Thermal Conductivity Tester Heat Flow Meter Insulation Material Tester

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heat flow meter thermal conductivity tester, thermal resistance measuring instrument, insulation foam material tester, powder thermal conductivity tester, building material thermal performance test equipment

Thermal Conductivity Tester Heat Flow Meter Method Thermal Resistance Analyzer for Insulation Materials

The HZ‑7039M Thermal Conductivity Tester is professional laboratory instrument based on protective flat‑plate heat flow meter principle. It is designed to test thermal conductivity and thermal resistance of low‑thermal‑conductivity substances, including foam plastics, thermal insulation cotton, refractory materials, concrete and powder samples.

Equipped with high‑precision hot surface heater and constant‑temperature cold‑surface bath system, the instrument completes steady‑state heat flow measurement under computer automatic control. It can auto‑collect data, calculate results and generate complete test reports. Widely adopted in university laboratories, scientific research institutes, third‑party quality inspection agencies and material manufacturing factories. It complies with GB/T 10295‑2008, ISO 8301:1991, ASTM C518‑04, JIS‑1412‑2 international standards.

Equipment summary
Main functions
Corresponding standard
Technical parameters

HZ‑7039M thermal conductivity tester consists of main test cabinet, hot‑surface heating unit, constant‑temperature cold bath, protective measurement‑control device, automatic pressurization & thickness‑measuring assembly and PC test software.

The hot surface adopts programmable high‑precision heater with 0.01 ℃ temperature resolution. Cold surface temperature is precisely controlled by external constant‑temperature water tank with temperature fluctuation less than 0.05 ℃. The protective measurement‑control structure eliminates ambient interference and ensures excellent test repeatability.

The machine supports automatic pressure loading (0‑1000 N) and automatic sample‑thickness detection. It can test both solid flat specimens and powder materials with matched sample box. After test completion, PC software automatically processes data and exports test curves & reports. Transparent organic‑glass windshield allows real‑time observation of internal test status.

Heat Flow Meter Testing Principle
Adopt internationally‑recognized protective flat‑plate heat flow meter method for steady‑state thermal conductivity & thermal‑resistance measurement.
High‑precision Dual‑zone Temperature Control
Hot‑surface programmable heating (RT‑100 ℃); cold‑surface controlled by precision constant‑temperature bath (5‑80 ℃); temperature resolution reaches 0.01 ℃.
Protective Measurement‑control Device
Eliminate environmental heat‑loss interference, greatly improve test accuracy and data repeatability.
Automatic Pressurization & Thickness Measurement
Motor‑driven automatic clamping pressure 0‑1000 N (0.1 N resolution); high‑precision displacement sensor auto‑measures sample thickness 0‑50 mm (0.01 mm resolution).
Solid & Powder Sample Compatibility
Suitable for solid board‑shaped samples; equipped with special sample box for powder material thermal‑performance test.
PC‑based Automatic Test System
Computer completes parameter setting, data acquisition, result calculation, curve display and report export; avoid manual reading error.
Transparent Observation Window
Organic‑glass transparent windshield with side opening door; users can observe sample and internal test status directly.
Multi‑international‑standard Compliance
Supports test according to ASTM C518‑04, ISO 8301:1991, GB/T 10295‑2008, JIS‑1412‑2.

Item	Specification
Test Principle	Protective Flat‑Plate Heat Flow Meter Method
Thermal Conductivity Range	0.0010 ~ 3.0000 W/m·K, retain 4 decimal places
Measurement Accuracy	≤ ±3%
Repeatability	±1%
Sample Dimension	300 × 300 mm, thickness: 5‑50 mm
Applicable Sample Type	Solid material, Powder material
Hot‑surface Temperature Range	RT ~ 100 ℃
Cold‑surface Temperature Range	5 ~ 80 ℃
Temperature Resolution	0.01 ℃
Cold‑surface Temp Fluctuation	＜0.05 ℃
Clamping Pressure Range	0‑1000 N, resolution:0.1 N
Thickness Measurement Range	0‑50 mm, resolution:0.01 mm
Control Mode	PC automatic control / Manual operation
Power Supply	220V, 50Hz