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Product Details
Product Overview
The HM Instruments HM-QDZ1 volume and surface resistivity tester measures the electrical resistance and resistivity of insulating materials. It combines a shielding chamber, a DC test voltage source and a 7-inch touchscreen in one unit for laboratory material evaluation and quality control.
The specified resistance range is 5 × 10⁴ to 1 × 10¹⁷ Ω. Volume resistance, surface resistance, volume resistivity and surface resistivity are separate test results; resistance error varies with the resistance range as shown below.
Key Features
Measures volume resistance, surface resistance, volume resistivity and surface resistivity.
Integrated picoampere-sensitive current acquisition module for weak-current measurement.
Automatic voltage, range and timing control, with automatic calculation of results.
Seven-inch touchscreen displays voltage, current and resistivity in real time.
Built-in DC high-voltage source with six fixed voltage steps and continuously adjustable settings.
Real-time result printing and separate storage for three measurement modes.
Integrated shielding chamber and main unit, with overcurrent and short-circuit protection.
Applications
Applications include plastics, rubber, films, resins, mica, ceramics, glass, insulating varnishes and other solid insulating materials, as well as powders and liquids. Select the electrode and sample arrangement for the material and test method.
Applications include insulation-material research and quality control, polymer and composite material evaluation, university teaching and research, and electrical-property testing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HM-QDZ1 |
| Resistance range | 5 × 10⁴–1 × 10¹⁷ Ω |
| Resistance error: 5 × 10⁴–1 × 10⁸ Ω | ±1% |
| Resistance error: 1 × 10⁸–1 × 10¹⁰ Ω | ±2% |
| Resistance error: 1 × 10¹⁰–1 × 10¹² Ω | ±5% |
| Resistance error: 1 × 10¹²–1 × 10¹⁷ Ω | ±15–20% |
| DC test voltages | 10 / 50 / 100 / 250 / 500 / 1000 V; continuously adjustable setting also described in the product literature |
| DC voltage accuracy | ±5% |
| Power supply | AC 220 V / 10 A / 50 Hz |
| Power consumption | Approximately 15 W |
| Operating temperature | 0–40 °C |
| Operating humidity | ≤70% |
| Display | 7-inch touchscreen |
| Dimensions | 408 × 322.5 × 287.5 mm |
| Weight | Approximately 9.6 kg |
| Output | Real-time printing of results |
| Storage | Three modes; 18 records per mode; records can be deleted |
| Protection | Overcurrent and short-circuit protection |
| Structure | Integrated shielding chamber and main unit |
Referenced Test Standards
Method references include GB/T 1410-2006, GB/T 31838.2-2019, GB/T 31838.3-2019, GB/T 31838.4-2019 and IEC 62631, with further methods for antistatic textiles, footwear, rubber and related materials. Select the electrode arrangement and sample conditioning required by the chosen test method.
Operation and Support
Select the test mode and voltage, set the timing and relevant sample parameters, and start the automatic measurement. The touchscreen presents the measured electrical values and calculated results. Results can be stored or printed. Follow the instrument manual for sample preparation, connections and safe operation of the high-voltage test source.
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