Large Scale Mattress Fire Test | 16 CFR 1633 Open Flame Test
Compliance
16 CFR 1633, ASTM E1590
The 1633 Large Scale Mattress Fire Test Equipment, in accordance with 16 CFR Part 1633, is used to measure the flammability performance of a mattress specimen by exposing a defined flaming source on its top and side in a controlled test chamber.
All mattress sets defined in 16 CFR Part 1633.2(c) must pass the 1633 test before the sale or being introduced into commerce. The test sets two targets to limit the spread of flame on the mattress or mattress set, these are: the maximum heat release rate (HRR) from the mattress/mattress set must not exceed 200 kW during the 30-minute test period and the total heat release (THR) must not exceed 15 MJ during the first 10 minutes of the test.
Exhaust Hood and Duct
A stainless steel made hood is installed out of the test room, the size is 2.44 meters by 2.44 meters.
The hood is used to collect the combustion gas and transfer to the exhaust pipe by the plenum chamber on the top.
The exhaust pipe is 406mm in diameter and 8 times diameter in length.
The hood and duct are connected to the exhaust system that capacity not less than 8,000 m3/h.
1633 Test Room Schematic
Instrumental Section
The instrumental section is installed in the end of exhaust duct, equipped with thermocouples, differential pressure transducer, sampling probe, and white light system.
The flow sensor used in the exhaust duct is a bi-directional probe, the probes are made of 316 stainless steel.
The pressure transducer with a range of at least (0-200) Pa and an accuracy of ±2 Pa. Response time of 90% of the output of the pressure transducer is not more than 1s.
Equips 3 OMEGA K type thermocouples for temperature measurement, 24 AWG wire gage, measurement range up to 1000 degrees, with an accuracy of ± 0.75%.
White light measuring system, consisting of a lamp, plano convex lenses, aperture, and photocell.
The smoke measurement system is mounted on the integrated measuring section using a flexible joint diametrically opposite each other.
Bar type sampling probe, SS304 made, removable design for easy removal of particles build-up in the sampling probe, reducing system delay time.
Instrumental Section
Gas Sampling System
Three stages of particle filters, 1st: Soot filter, glass fiber cotton, filtering large particles in the combustion gas; 2nd: PTFE filter, filtering rate up to 2 microns; 3rd: PTFE membrane, filtering rate up to 0.5 microns, effective moisture isolation.
Compressor cold trap, cool capacity up to 320KJ/h, temperature control accuracy up to 0.1 °C, static variation 0.1 °C, self-starting and maintenance-free.
Steam trap, automatic drainage of the cooling water generated by the cold trap, maintenance-free.
Dry the residual moisture in the sampling gas, with quick disassembly and replacement of the drying medium.
KNF vacuum sampling pump with a sampling capacity of 40 L/min, continuous sampling pressure of 50 KPa, high gas tightness, low noise and low vibration.
Gas Analysis System
SIEMENS or ABB paramagnetic type O2 analyzer, measurement range of 0 to 25%, accuracy of ± 0.01%.
SIEMENS or ABB NDIR type CO analyzer, measurement range of 0 to 1%, accuracy of ± 0.001%.
SIEMENS or ABB NDIR type CO2 analyzer, measurement range of 0 to 10%, accuracy of ± 0.01%.
Gas Analyzer
Calibration System
Sandbox burner, provides an even gas flow over the top.
Remote-controlled ignition device, pilot flame ignition with sparker.
Mass flow controller for flame source control, accuracy up to ±2%.
Auto flow control software.
Propane Flow Control Box
Data Acquisition System
Gas concentration: 100×10-6；
Temperature: 0.1℃；
DPT: 0.1Pa；
Time: 0.1s；
Other signals: 0.1% of F.S.
Windows Software
Windows base operation software, interface in English.
The function includes sensor monitoring, sensor calibration, system calibration (step calibration), heat release test, report export, and management.
System Step Calibration
1633 Large Scale Mattress Fire Test
Large Scale Mattress Fire Test
Mattress after 16 CFR Part 1633 Test
