Means of measuring vibration, a licensed training center

For measure vibration parameters apply kinematic measurement method and dynamic.

With using the first method, sample point coordinates of the equipment relative to the selected coordinate system (system fixed). Based on this measuring method the device are converters the relative vibration.

Using the second method to measure the vibration parameters for the artificial report system (system is stationary) inertial element (in General) which communicates with the unit via the elastic suspension. Such Converter are instruments of absolute vibration (seismic systems).

The basis measuring vibration converters are physical principles of conversion in the Electrosignal mechanical vibrations.

Converters absolute vibration

They are divided into 2 types: the generator and parametric.

To generator include:

· Piezoelectric device;

· Induction devices;

· Devices based on the Hall effect.

To parametric converters are:

· Piezoresistive and resistive;

· Transformer and inductive;

· Capacitive and magnetoelastic;

· Vibration-frequency, and electro-mechanical;

· Maximum contact.

Contactless device relative vibration

They divided into the following types:

· Optical and radiation;

· Acoustic and electromagnetic;

· Radio and magnetic.

Specified above the kinematic method of measuring the relative vibration is implemented in contactless gauges. The most popular nondestructive testing methods and means of measurement of vibration parameters of vibration are optical, subdivided according to the method of allocation of data of the measured parameter, the amplitude and the frequency.

Measurement vibration parameters based on the measured frequency of the radiation quantum an optical generator that is reflected from the investigated object is carried out apparatus based on the use of the Doppler effect.

Converters absolute vibration in Electrosignal divided into 2 classes:

· Generator. They convert the Electrosignal the energy of mechanical vibrations. Often use piezoelectric and electrodynamic transducers;

· Parametric. Devices convert mechanical vibrations in the edit parameters of the circuits. Basically, find the use of capacitive transducers, eddy-current and inductive.

Piezoelectric transducers

It measuring of vibration machinery parts which do not rotate. Advantages of piezoelectric transducers are:

· Relatively low cost;

· Simple design;

· High reliability and metrological parameters;

· Wide range (amplitude and frequency).

Disadvantages - low interference and high output impedance.

Electrodynamic transducers

For frequency range 1 Hz - 2 kHz are used for vibrometry electrodynamic transducers, comprising a magnetic system. In this the system has a gap, where is the coil wire. The system is attached to a the basis of the investigated unit and the coil connected to the seismic mass.

Advantages such vibration sensors:

· Low output impedance;

· A large range of amplitudes;

· Signals can be transmitted over long communication lines.

Our organization BALTECH offers its customers:

· Vibrorate BALTECH VP-3405-2 vibration meter with external vibration sensor with magnet BALTECH VP-3410, vibration tester to diagnosis of rolling bearings BALTECH VP-3450, vibration meter-tachometer "PROTON-Balance-II" with the functions of the balancer, thermometer, phase meter, vibration analyzer for hazardous industries BALTECH VP-3470-Ex (explosion proof version), etc. measuring devices, the corresponding ISO 10816-1-97;

· Services in vibration (vibration monitoring, vibration) and the adjusting rotary dynamic equipment (pumps, compressors, fans, motors, gearboxes, rolling bearings, plain bearings). We have a Department technical service (OTS);

· Training of your personnel in our licensed "Training center qualification and training specialists" where there are training courses on the rules of measurement of the vibration using refrigerators and vibration analyzers (analysers).