Vibration Calibrator

Vibration are electromechanical devices that are used for traceable calibration of vibration sensors and vibration meters. Generate a sinusoidal mechanical oscillation signal having a known amplitude and frequency. The vibrating part is usually a round steel pin with internal thread for mounting the specimen. For vibration generating electrodynamic or piezoaktuatorische systems are used. On older devices, the vibration amplitude had to be manually adjusted depending on the mass of the specimen. Vibration modern have a built-in reference vibration sensor and a control loop, whereby the amplitude is kept constant up to a certain Prüflingsmasse. Older models allow the calibration of objects to about 100 g, while current devices operate stably over 500 g.

Vibration are often used for the verification of vibration sensors and vibration meters locally and are therefore usually portable and battery operated.

The most commonly encountered oscillation frequency at 159.2 Hz calibrators is what an angular frequency of 1000 rad / s. Since the sine signals of the oscillation, the oscillating speed and the vibration acceleration is over a factor of each of the angular frequency associated with each other, resulting at this frequency advantageously same numerical values ​​for the amplitudes of the three vibration magnitude. For example corresponds to a vibration acceleration of 10 m / s ² at 159.2 Hz a swing speed of 10 mm / s and a vibration amplitude of 10 microns.

Some devices allow you to choose between several frequencies or durchzustimmen a certain frequency range in small steps. With market conditions, frequencies between 16 Hz and 10 kHz.

Vibration have occasionally also a measuring channel for connecting different types of vibration sensors and a display for reading the sensitivity.