Thermal Protective Performance Tester

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The thermal protection performance (TPP) tester is mainly used to test the thermal insulation properties of horizontally placed flame retardant protective clothing fabrics exposed to radiant and convective heat sources.measuring the resulting damage to human skin.

Highlights：

Automatic test operation provides repeatable and precise results

Independently controlled radiant heat source and convective heat source

Water-cooled shutter is pneumatically actuated for precise exposure control

Standards

(1) BS EN ISO 6942 – Protective clothing – Protection against heat and flame – Method of test for the determination of heat transfer on exposure to a heat source

(2) EN 366 – Protective clothing against heat and flame – Resistance of materials to contact heat

(3) EN 407 – Protective gloves against thermal risks (heat and/or fire)

(4) ISO 11612 – Protective clothing – Clothing to protect against heat and flame

(5) ASTM F1939 – Standard Test Method for Evaluation of Thermal Protective Performance of Materials for Clothing

(6) ASTM F2702 – Standard Test Method for Heat Transfer and Thermal Protective Performance of Flame Resistant Clothing Materials Using a Thermal Protective Performance Tester

(7) NFPA 1971 – Standard on Protective Ensembles for Structural Fire Fighting and Proximity Fire Fighting

(8) NFPA 2112 – Standard on Flame-Resistant Garments for Protection of Industrial Personnel Against Flash Fire

(9) GB 38543 – Technical Specification for Fire Protection of Workwear for Industrial Personnel

(10) GB/T 38306 – Test Method for Thermal Protective Performance of Flame Retardant Protective Clothing

Principle：

Under exposure to a specified heat flux, the time to second-degree burns is derived from the intersection point of the response curve (temperature rise curve of the calorimetric sensor) and the human tissue tolerance curve (Stoll curve). The higher the product of the heat flux level and the time to second-degree burns, the stronger the thermal protective performance of the fabric.

Feature：

Standard calorimeter mounting block.

PLC control system provides stable and fast testing performance.

Analysis software with user friendly interface is easy to use and installed Stoll curve model internally.

Compact structure design reduces the requirements of fume hood.

Evaluates the potential for skin burns associated with a fabric’s ability to block convective and

radiant heat penetration

Automatic test operation provides repeatable and precise results

Independently controlled radiant heat source and convective heat source

Supports up to three copper disk calorimeter sensor assemblies

Integrated air-cooled sensor stand quickly prepares calorimeter sensor for next test

Water-cooled shutter is pneumatically actuated for precise exposure control

Automatically predicts time to second degree burn, with results shown as a real-time numerical and graphical display of sample performance compared to the Empirical Performance Curve

Small and portable, the TPP test device fits in most standard fume hood

Technical Parameters

Heat Flux Measurement Range	0–167 kW/m²
Heat Flux Measurement Accuracy	±2 kW/m²
Specimen Irradiated Size	≥200mm*200mm,for testing flame-retardant protective clothing, fire-fighting suits and protective gloves
ConvectionHeatSource	2Merkel lamps (Heat flux: up to 60 kW/m²; Radiant heat flux: up to 40 kW/m²)
Rotor Propane Gas Flowmeter	Provides precise, stable propane flow for the burner
Radiant Heat Source	9pcs of500W infrared quartz lamps (proportional power controlfor0–30 kW/m²radiant heat flux)
ASTM F2703Copper Calorimeter	Accuracy±3% F.S.;Weight 1000±10 g
Copper Calorimeter Copper Plate	Imported Oxygen-Freesuperconductingcopper
Data Acquisition System Sampling Rate	≥20samples/second
Environment	15–35℃
Fume Hood	Recommended internal dimensions ≥150×75×90 cm, including door height
Gas Source	Propane (Purity≥95%, equipped with pressure reducing valve - cylinder & outlet pressure controlled)
Compressed Air	Customer-supplied
Cooling Water Source	Tap water (inlet & outlet) or optional chiller
Power supply	Single phaseAC220V 50Hz
Dimension	130×65×53cm (LXWXH)
Weight	Around 60kg

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