BS476-6 Propagation Index Tester for Sale

BS476-6 Propagation Index Tester for Sale
Introduction:
1). BS 476-6 is a test method of measuring the flame propagation properties of materials, primarily for fire protectionperformance evaluation of the walls and ceilings, measurement results are expressed as an index of flame propagation.
2). During the test, the specimen is exposed to the tubular torch, heat release of the lamp is 530J / S. 2 minutes and 45seconds later, the two electric heater was adjusted to 1800 watts in total, 5 minutes after starting the test, reduced thepowerto 1500 watts, keep the power not changed until finishing the experiment, the total test time is 20 minutes.
3). To assess the flame propagation properties of the material to be tested in BS476-6, thermocouple continuous recordingchimney temperature and room temperature difference, and compared the results with the calibration curve, calibration curvebased on the provisions of the density of asbestos - cement slab in the same measured way.4). Comparing the temperature difference value of two curves which measured at the same time. In the first three minutes ofthe test, take the temperature difference value every 30 seconds, in the following 4-10 minutes, take the temperaturedifference value every one minute. In the last 11-20 minutes, take the temperature difference value every two minutes. Theflame spread index of these three periods are calculated according to formula.5). It is the value of sum of the three periods flame spread index. The higher of I value, the lower the material flame retardant,0 grade material I≤12.
Features:
1.Stainless steel cabinet support frame;2.Calcium silicate board combustor;3.All the three sample holders are stainless steel parcel;4.2 sets 1000W quartz radiation device, to provide thermal radiation to samples;5.T-type burner supply flame combustion to the sample;6.Thermocouple continuous recording temperature and room temperature difference value in chimney;7.The power output is automatically controlled according to the test of time;8.The computer automatically processes the data, and print test report;