GOST ISO 6942-2011 Protective Clothing Radiant Heat Resistant Test Equipment

The thermal radiation resistance tester is used to determine the thermal radiation protection performance of protective materials, which meets the test standards of ISO 6942 and EN 366. The instrument consists of two testing methods. Method A is used to visually evaluate the appearance changes of the material after thermal radiation. Method B measures the radiation heat transfer index (RHTI) of the material by measuring the test time required to raise the back temperature of the sample by 12 or 24 degrees, and then determines the thermal protection performance of the material.

The radiation source shall consist of six heating rods made of silicon carbide (SiC) with the following characteristics:

The rods shall be mounted horizontally in a single vertical plane in a U-shaped frame made of insulating, non-combustible material. The six rods are divided into two groups, with three rods in each group connected in series. Both groups are connected in parallel and connected to a 220 V power source through an additional resistor with a nominal value of 1 ohm.

Curved copper plate calorimeter: The copper plate weight must be between 35.9 and 36.0 g.

Non-combustible asbestos-free thermal insulation board, 25 mm thick (90 mm × 90 mm). The characteristics of this board must meet the following requirements:

The incident heat flux density levels are selected according to the following criteria:

AQ 6103/BS EN 366:1993/DIN EN 366:1993/ISO 6942:2002

Fire testing includes reaction and resistance to fire testing of materials and structures, and the performance testing of fire suppression components and systems (e.g., extinguishers and sprinklers), of detection and alarm systems and cables, and of smoke and heat ventilation systems.