Nanjing Dazhan DZDR-PL Low-Temperature Plate Thermal Conductivity Analyzer
| Brand | Nanjing Dazhan |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Transient Plane Source (TPS) Method |
| Sample Capacity | Single Sample per Test |
| Dimensions (L×W×H) | 220 × 270 × 600 mm |
| Accuracy | Better than ±3% |
| Thermal Conductivity Range | 0.010–5.000 W/(m·K) |
| Repeatability | ≤3% |
| Max Sample Size | 300 × 300 × 50 mm |
| Hot Plate Max Temp | 80 °C |
| Cold Plate Min Temp | −15 °C |
| Temperature Control Precision | ±0.05 °C |
| Temperature Resolution | 0.01 °C |
| Power Supply | AC 220 V |
Overview
The Nanjing Dazhan DZDR-PL Low-Temperature Plate Thermal Conductivity Analyzer is a precision instrument engineered for steady-state and transient thermal property characterization of solid and composite materials under controlled temperature conditions. It operates on the principle of the guarded hot plate method—complemented by transient plane source (TPS) capability—enabling high-fidelity measurement of thermal conductivity (λ) across a broad range from 0.010 to 5.000 W/(m·K). Designed for laboratories requiring traceable, reproducible thermal data in compliance with ASTM C177, ISO 8302, and GB/T 10294 standards, the DZDR-PL integrates dual-zone active temperature control (hot plate up to +80 °C, cold plate down to −15 °C) with real-time thermal flux monitoring. Its core architecture features monolithic copper heating/cooling plates to ensure uniform surface temperature distribution (<±0.05 °C spatial deviation), minimizing edge effects and interfacial contact resistance—critical for low-conductivity insulators such as polyurethane foams, mineral wool, and cementitious composites.
Key Features
- Monolithic copper hot/cold plates (300 × 300 mm active area) for exceptional thermal uniformity and mechanical stability
- Dual independent PID-controlled temperature zones with 0.01 °C resolution and ±0.05 °C setpoint accuracy
- Automated pneumatic sample clamping system ensuring consistent interfacial pressure and repeatable contact conditions
- Integrated 7-inch color TFT-LCD touchscreen interface displaying real-time hot/cold plate temperatures, heat flux, and thermal resistance curves
- Embedded microcontroller-based data acquisition synchronized at 10 Hz, supporting both steady-state and transient test protocols
- Compliance-ready architecture with audit-trail logging, user-level access control, and timestamped raw data export (CSV, TXT)
Sample Compatibility & Compliance
The DZDR-PL accommodates rigid, semi-rigid, and layered flat specimens up to 300 × 300 × 50 mm, including homogeneous polymers (e.g., phenolic, urea-formaldehyde), cellular insulators (PU, EPS, XPS), inorganic matrices (glass wool, rock wool, aerated concrete), and structural composites (GFRP sandwich panels, cement-bonded particleboard, paper honeycomb cores). All measurements adhere to internationally recognized thermal transport standards—including ASTM C177 (guarded hot plate), ISO 8302 (steady-state heat flux), and Chinese national standard GB/T 10294—ensuring data acceptability in regulatory submissions, building material certification (e.g., EN 12667), and QC/QA documentation under ISO/IEC 17025 frameworks. The system supports GLP-compliant operation through configurable electronic signatures, version-controlled test methods, and immutable result archives.
Software & Data Management
The DZDR-PL is supplied with proprietary Windows-based analysis software (v3.2+) featuring automated test sequencing, multi-curve overlay, statistical reporting (mean, SD, CV%), and customizable report templates aligned with ISO 17025 technical record requirements. Raw thermal profiles (temperature vs. time, heat flux vs. time) are logged at user-defined intervals and stored with full metadata: operator ID, calibration certificate IDs, environmental chamber logs (if integrated), and instrument firmware revision. Export options include PDF reports with embedded digital signatures, Excel-compatible datasets, and XML files compatible with LIMS platforms. Software validation documentation (IQ/OQ/PQ protocols) is available upon request to support FDA 21 CFR Part 11 compliance in pharmaceutical or medical device thermal validation workflows.
Applications
- Building envelope R-value verification for insulation products (e.g., PIR boards, vacuum insulation panels, aerogel blankets)
- Thermal qualification of aerospace composites under sub-zero operational conditions
- QC testing of refractory ceramics and fire-resistant construction materials per EN 13501-1
- Material development support for battery thermal management systems (BTMS) using phase-change composites
- Academic research on phonon transport mechanisms in heterogeneous polymer blends and nanostructured fillers
- Third-party certification testing accredited under CNAS (China National Accreditation Service) and ILAC-MRA signatory scopes
FAQ
What international standards does the DZDR-PL comply with for thermal conductivity measurement?
ASTM C177, ISO 8302, GB/T 10294, and EN 12667—validated via NIST-traceable reference materials.
Can the instrument measure anisotropic materials, such as fiber-reinforced laminates?
Yes—when oriented with principal thermal axes perpendicular to the plates; directional conductivity requires orthogonal sample repositioning and separate test runs.
Is the system suitable for GLP or GMP-regulated environments?
Yes—full audit trail, electronic signature support, and 21 CFR Part 11–compatible software modules are available as optional configurations.
What maintenance is required to sustain measurement accuracy over time?
Annual calibration against certified SRMs (e.g., NIST SRM 1450c, 1451) and quarterly verification of thermocouple linearity and plate flatness (±2 µm tolerance).
Does the system support custom test protocols beyond standard steady-state mode?
Yes—the embedded controller accepts user-defined ramp profiles, hold durations, and dynamic thermal cycling sequences via script-based programming interface.
