SV 111 portable vibration calibrator.

The SV/38V number of axes is 3 (triaxial). At 15.915 Hz, its sensitivity is 50 mV/(m/s2). The measurement range is from 0.01 ms2 RMS to 50 ms2 PEAK in the frequency range of 0.1 Hz to 100 Hz.

Features include:

  • Meets ISO 8041 and ISO 2631-1
  • Dedicated to SV 106
  • Low-power consumption
  • Robust technology
  • TEDS memory
  • Low price

SV 38V Whole-body Triaxial Accelerometer Specification

Performance:
Number of axis3
Sensitivity (± 5 %)50 mV/ms-2 at 15.915 Hz, HP1
Measurement range0.01 ms-2 RMS ÷ 50 ms-2 PEAK
Frequency response0.1 Hz ÷ 125 Hz
Resonant frequency5.5 kHz (MEMS transducer)
Electrical noise< 230 μV RMS, HP1 weighting

Electrical:

Supply current< 5.0 mA
Supply voltage5.2 V ÷ 16 V
Bias voltage2.5 V ± 0.05 V
Output impedance51 Ohms
Charge/discharge time constant30 sec. typ
TEDS memoryinstalled (power supply pin)

Environmental Conditions:

Maximum vibration100 000 ms-2 shock survival for MEMS
Temperature coefficient<+/-0.02 %/°C
Temperaturefrom -10°C to +50°C
Humidityup to 90 % RH, non-condensed

Physical:

Sensing elementMEMS
Cableintegrated 1.4 meters
ConnectorLEMO 5-pin plug (SV 106 compatible)
Dimensions236 mm diameter; thickness from 3.6 mm to 12 mm
Weight550 grams (including cable and cushion)

Accessories:

Calibration adaptorSA 38 (option)

*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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