Ultrasonic Products Parameters Impedance Analyzer with Admittance and Logarithmic Diagram

The impedance analyzer is mainly applicable to the measurement of impedance characteristics of various ultrasonic devices, including: piezoelectric ceramics, transducers, ultrasonic cleaners, ultrasonic plastic welding machines, hydroacoustics, magnetostrictive materials, ultrasonic pulverizers, and ultrasonic atomization. , Ultrasonic teeth cleaning, reversing radar, ultrasonic ranging, ultrasonic emulsification, ultrasonic descaling, ultrasonic motors and all other equipment using ultrasound. The characteristics of the impedance analyzer are: easy to use, combination of indicators and graphics, accurate parameters, low price, and strong guidance for production.

The impedance measurement of a piezoelectric device is a prerequisite for the correct use of the device. For a piezoelectric device, its main parameters can be obtained through an impedance analyzer, including: resonance frequency Fs, anti-resonance frequency Fp, half power points F1 and F2, maximum admittance Gmax, static capacitance C0, dynamic reactance R1, dynamic capacitance C1, Dynamic inductance L1, free capacitance CT, free dielectric constant, mechanical quality factor Qm, electromechanical coupling coefficients Keff, Kp, K31, K33, etc., and can draw five kinds of characteristic curves (admittance characteristic diagram, impedance characteristic diagram) of piezoelectric devices , Admittance polar diagram, impedance polar diagram, logarithmic diagram).

Ultrasonic Component Analyzer PV520A A comprehensive solution for the inspection of piezoelectric ultrasonic devices and equipment.
PV520A is a new generation of portable touch screen analyzer.
Its characteristics are as follows:
1. Dimensions are only 24cm * 14cm * (front 5cm and back 10cm) and weigh only 1.95 kg.
  The world's most portable ultrasonic impedance analyzer.
2. Large touch screen, no physical keys required, all parameters and graphics are displayed at once, more intuitive.
3. Super fast test speed, it only takes 5 seconds to test 1000 points at a time.
4. It can also be connected to a computer, and the software is fully compatible with PV70A / 80A.
5. The maximum test frequency can reach 5MHz.

Impedance tester application:
Transducer: The admittance circle diagram should not appear parasitic circles, the resonance frequency should be as close to the design frequency as possible, the dynamic impedance should be low, the quality factor Qm should be close to the design requirements, and the capacitance should match the circuit.

Piezoelectric ceramics: You can directly judge the quality of the device from the admittance circle diagram and logarithmic coordinates. If there are delaminations or cracks in the ceramic plate, the logarithmic curve will appear multi-peak, and the admittance circle diagram will appear multiple Madoka.

Whether the design, processing and assembly of the horn is reasonable or defective can be clearly seen directly on the guide circle chart.

In the production and processing of ultrasonic welding machine, the state of the welding machine is analyzed by the result of the admittance circle, and the problems existing in the welding machine are found through the analysis of parameters and graphics.

Production and processing of ultrasonic cleaning machine: The selection of the vibrator requires its vibration performance to be as consistent as possible (bandwidth, figure of merit, resonance frequency, dynamic impedance). On the admittance circle chart, there should be no parasitic circles as much as possible or near the resonance point. Impedance characteristic analysis and measurement of transducer manufacturing, incoming inspection, bonded transducer, and washing machine can be performed.

The whole machine measurement of the washing machine can calibrate the resonance frequency and static capacitance of the machine in order to match the power supply, and it can analyze its new resonance point, impedance after water injection, capacitance and characteristics of the vibration mode of the whole machine.