What is standard of NF P 92-503?
Chapter 3 of the regulations issued by the French government in November 2002, which is based on the reaction characteristics of decorative materials to fire, defines the criteria for its level classification. The regulation of NFP92-503 included the testing method of building and decorating materials fireproof performance, which is suitable for M-level testing of soft materials with thickness less than or equal to 5 mm.
NFP92-503 electric burner accords to M1-level of french standard in NFP92-503 and soft furniture, which applies to French building materials and high-speed rail test standards; The test is intended to place the sample under the following conditions: thermal radiation and hot gas sprayed onto the surface of the sample, a pilot flame will be used to ignite the pyrolysis gas. Record the ignition time, the persistence of the flame, the nature and impact of the combustion.
The equipment has a compact internal control system. Control box and test frame split design. Using a standard heat radiant furnace, heat the sample while applying a small flame for combustion, and then observe the flame propagation performance of the test. Equipped with a precision rota-meter to control the flow of propane gas with an accuracy of up to FS±0.2%.
More details please refer to https://www.firetestingequipment.com/electric-burner.html