Vibration Calibrators
Vibration calibrators are vibration exciters providing a sinusoidal mechanical output at constant frequency and magnitude. They are used to determine the sensitivity of vibration sensors and measuring chains. Metra has been manufacturing vibration calibrators for more than 5 decades. Today we offer a series of devices covering most applications of field calibration. Applications include:
- Test and sensitivity measurement of accelerometers and velocity transducers
- Test and sensitivity measurement of Eddy current probes (VC21D)
- Measurement of frequency response (VC120)
- Function test and fault finding in measuring chains and sensor cable installations
- Evaluation of sensor coupling parts The instruments are battery-powered making them suitable for both field and laboratory use.
Metra’s vibration calibrators are known to be robust and powerful devices. Their outstandingly high payload makes them a good choice for the excitation of heavy objects. Test objects are attached by an M5 threaded hole, by a magnet or adhesively. Metra’s vibration calibrators are supplied with a traceable calibration certificate. DKD calibration can be offered on demand.
Fixed
VC 20
- Strongest Portable Accelerometer Calibrator
- Fixed Frequency at 159.15 Hz (1000 rad/s)
- Fixed RMS Amplitude at 10 m/s2, 10 mm/s, 10 μm
- World’s first portable calibration source for frequencies from 15.92 to 1280 Hz
- Load independent
- Quartz Stabilized frequencies
- Traceable to PTB Standard
Technical Specifications
| Type | VC20 |
| Frequencies | 159.15 Hz (1000 red/s) |
| Acceleration | 10 m/s2 |
| Velocity | 10 mm/s |
| Displacement | 10 μm |
| Accuracy | ±3% at 10 to 40°C; 5% at -10 to 55°C |
| Maximum sensor load | 600 gram |
| Sensor Mounting | M5 |
| Display | OLED |
| Power Supply | Built-in rechargeable battery with external Mains Adaptor (Charger) |
Last Updated on January 21, 2026 by Invicom Webmaster
