Heat Transmission Resistance Test Device GT-C95

Heat Transmission Resistance Test Device GT-C95

To determine the heat transmission performance of textiles, fire-fighting supplies and other materials.

Put sample on the a certain amount of heat flux fire source, test the time of temperature increasing specified value (△t=24℃) by calorimeter sample’s back. And refer it as index of judging heat conduction property.

Why is this test crucial?

In the textile and apparel industry, understanding the Thermal Resistance (Rct) and Thermal Conductivity of a fabric is vital for product development. Whether you are manufacturing winter wear, sportswear, or industrial protective clothing, this tester ensures your products meet specific comfort and safety standards. By measuring the heat flow through the material, manufacturers can scientifically rate the warmth level of their products.

• Can be digital display flame temperature, measurement temperature, time.
• The burner is suitable for combustion of oil gas in the flame nozzle, air holes in Inner-Ring-and-Outer-Ring, calorimeter located inside holes on upper sample holder, which directly touch with sample.

Accessories

Q: What does Δt = 24°C mean in heat transmission testing?

A: It’s the standard temperature rise threshold set by ISO 9151. The GT-C95 measures the time taken for the sample’s backside to increase by 24°C under a defined heat flux, indicating thermal insulation effectiveness.

‌Q: What standards does the GT-C95 comply with? What tests can it perform?‌

‌A:‌ The GT-C95 testing equipment fully complies with international standards ‌ISO 9151‌ and ‌EN 367‌.

‌ISO 9151:‌ Measures the Heat Transfer Index (HTI) by recording the time taken for the backside of a material sample to rise by a specified temperature increase (typically Δt = 24°C) under a defined heat flux.

‌EN 367:‌ Specifically evaluates the heat transmission properties of materials used in protective clothing (like firefighting gear) for their thermal protective performance.

‌Q: How does the GT-C95 measure heat transmission? What data does it output?‌

‌A:‌ The sample is exposed to a standardized heat source (flame). A calorimeter on the opposite side (backside) continuously monitors the temperature change. The device digitally and directly displays three key parameters in real-time:

• Flame temperature.
• Sample backside temperature.
• Time taken to reach a specified temperature increase (e.g., 24°C).

‌Q: Which materials is the GT-C95 suitable for testing?‌

‌A:‌ The GT-C95 is specifically designed for evaluating the ‌thermal protective performance‌ of materials, including:

• Fabrics for protective clothing (e.g., for firefighters, industrial workers).
• Firefighting equipment materials.
• Heat-insulating and flame-retardant materials.
• Various textile and composite materials.

‌Q: What are its key features and safety design?‌

‌A:‌ Intuitive Operation:‌ Real-time digital display of critical data.

‌Safe Design:‌ Features a gas burner with an inner/outer ring flame nozzle structure. The calorimeter is securely positioned within holes on the upper sample holder, minimizing operational risk.

‌Reliable Results:‌ Complies with standard test methods to ensure accurate and repeatable measurements.

‌Q: What maintenance is required to ensure accuracy?‌

‌A:‌ We recommend:

• Regular Calibration:‌ Have key sensors (temperature, timing) calibrated periodically.
• ‌Cleaning and Care:‌ Keep the burner and sample holder clean to prevent residue build-up.
• ‌Validation:‌ Use standard reference materials with known properties to verify the device's performance.