Dielectric Constant and Loss Tester
Published: 4/16/2025
Benchtop system for automatic measurement of dielectric constant (ε) and dielectric loss tangent (tanδ) of insulating materials at high frequencies. Designed for solid and liquid samples and compliant with GB/T 1409-2006, GB/T 1693-2007, ASTM D150, and IEC 60250.
Product Description
The STD-B Dielectric Constant and Loss Tester integrates a high-frequency Q meter, S916 test fixture, data acquisition with automatic tanδ control, an LKI-1 inductor set, and an optional liquid cup for testing liquid materials. It provides automated search of resonance points and direct readout of frequency, inductance, capacitance, Q value, and tuned components, enabling efficient characterization of dielectric properties across a broad frequency span.
Typical applications include evaluation of insulating materials, ceramics, polymers, and liquids where accurate high-frequency dielectric constant and loss measurements are required for quality control, material development, and compliance testing. The system’s precision mechanics and low-loss fixture design support thin to moderately thick specimens with adjustable electrode spacing and micrometer-resolution thickness control.
Technical Specifications
| Parameter | Specification |
|---|---|
| System Composition | High-frequency Q meter (STD-B), S916 dielectric test fixture (夹具), LKI-1 inductor set (9 pieces), optional liquid cup |
| Standards | GB/T 1409-2006; GB/T 1693-2007; ASTM D150; IEC 60250 |
| Measurement Outputs | tanδ (loss tangent), ε (dielectric constant) |
| Signal Source Type | DDS synthesized |
| Signal Frequency Range | 10 kHz–110 MHz |
| Frequency Coverage Ratio | 11000:1 |
| Signal Frequency Accuracy | 3×10^-5 ±1 digit (6 significant digits) |
| Q Measurement Range | 1–1000 (auto/manual ranging) |
| Q Resolution | 0.1 (4 significant digits) |
| Q Working Error | <5% |
| Sampling Accuracy | 11 bit |
| Inductance Measurement Range | 1 nH–8.4 H |
| Inductance Resolution | 0.1 nH |
| Inductance Measurement Error | <5% |
| Tuning Capacitor (Main) | 30–540 pF |
| Direct Capacitance Measurement Range | 1 pF–2.5 μF |
| Tuning Capacitor Error | ±1 pF or <1%; resolution 0.1 pF |
| Resonance Search | Automatic scanning |
| Q Pass Preset Range | 5–1000 with audio/visual prompt |
| Q Range Switching | Automatic/Manual |
| LCD Displayed Parameters | F, L, C, Q, Lt, Ct |
| Auto Subtraction | Residual/self inductance and test lead inductance |
| Large Capacitance Direct Display | Up to 2.5 μF |
| Dielectric Loss Coefficient Accuracy (Tanδ) | 0.03% |
| Minimum Measurable Dielectric Loss (Tanδ) | 0.01% |
| Dielectric Constant (ε) Accuracy | 0.1% |
| Material Thickness Range | 0.1 mm–10 mm |
| Fixture Model | S916 |
| Fixture Micrometer | 4-digit digital micrometer rod; resolution ≤0.001 mm |
| Fixture Loss Tangent (1 MHz) | ≤4×10^-4 |
| Electrode (Pole Piece) Diameter Requirement | ≥38 mm |
| Electrode Gap Adjustable Range | ≥15 mm |
| Fixture Plug Spacing | 38 mm ±0.01 mm |
| Liquid Cup (Optional) | Diameter 48 mm; depth 7 mm; interchangeable with S916 lower electrode |
| Inductor Set (LKI-1) | 5 mH; 2.5 mH; 1 mH; 250 μH; 100 μH; 25 μH; 10 μH; 2.5 μH; 0.5 μH |
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B6-101, Zhongnan High-Tech Intelligent Manufacturing Industrial Park, No. 10 Shuangma Street, Yuetang District, Xiangtan City, Hunan Province, China
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