Dielectric constant dielectric loss tester model: GDAT-A

One Key Features:
Hollow resonant cavity is suitable for non-destructive measurement of low dielectric loss materials such as CCL/printed circuit boards, thin films, etc. Printed circuit boards are mainly composed of glass fiber and epoxy resin. The dielectric constant of glass fiber is 5-6, while that of resin is approximately 3. Due to factors such as resin content, hardening degree, and solvent residue, there may be deviations in dielectric properties. Traditional measurement methods are difficult to produce samples, especially for thin film samples (less than 10 mil) with low measurement values,.

II Main technical features:
Dielectric loss and dielectric constant are important physical properties of various ceramics such as electrical ceramics, device ceramics, capacitors, and composite materials. By measuring the dielectric loss tangent tan δ and dielectric constant (ε), various factors affecting dielectric loss and dielectric constant can be further understood, providing a basis for improving material performance; The basic principle of the instrument is to use high-frequency resonance method and provide universal, multi-purpose, and multi range impedance testing. It uses a single-chip computer as the control of the instrument, and the measurement core adopts new technologies such as frequency digital locking, automatic setting of standard frequency test points, automatic search for resonance points, automatic conversion of Q value range, numerical display, etc. It improves the tuning circuit, reduces the residual inductance of the tuning test circuit to the lowest level, and retains the automatic amplitude stabilization technology in the original Q meter, making the new instrument more convenient to use and more accurate in measuring values. The instrument can measure the Q value of high-frequency inductors or resonant circuits, the inductance and distributed capacitance of inductors, the capacitance and loss tangent of capacitors, the high-frequency dielectric loss of electrical materials, the effective parallel and series resistance of high-frequency circuits, and the characteristic impedance of transmission lines under high testing frequency conditions.

III Instrument features:
☆ Simple wiring (two wires for forward connection, one wire can be used for reverse connection), all cables have grounding shielding, so they can be dragged to the ground for measurement of voltage rise and fall, fully automatic measurement, direct reading of results, no need for conversion.
Multiple measurement methods are available, including positive/reverse wiring, internal/external standard capacitors, and internal/external test voltages for measurement. Positive wiring can measure high voltage dielectric loss.
The seismic performance instrument can withstand strong vibrations and bumps during long-distance transportation without damage.
☆ Strong anti-interference ability adopts automatic tracking interference compensation circuit, combining vector operation method with phase shifting method, effectively eliminating the influence of strong electric field interference on measurement, suitable for on-site testing of 500kV and below power stations.
☆ CVT measurement * Self excitation method for measuring CVT function, without the need for any external equipment, can complete the measurement of non removable head CVT. One wiring (three cables, no need to invert), one measurement process (approximately 1 minute), and two final measurement results (dielectric loss and capacitance values of C1 and C2). The measurement process is displayed in Chinese and can monitor the self-excited current value and test voltage (high voltage) value in real time. It can eliminate the influence of leads on testing, and the measurement results are accurate and reliable.
☆ Safety measures
(1) High voltage protection: The test sample can quickly cut off the high voltage output due to short circuit, breakdown or high voltage current fluctuation.
(2) CVT protection: Set the overcurrent point of the self-excited voltage. Once the set current value is exceeded, the instrument will automatically exit the measurement without damaging the equipment.
(3) Grounding detection: The instrument has a grounding detection function and cannot measure voltage when not grounded.
(4) Anti misoperation: With anti misoperation design, it can identify common wiring errors and provide safety alarms.
(5) Prevent "capacitance rise": When measuring large capacity test samples, there will be a "capacitance rise" effect of voltage rise. The instrument can automatically track the output voltage and maintain a constant test voltage.
The VFD display adopts a novel large screen VFD dot matrix display, which can display clearly in both severe winter and summer. The full Chinese operation menu provides various warning messages, which are intuitive and clear, and can be operated without consulting the manual.
The printing instrument is equipped with a micro printer to print and output measurement results and status in Chinese.
The RS232 instrument has an RS232 interface, which facilitates data statistics, processing, and storage when connected to a computer.
☆ Optional communication applications with computers.

4 Main configuration:
a. Test one host;
b. 9 inductors;
c. A set of fixtures
Appendix Typical Test Data of Inductance Group

The above downloaded materials are detailed measurement methods for reference. If you have any questions, please: