High-Accuracy Guarded Heat Flow Meter Thermal Conductivity Measurement System
Whats/App: +86 156 1874 6768
Web: standard-groups.com
Standards
The instrument is designed and operated in accordance with the following international and national standards:
GB/T 10295-2008
Thermal insulation — Determination of steady-state thermal resistance and related properties — Heat flow meter method
ASTM E1530
Standard Test Method for Evaluating the Resistance to Thermal Transmission of Materials by the Guarded Heat Flow Meter Technique
ASTM C518-04
Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
Parameters
| Item | Specification |
|---|---|
| Thermal conductivity range (low range) | 0.0001 – 1 W/m·K (resolution up to 0.1 mW/m·K) |
| Thermal conductivity range (extended) | 0.001 – 300 W/m·K |
| Measurement accuracy | ±1% |
| Sample size | 50 × 50 to 300 × 300 mm |
| Maximum sample thickness | ≤ 50 mm |
| Optional sample sizes | 600 × 600 mm, 800 × 600 mm (customized) |
| Applicable sample form | Solid materials, powder materials |
| Test duration | 15 – 20 min |
| Hot plate temperature range | Room temperature to 99.9 °C (standard) |
| Optional hot plate range | Room temperature to 499.9 °C or higher (by agreement) |
| Hot plate control accuracy | 0.1 °C |
| Cold plate temperature range | 0 – 99.9 °C (standard); –10 – 99.9 °C optional |
| Cold plate temperature control | Water-cooled, precision constant-temperature bath |
| Cold plate control accuracy | 0.1 °C |
| Pressure range | 0 – 1000 N |
| Pressure resolution | 0.1 N |
| Thickness measurement range | 0 – 50 mm |
| Thickness resolution | 0.1 μm |
| Heat flow sensor | Imported original heat flow meter |
| Test operation | Fully automatic computer-controlled testing and data storage |
| Power supply | AC 220 V / 50 Hz |
Features
Guarded hot plate heat flow meter method for steady-state thermal measurement
High sensitivity for low thermal conductivity materials, resolution down to 0.1 mW/m·K
Imported heat flow sensors ensuring stable and reliable performance
Computer-controlled temperature regulation and pressure loading
Automatic thickness measurement with high resolution
Excellent accuracy, repeatability, and long-term measurement stability
Automatic data acquisition, analysis, storage, and report generation
Suitable for both solid and powder materials
Accessories
Main testing unit
Thermal analysis software (Chinese and English versions)
HX-1005 precision low-temperature constant-temperature water bath (0.01 °C accuracy)
Computer (user-selectable)
Calibration reference sample
Test Procedures
Prepare the specimen according to size and thickness requirements.
Place the specimen between the hot plate and cold plate.
Set the target hot-side and cold-side temperatures in the software.
Apply pressure automatically to ensure stable contact.
Allow the system to reach steady-state heat transfer conditions.
Measure the heat flux and temperature gradient across the specimen.
Calculate thermal conductivity and thermal resistance automatically.
Save and print test data and reports.
Maintenance Information
Keep hot and cold plate surfaces clean and undamaged
Ensure proper operation of the constant-temperature water bath
Periodically check sensor performance and calibration status
Maintain stable laboratory environmental conditions during testing
Store reference samples and accessories properly when not in use
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