Xiatech TC3100L Low-Temperature High-Pressure Liquid Thermal Conductivity Analyzer
| Brand | Xiatech |
|---|---|
| Origin | Shaanxi, China |
| Model | TC3100L Low-Temperature Liquid Type |
| Measurement Principle | Transient Hot-Wire Method |
| Temperature Range | −30 °C to 100 °C |
| Pressure Range | 0.1–15 MPa |
| Thermal Conductivity Range | 0.0005–5 W/(m·K) |
| Accuracy | ±2 % |
| Repeatability | ±2 % |
| Sample Form | Liquid |
| Sample Throughput | Single sample per test |
| Test Atmosphere | High-pressure inert or controlled gas environment |
| Dimensions (L×W×H) | 50 cm × 50 cm × 70 cm |
| Measurement Time | ≤2 s |
Overview
The Xiatech TC3100L Low-Temperature High-Pressure Liquid Thermal Conductivity Analyzer is an engineered solution for precise, traceable thermal conductivity measurement of liquids under dynamically controlled temperature and pressure conditions. Based on the internationally standardized transient hot-wire (THW) method—defined in ASTM D7896-21 and ISO 22007-2—the instrument determines thermal conductivity by monitoring the time-dependent temperature rise of a thin, electrically heated platinum wire immersed in the sample liquid. This principle eliminates convective interference through ultra-short measurement duration (≤2 s), ensuring high fidelity in low-viscosity and low-conductivity fluids where natural convection would otherwise dominate heat transfer. The TC3100L extends conventional THW capability into demanding operational regimes: from cryogenic conditions (−30 °C) to elevated temperatures (100 °C), and across a wide pressure spectrum (0.1–15 MPa), enabling thermophysical characterization aligned with real-world process environments such as refrigeration cycles, geothermal fluid modeling, aerospace coolant qualification, and high-pressure chemical synthesis.
Key Features
- Ultra-fast transient measurement (≤2 s) minimizes buoyancy-driven convection artifacts, critical for accurate data in low-density or low-viscosity liquids
- Integrated cryogenic cooling and resistive heating system enables stable, programmable temperature control from −30 °C to 100 °C with ±0.05 °C stability over 30 min
- High-integrity pressure vessel rated to 15 MPa, equipped with digital pressure transducers (0.1 MPa resolution) and active pressure regulation for isobaric or pressure-sweep experiments
- Automated thermal drift compensation algorithm corrects for baseline offset during pre-test thermal equilibration
- Modular sensor cartridge design ensures rapid exchange and calibration traceability; each platinum hot-wire probe is individually certified with NIST-traceable resistance–temperature characteristics
- Rugged stainless-steel chassis with electromagnetic shielding and vibration-damped optical table mounting support complies with ISO 17025 laboratory infrastructure requirements
Sample Compatibility & Compliance
The TC3100L is validated for use with polar and non-polar liquids including synthetic lubricants, fluorinated dielectric coolants (e.g., FC-72, Novec™ 7000), nanofluids (Al₂O₃, TiO₂, graphene oxide dispersions), hydrocarbon fuels (n-hexane, iso-octane), refrigerants (R134a, R1234yf), and ionic liquids. Sample volume requirement is ≤15 mL per test. All wetted components are constructed from 316L stainless steel, Hastelloy C-276 seals, and sapphire viewports to ensure chemical compatibility and long-term integrity under aggressive media. The system supports GLP-compliant operation: full audit trail logging (user, timestamp, parameter set, raw voltage–time data), electronic signatures, and export of metadata-rich .csv and .tdms files compatible with LIMS integration. Pressure and temperature sensors are calibrated per ISO/IEC 17025:2017 by an accredited third-party metrology lab, with certificates provided upon delivery.
Software & Data Management
Xiatech’s proprietary TC-Control Suite v4.2 provides intuitive, role-based access control (administrator, operator, reviewer) and full 21 CFR Part 11 compliance—including electronic signature workflows, biometric login options, and immutable audit logs. Real-time visualization includes dual-axis plots of thermal decay curves overlaid with theoretical THW model fits. Automated post-processing generates derivative outputs: thermal conductivity vs. temperature (λ–T), thermal conductivity vs. pressure (λ–P), and combined λ–T–P surface models using cubic spline interpolation. Data export supports SI units only; all reports include uncertainty budgets calculated per GUM (JCGM 100:2008) incorporating contributions from temperature stability, pressure linearity, wire geometry tolerance, and timing jitter. Raw time-series data is stored in HDF5 format for reproducible reanalysis.
Applications
- Development and validation of next-generation refrigerants for low-GWP HVAC systems
- Thermophysical property databases for multiphase flow simulation in oil & gas reservoir modeling
- Quality control of dielectric fluids used in immersion cooling of high-performance computing hardware
- Fundamental research on pressure-induced structural transitions in molecular liquids and nanosuspensions
- Supporting ASTM E2847 and ISO 13789 thermal performance certification of heat transfer fluids
- Generation of boundary-condition inputs for CFD simulations of microchannel heat exchangers operating under sub-zero or supercritical conditions
FAQ
What standards does the TC3100L comply with for thermal conductivity measurement?
The instrument implements the transient hot-wire method per ASTM D7896-21, ISO 22007-2, and DIN 8497, with traceability established via NIST SRM 1470a (certified reference liquid) and internal platinum resistance thermometry calibrated against ITS-90.
Can the TC3100L measure viscous or particulate-laden liquids?
Yes—provided the suspension remains stable during the 2-second measurement window and particles do not settle onto or coat the hot-wire surface. Nanofluids up to 5 vol% loading and kinematic viscosities ≤50 cSt have been successfully characterized; optional ultrasonic agitation modules are available for enhanced dispersion control.
Is remote operation and data monitoring supported?
The TC-Control Suite supports secure TLS 1.3-enabled remote desktop access, live dashboard streaming via MQTT protocol, and scheduled automated test sequences triggered by external PLC signals or time-of-day triggers.
How is calibration maintained over time and varying pressure conditions?
Each TC3100L ships with a dual-point pressure calibration certificate (0.1 MPa and 15 MPa) and three-point temperature calibration (−30 °C, 25 °C, 100 °C). Field recalibration kits—including certified reference oils and pressure deadweights—are available; annual verification services include full mechanical and electrical safety inspection per IEC 61010-1.
