Testing device BVG DIN EN 13772

• Burning behavior of curtains - measuring the flame spreading behavior of vertically fixed specimen exposed to large ignition sources.

The device tests textiles and textile products, assessing the burning behavior and flame spreading behavior of vertically fixed specimen.
The device consists of the burning box, a pneumatically controlled burner which is adjustable vertically and has more than 3 angle positions, the burner's moving mechanism, an irradiator, a calorimeter and the mechanism for fixing the specimen. The temperature control of the irradiator, the moving of the burner and the shield and the data collection is software controlled. The testing process can be defined in a simplified manner as follows: A heat flow with defined thermal rating is directed through a fixed plate in the lower part of the backside of the vertically fixed specimen. After 30 s a small flame (see DIN EN ISO 6941) is directed to a small piece of cotton tissue for 10 s where the tissue is fastened around the specimen's edge. The possible flame spread is measured through the breaking of the marking threads.