Vibrometer to measure vibration, vibration machines GOST ISO 10816-1-97, vproduct

Vibration this mechanical oscillations of solids. a particular example of rigid bodies are dynamic machines, whose work is necessarily, to a greater or lesser extent, is accompanied vibration. In many cases, vibration of machines is accompanied by a high level noise or excessive heat.

Vibration machines is the vibrational motion of the machine as a whole or its individual nodes. With a significant the vibration levels can occur invalid relative movement of parts or invalid values periodic inertial forces that could lead to the destruction of the structure. In other words, excessive vibration leads to the deterioration of the quality of the machine work and its premature failure.

Like how high human body temperature signals problems with health, and increased machine vibration is a sure sign of "deterioration health" of the machine. Conducting continuous monitoring of vibration level of the machine, to obtain reliable information about its condition and to detect prematurely and to eliminate incipient defects and, as a result, 18% to reduce the cost of repair costs.

Control vibration is performed using special devices - vbroker that determine one or more vibration parameters: displacement velocity or vibration accelerations.

All heating according to the method of measurement are divided into contact and contactless, but in principle the following types:

• optical;

• whorestube;

• induction;

• piezoelectric;

• capacitive and .

Consider briefly the principle of operation of each type vbroker. Work optical vbroker based on the principle of Doppler - the change in wavelength of the reflected signal at the vibration of the investigated surface. The reflected signal is registered by an optical the interferometer is processed by the electronics and get data the vibration parameters. Optical vibration meters have good accuracy and speed, but their main advantage lies in the contactless method the definition of vibration. However, the main drawback of optical vbroker significantly high the price compared to the vibrometer.

In whorestralia vibration meter vibration transducer is an eddy probe in the working area which is located the coil. The coil inductance is served a high frequency signal, which results in the study of conductive the surface eddy currents. The latter, in turn, change the parameters of the resistance itself coil, and the magnitude of these changes is proportional to the size of the gap between the studied surface and the end face of the sensor.

For the principle changes in the characteristics of the electromagnetic field of the sensor coil an electrically conductive work surface and induction heating, in which recorded changes in inductance of the coil depending on the distance from the investigated ferromagnetic surface.

Induction and whorestube heating affordable, have an acceptable accuracy measurement, but can detect only the vibration conductive surface, and being established from them on distance of 3-5 mm.

Piezoelectric the refrigerators, as the name implies, operate on the piezoelectric effect - appearance potential difference at the p sacristani when it is mechanically deformed.

Piezoelectric the sensor is mounted directly on the test surface and constructively is a kind of inertial mass suspended on elastic piezocrystals elements. The vibrations from the sample surface are transmitted to the inertial mass, it tries to maintain the equilibrium position, causing thereby the deformation elastic elements. Signal which corresponds to the magnitude of deformation is recorded and processed by the instrument and is outputted the signal current, charge or voltage.

Relative the disadvantage of piezoelectric vbroker is the need of direct contact the vibration sensor with the test surface, which is not always convenient when solving some production tasks. But, thanks to the small price, good sensitivity, high resolution, reliability and resistance to external influences, high speed of measurements (up to 100 machines per shift), piezoelectric refrigerators are the best tools for vibration control.

Heating for vibration monitoring of rotating machines is to measure the vibration parameters (velocity, displacement or acceleration) in the frequency range from 10 Hz to 1000 Hz. The permissible limits of vibration are regulated by GOST ISO 10816-1-97 Vibration. Condition monitoring of machines based on measurement results vibration on non-rotating parts."

Spending monitoring of rotating machines using vbroker, we can predict further vibration and the timing of future repairs. Moreover, heating can be used to diagnose some defects: rosencrance and imbalance of the shafts, mounting the machine to the Foundation, etc.

Company Baltech is a leading Russian manufacturer vbroker - from the simplest vproduct BALTECH VP-3405 and ending the automated system control of PROTON-1000.

Vproconsole rotary machines using vbarun BALTECH VP-3405 and BALTECH Vibrometer VP-3410 is the most affordable, and with the help of vibrometer-balancer "PROTON-Balance-II" can still