Youyunpu YP-QDZ Automated Volume & Surface Resistivity Tester

Overview

The Youyunpu YP-QDZ Automated Volume & Surface Resistivity Tester is a precision-engineered instrument designed for the standardized measurement of electrical insulation properties in accordance with international and national test protocols. It operates on the principle of applying a controlled DC voltage (up to 10 kV) across a specimen while measuring the resulting leakage current through high-impedance electrometers. The system calculates volume resistivity (ρ_v, in Ω·m) and surface resistivity (ρ_s, in Ω/sq) using geometric correction factors defined in ASTM D257 and IEC 60093—principles rigorously implemented in its firmware architecture. Engineered for laboratory, QC, and R&D environments, the YP-QDZ delivers repeatable, traceable results for solid dielectrics (e.g., polymers, ceramics, composites), powders, and liquids—supporting both compliance-driven testing and material development workflows.

Key Features

• Integrated electromagnetic shielding chamber co-located with main unit—reducing ambient noise and ensuring measurement stability per IEC 61000-4-8 immunity requirements
• Touchscreen HMI (7-inch capacitive display) enabling intuitive parameter configuration, real-time curve visualization, and pass/fail threshold setting
• Programmable test voltage range: 10 V to 10,000 V DC, with automatic ramping and dwell control compliant with GB/T 1410–2006 and ASTM D257
• Over-current protection circuitry with short-circuit detection and automatic shutdown—ensuring operator safety and instrument longevity
• Multi-form factor support: accommodates irregularly shaped solids, powder compacts (via custom electrode fixtures), and liquid samples using guarded three-terminal cells
• Onboard thermal drift compensation algorithm calibrated against NIST-traceable reference resistors
• Direct thermal printer interface supporting immediate hardcopy output with timestamp, sample ID, test parameters, and calculated resistivity values

Sample Compatibility & Compliance

The YP-QDZ supports standardized electrode configurations per GB/T 1410–2006 (equivalent to IEC 60093): concentric ring electrodes for surface resistivity; guarded two-electrode or three-electrode systems for volume resistivity. It accommodates specimens up to 200 mm × 200 mm × 50 mm (L×W×H), with optional fixtures available for ASTM D257-compliant cylindrical rods, thin films (<0.1 mm), and granular materials (using ASTM D4496-compliant compression cells). All measurements adhere to GLP principles: full audit trail logging (operator ID, date/time, environmental conditions), electronic signature capability, and data integrity safeguards aligned with FDA 21 CFR Part 11 Annex 11 expectations. Certified conformance includes GB 12014 (ESD workwear), GB/T 20991 (footwear ESD testing), GB/T 12703.4–6 (textile electrostatic evaluation), and GJB 5104–2004 (military-grade static-dissipative coatings).

Software & Data Management

The embedded firmware supports USB mass storage export of CSV/Excel-compatible reports—including raw current vs. time datasets, temperature/humidity metadata, and statistical summaries (mean, SD, CV%). Optional PC-based software (Windows 10/11 compatible) enables advanced analysis: trend charting across batches, comparative resistivity mapping, and automated report generation per ISO/IEC 17025 documentation templates. All data files are digitally signed and checksum-verified to prevent tampering. Audit logs record every parameter change, measurement initiation, and calibration event—retained for ≥12 months with configurable auto-archive to network drives.

Applications

• Quality assurance of polymer insulators used in high-voltage cable jackets and busbar encapsulation
• Development of antistatic packaging films for semiconductor handling (per JIS L 1094)
• Validation of conductive fillers (carbon black, graphene, metal nanowires) in thermoplastic composites
• Regulatory testing of cleanroom garments, ESD flooring, and medical device housings under ISO 14644-1 environmental controls
• Research into humidity-dependent resistivity hysteresis in hydrophilic biopolymers and ion-conductive gels
• Failure analysis of delaminated laminates where interfacial surface resistivity deviation indicates moisture ingress

FAQ

What voltage ranges does the YP-QDZ support for resistivity testing?

The instrument provides programmable DC test voltages from 10 V to 10,000 V in 10-V increments, with selectable ramp rates and hold times per GB/T 1410–2006 Section 6.2.
Does the system meet ISO/IEC 17025 calibration traceability requirements?

Yes—internal calibration routines reference factory-certified 10¹² Ω and 10¹⁴ Ω standards traceable to CNAS-accredited laboratories; external recalibration services include full uncertainty budgets per ILAC-G8.
Can the YP-QDZ measure resistivity of conductive pastes or thick-film inks?

It is optimized for insulative to dissipative materials (10⁴–10¹⁶ Ω·m); for highly conductive formulations (<10³ Ω·m), a four-point probe module (optional accessory) is recommended.
Is GLP-compliant data archiving supported out-of-the-box?

Yes—on-device encrypted storage retains all raw data, operator logs, and environmental readings for ≥12 months; export formats comply with EU Annex 11 ALCOA+ data integrity criteria.
What electrode configurations are included standard?

Standard delivery includes ASTM D257-compliant guarded ring electrodes (diameter 50 mm, guard gap 2 mm), parallel plate electrodes (100 mm diameter), and liquid cell with Pt-black coated electrodes.