WY914 Dielectric loss testing deviceDetailed product description：

1 Characteristics
Equipped with WY914 dielectric loss testing device and WY2850 series Q-meter (the best Q-meter is WY2851D or WY2853D) and inductor. Capable of testing the high-frequency dielectric loss tangent and dielectric constant of insulation materials.
2 Working characteristics
2.1 Flat capacitors:
2.1.1 Pole size:
φ25.4mm
2.1.2 Adjustable range and resolution of pole spacing:
≥10mm，±0.01mm
2.2 Cylindrical capacitors:
2.2.1 Linear capacitance:
0.33PF/mm ± 0.05PF.
2.2.2 Adjustable length range and resolution:
0~20mm，±0.01mm
2.3 Fixture plug spacing:
25mm±1mm
2.4 Tangent value of fixture loss angle:
≤ 4 × 10-4 (at 1MHz)
3 Working principle
This testing device consists of two micrometer capacitors. Flat capacitors are generally used to clamp the tested sample. A cylindrical capacitor is a linear variable capacitor with a resolution of up to 0.0033PF. Use a Q-meter as an indicator instrument. The tangent value of the loss angle of insulating materials is obtained by converting the change in Q value of the tested sample when it is placed in a flat capacitor and when it is not placed in the sample, based on the change in the scale reading of the cylindrical capacitor. At the same time, the dielectric constant is calculated by converting the scale reading of the flat capacitor.