GuanCe Instruments FTDZ-I Powder Resistivity Tester
| Brand | GuanCe Instruments |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | FTDZ-I |
| Price | USD 2,150 (FOB Beijing) |
Overview
The GuanCe Instruments FTDZ-I Powder Resistivity Tester is a dedicated benchtop instrument engineered for the precise determination of volume resistivity (ρ, in Ω·cm) of granular and powdered materials under controlled compaction conditions. It operates on the four-terminal (Kelvin) DC resistance measurement principle, eliminating lead and contact resistance errors to ensure traceable, reproducible results. Unlike bulk solid or thin-film measurements, powder resistivity is intrinsically dependent on particle morphology, interparticle contact area, packing density, and applied compaction pressure—factors explicitly addressed by the FTDZ-I’s integrated pressure-controlled test fixture. The system complies with standardized test protocols defined in ASTM D3764 (for carbonaceous materials), ISO 18513:2021 (powder electrical characterization), and Chinese national standards GB/T 24525–2009, GB/T 24521–2009, and YS/T 587.6–2006—ensuring data compatibility across R&D labs, QC departments, and third-party certification bodies.
Key Features
- Four-wire DC resistance measurement architecture with automatic offset compensation and thermal EMF suppression
- Integrated programmable hydraulic/pneumatic compaction unit delivering calibrated axial pressures from 0.1 MPa to 5.0 MPa (adjustable in 0.1 MPa increments)
- High-stability constant-current source (10 µA–100 mA range, ±0.05% accuracy) paired with a 6½-digit digital nanovoltmeter (resolution: 10 nV)
- Capacitive touch interface with intuitive GUI supporting multi-step test sequences, real-time curve plotting, and on-screen statistical analysis (mean, SD, CV%)
- Modular test cell design accommodating standard 13 mm and 25 mm diameter die sets; interchangeable electrodes with gold-plated stainless-steel contacts
- Embedded thermal drift compensation algorithm and auto-zeroing during idle intervals to maintain long-term baseline stability
Sample Compatibility & Compliance
The FTDZ-I is validated for use with conductive, semiconductive, and moderately insulating powders—including calcined petroleum coke, graphite powders, acetylene black, metal oxide precursors, battery cathode/anode blends (e.g., LiCoO₂, Si/C composites), and refractory carbides. Sample mass is automatically recorded via optional integrated analytical balance interface (0.1 mg resolution). All test procedures adhere to GLP documentation requirements: each measurement logs timestamp, operator ID, pressure setpoint, current/voltage values, temperature (via embedded Pt100 sensor), and raw digitized waveforms. Audit trails comply with FDA 21 CFR Part 11 when used with optional secure user authentication and electronic signature modules.
Software & Data Management
The embedded firmware supports USB export of CSV-formatted datasets containing all raw and derived parameters (resistivity, conductivity, geometric correction factor). Optional PC software (Windows 10/11 compatible) provides advanced features: batch report generation per ISO/IEC 17025 templates, trend analysis across multiple lots, comparative overlay of density-resistivity curves, and automated pass/fail evaluation against user-defined specification limits. Data files include embedded metadata compliant with ASTM E1447–22 (electronic record integrity) and support direct import into LIMS platforms via ODBC drivers.
Applications
- Quality control of anode/cathode active materials in lithium-ion battery manufacturing
- Process validation of graphitization and heat-treatment steps for synthetic graphite powders
- Raw material acceptance testing for aluminum smelting anodes (prebaked and Söderberg types)
- R&D screening of conductive filler dispersion efficiency in polymer composites
- Correlation studies between powder resistivity, BET surface area, and tap density in pharmaceutical excipient characterization
- Calibration verification of in-line resistivity sensors deployed in pneumatic conveying systems
FAQ
What standards does the FTDZ-I directly support?
It implements test methodologies specified in GB/T 24525–2009, GB/T 24521–2009, YS/T 587.6–2006, and is functionally aligned with ASTM D3764 and ISO 18513.
Can the instrument measure resistivity at variable temperatures?
Yes—the optional environmental chamber accessory (−20 °C to +120 °C, ±0.5 °C uniformity) integrates seamlessly with the pressure and measurement control loop.
Is calibration traceable to national metrology institutes?
All electrical modules are factory-calibrated using NIST-traceable shunts and voltage references; full calibration certificates (ISO/IEC 17025 accredited) are available upon request.
How is sample height measured during compaction?
A non-contact LVDT transducer continuously monitors die displacement with 0.1 µm resolution, enabling real-time calculation of bulk density and geometric correction factors.
Does the system support GMP-compliant electronic records?
When configured with the optional audit trail module and role-based access control, it satisfies ALCOA+ principles and supports 21 CFR Part 11 compliance for regulated environments.
