Vibro-Acoustic Calibration System VS-321

Brief Description

Vibration and acoustic transducer calibration system VS-321 is intended for calibration of:

  • vibration sensors and vibrometers;
  • microphones and sound level meters.

The subsystem of vibration sensor calibration enables running a fully automatic vibration sensor calibration using the comparison method.

Type of vibration sensors, which can be calibrated:

  • charge;
  • IEPE;
  • with a voltage output;
  • with TEDS interface.

VS-321 system allows performing calibration of vibration sensors in the working frequency range from 0.5 Hz to 12600 Hz in the acceleration range from 1,0·10-1 to 5,5·102 m/s2.

The subsystem of accelerometer calibration includes VS-301 vibration control system, an amplifier, an electro-dynamic shaker, a reference accelerometer and software.

The subsystem of microphone and sound level meters calibration enables performing fully automatic calibration of:

  • 1, ½ and ¼-inch measuring microphones;
  • : sound level meters.

The subsystem of acoustic calibration includes: VS-301, a reference microphone, a sound calibrator and an actuator.

Technical Features

Frequency range in the mode of acoustic calibration, Hz
20 ÷ 20000
The upper limit of dynamic range in the mode
of acoustic calibration (at 20 µPa), dB
≥ 140
Confidence interval of relative error of microphone
FRF estimation (electrostatic method, P=0,95), dB
Frequency range in the mode of vibration transducer calibration, Hz
0,5 ÷ 12600
Acceleration replication range, m/s2 1,0∙10-1 ÷ 5,5∙102


VisProbe SL software enables running automated calibration of accelerometers, microphones, vibrometers and sound level meters.

Calibration is subdivided into steps, each of which corresponds to one or several parts of the calibration method. The steps can be taken in free order. On completing a step, the measurement data are automatically saved.

During calibration, the program displays the values obtained from the sensors, oscilloscope and the progress of completing each step. When calibration is complete, a report is created based on the user’s pattern.