Laboratory Liquid Thermal Conductivity Analyzer Using Hot Wire Method
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Whats/App: +86 156 1874 6768
Web: standard-groups.com
Standards
The analyzer is designed and tested in accordance with internationally recognized standards:
ASTM D7896-19 — Standard Test Method for Thermal Conductivity, Thermal Diffusivity, and Volumetric Heat Capacity of Liquids Using the Transient Hot-Wire Method
Parameters
| Parameter | Configuration 1 | Configuration 2 | Configuration 3 |
|---|---|---|---|
| Material | Liquids & phase change materials | Liquids & phase change materials | Liquids & phase change materials |
| Thermal Conductivity (W/m·K) | 0.01 – 2 | 0.01 – 2 | 0.01 – 2 |
| Additional Properties | Thermal diffusivity, specific heat | Thermal diffusivity, specific heat | Thermal diffusivity, specific heat |
| Viscosity Range (cP) | 0.001 – 10.000.000 | 0.001 – 10.000.000 | 0.001 – 10.000.000 |
| Sample Volume (mL) | 20 | 20 | 20 |
| Test Time (s) | 1 | 1 | 1 |
| Accuracy (Thermal Conductivity)* | ±2% | ±2% | ±2% |
| Repeatability (Thermal Conductivity)* | ±1% | ±1% | ±1% |
| Temperature Range (°C) | 10 to 200 | -40 to 200 | -160 / -40 / 0 to 300 |
| Pressure (bar) | Up to 20 | Up to 20 | Up to 35 |
| External Cooling Required | No | Yes | Yes |
| Standard | ASTM D7896-19 | ASTM D7896-19 | ASTM D7896-19 |
Features
Transient hot-wire method with ultra-fast 1-second measurement
High accuracy and excellent repeatability for liquid thermal properties
Non-steady-state measurement minimizes convection effects, even for high-viscosity samples
Small sample volume requirement (20 mL)
Wide viscosity, temperature, and pressure measurement capability
Fully compliant with ASTM D7896-19
Accessories
(1) Paste and PCM element — Designed for easy loading of phase change materials; spring-loaded structure accommodates thermal expansion and contraction while maintaining contact with the THW wire
(2) Observation element — Glass viewing port for monitoring sample conditions such as phase separation, boiling, or particle sedimentation
(3) Ambient density powder element — Suitable for basic powder testing at ambient pressure
(4) Variable density powder element — Spiral compression system allows density adjustment and stable wire contact
(5) Vertical element holder — Enables vertical loading for paste, PCM, and powder elements
(6) Cooling system options —
Economic circulator: down to 0 °C
Circulator: down to -15 / -35 / -50 °C
Advanced options: down to -100 / -150 °C
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