Rotating-machine balancing vibrometer / ultrasonic
PBP Optel sp. z o.o.
for rotating-machine balancing
Ultrasonic vibration measurement system
OPVIBR is vibrometer used to study vibrations occurring in many areas of life - in the diagnosis of drives of machinery or measurements of vibration impacting on humans and the vibration, the source of which is a man.
The device provides a non-contact vibration measurement that does not affect at the tested object.
The instrument is used in the research of components of engines , pumps, gears, bearings, fans and other rotating machinery.
Advanced software of vibrometer enables a quick and convenient signal processing.
The frequency range of transmitted wave: 30kHz-800kHz
The amplitude of the transmitted wave: max. 70Vpp
Output voltage range: 0-5V
The frequency range of vibration: 1Hz - 30kHz
The minimum measurable amplitude of the vibration: <1μm pp
OPVibr was created to measure vibration – its frequency and amplitude. The device generates continuous wave with constant amplitude and frequency on analyzed, vibrating surface using piezoelectric transducer. Reflected wave has modulated frequency and phase – deviation of frequency and phase contains information about movement of analyzed object. This signal is received by another, isolated transducer and then, OPVibr amplifies and demodulates it.
There are two ways of wave modulation:
- Doppler effect:
- Periodic changes of signal phase induced by position change of reflecting surface.
Demodulation is based on comparison of generated and received waves. Identical center-frequency of wave is achieved by using same, stable time base. It also makes measurement precision independent from absolute value of frequency – only jitter is significant.