GuanCe GEST-121A.11 Fully Automated Insulation Resistivity Tester
| Brand | GuanCe |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | GEST-121A.11 |
| Price | USD 1,700 (approx.) |
Overview
The GuanCe GEST-121A.11 Fully Automated Insulation Resistivity Tester is an engineered precision instrument designed for the quantitative determination of electrical insulation properties in solid, liquid, and semi-solid materials. It operates on the principle of constant-voltage DC measurement in accordance with standardized test methods including ASTM D257, IEC 62631-3-1, and GB/T 1410–2006. The system measures volume resistivity (ρv, in Ω·m), surface resistivity (ρs, in Ω/sq), and insulation resistance (R, in Ω) across a dynamic range spanning 10⁴ Ω to 2 × 10¹⁶ Ω, with resolution down to 0.01% of full scale. Its core architecture integrates a high-stability DC voltage source (10 V to 1000 V, programmable in 1-V increments), low-noise electrometer circuitry, and a shielded triaxial measurement path to minimize leakage current and electrostatic interference—critical for reliable ultra-high-resistance characterization.
Key Features
- Fully automated measurement sequence: pre-conditioning dwell, voltage application, stabilization monitoring, resistance acquisition, and auto-ranging—all executed without manual intervention
- Integrated electrode management: supports interchangeable guarded three-terminal electrodes per ASTM D257 configurations—including concentric ring (for surface resistivity), parallel plate (for volume resistivity of solids), and liquid cell (for slurries or conductive pastes)
- Intel-based embedded control system: provides deterministic real-time data acquisition, thermal drift compensation, and internal self-calibration routines traceable to NIST-certified standards
- Electrostatic-shielded enclosure with Faraday cage design: reduces ambient EMI/RFI influence and ensures measurement repeatability < ±2% RSD over 24-hour operation
- Compliance-ready data logging: timestamped raw values, applied voltage, temperature/humidity metadata, and operator ID stored in encrypted binary format
Sample Compatibility & Compliance
The GEST-121A.11 accommodates diverse physical forms: rigid and flexible polymer films (≥25 µm thick), elastomeric sheets (e.g., silicone rubber, EPDM), granular powders (via compression die), Newtonian and non-Newtonian liquids (using guarded liquid cells), and viscous pastes (e.g., battery electrode slurries). Sample conditioning follows ISO 291 and ASTM D618 protocols: controlled at 23 °C ± 2 °C and 50% RH ± 5% for ≥4 h prior to testing. All measurements adhere to GLP documentation requirements and support audit trails compliant with FDA 21 CFR Part 11 when paired with optional networked software modules. Test reports include uncertainty budgets calculated per ISO/IEC 17025:2017 Annex A.3.
Software & Data Management
The instrument ships with GuanCe Resistivity Suite v3.2—a Windows-based application supporting local USB or Ethernet connectivity. It enables method template creation (voltage ramp profiles, dwell times, pass/fail thresholds), real-time Lissajous-style stability plots, and batch report generation in PDF/A-1b and CSV formats. Audit logs record all parameter changes, calibration events, and user logins with digital signature capability. Raw data files are structured in HDF5 format for long-term archival integrity and third-party analysis compatibility (e.g., MATLAB, Python pandas). Optional cloud synchronization allows centralized lab-wide data governance under ISO/IEC 27001-aligned infrastructure.
Applications
- Quality assurance of insulating polymers used in aerospace wire coatings and medical device housings
- R&D evaluation of anti-static additives in packaging films and cleanroom garments
- Characterization of ceramic green tapes and printed electronics substrates during sintering development
- Stability monitoring of transformer oils and high-voltage cable compounds per IEC 60296
- Validation of conformal coatings on PCB assemblies under IPC-CC-830B
- Regulatory submission support for UL 746C, EN 60695-2-10, and RoHS-compliant material declarations
FAQ
What voltage ranges are supported for resistivity measurement?
The GEST-121A.11 offers programmable DC test voltages from 10 V to 1000 V in 1-V steps, with automatic polarity reversal for leakage current correction.
Does the system meet international calibration traceability requirements?
Yes—factory calibration is performed using Fluke 8508A reference standards, with certificates traceable to NIST and valid for 12 months; on-site recalibration kits are available.
Can the instrument measure both volume and surface resistivity on the same sample?
Yes, via sequential electrode reconfiguration using the included guarded ring electrode set and software-driven protocol switching.
Is humidity and temperature monitoring integrated?
An optional external sensor module (GEST-ENV-01) provides real-time ambient T/RH logging synchronized with each measurement event.
How is data security enforced during network operation?
All communications use TLS 1.2 encryption; user roles (operator, supervisor, administrator) enforce read/write permissions aligned with ISO 27001 Annex A.9 controls.
