Ultrasonic Impedance Analyzer

Product introduction:

This instrument is mainly used for the impedance analysis and parameter calculation of piezoelectric devices.

Piezoelectric ceramics is a kind of crystal material, under the action of AC voltage, can produce telescopic vibration, thus issuing a sound, this phenomenon is called piezoelectric effect in physics, the piezoelectric effect of ceramics is called piezoelectric ceramics. On the contrary, when it is subjected to mechanical pressure, even if the pressure is as small as the vibration of an acoustic wave, the crystal changes shape, such as stretching. As the shape changes, the two sides of the crystal create different electric charges.

Piezoelectric transducers composed of piezoelectric ceramics have become the main means of generating and receiving sound.

Before using piezoelectric devices, need to know the main parameters, mainly including: resonance frequency Fs, anti-resonant frequency Fa, half power point of F1 and F2, maximum admittance Gmax, electrostatic capacitors C0, dynamic impedance (R1, C1, L1) freedom, capacitance CT, dielectric constant epsilon Keff, mechanical Qm quality factor and electromechanical coupling coefficient, the planar electromechanical coupling coefficient Kp, etc. If the admittance characteristic curve of the piezoelectric device can be measured before the use of the piezoelectric device (admittance is the reciprocal of the impedance), the above required parameters can be analyzed and extracted. Four characteristic curves of piezoelectric devices (admittance characteristic diagram, impedance characteristic diagram, admittance polar coordinate diagram and impedance polar coordinate diagram) can be obtained by using this system. This system can easily save and print the measurement results.

This system combines the hardware and PC software for impedance analysis. The hardware of the system completes the function of impedance measurement, while the PC software completes the function of impedance analysis and parameter extraction.

This instrument is used to guide the detection and use of piezoelectric devices. It is a comprehensive solution for measuring and analyzing piezoelectric devices. It can quickly and conveniently evaluate and test the parameter characteristics of piezoelectric devices used for a variety of purposes.