TPP / HTP Test Device

Evaluate a fabric’s ability to block convective and radiant heat penetration to avoid burn injury.

Predict burn injury for thermal protective fabrics

The Thermal Protective Performance device (TPP) was developed to measure the time elapsed for convective and radiant heat to penetrate through a protective composite fabric system - resulting in a burn injury to human skin. Test results are automatically compared to the Empirical Performance Curve (also known the Stoll Curve), which predicts a second degree burn to human skin as a function of heat and time. The point of intersection between sensor data and the Empirical Performance Curve provides the composite fabric’s TPP rating.

Innovative design for improved testing throughput

Also known as a Heat Transfer Performance Device (HTP), the Thermetrics TPP features a heat source consisting of two propane burners and a 9-bulb quartz infrared heat lamp assembly. The system is automated by using a pneumatically actuated sample carriage, water-cooled shutter, and mass flow controller, with three thermocouple input channels and an integrated sensor cooling stand for improved testing throughput. All TPP/HTP Test devices come with come with laptop PC and ThermDAC Burn Model software, which processes sensor data and calculates the degree of predicted burn injury.

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