UL217 standard smoke box smoke alarm UL certification test equipment
The UL standard smoke box is used to detect the sensitivity, directionality and other characteristics of the smoke alarm. The equipment meets the requirements of UL 217 and UL 268. The standard smoke box is composed of the main body of the smoke box, data acquisition card, computer and DC power supply. The main body of the smoke box is made of imported plates. It is manufactured in accordance with the requirements of standard specifications and parameters. It comes with a photoelectric sensor to detect the smoke concentration value in the cigarette body. It adopts advanced components to ensure the accuracy and stability of the test. The imported DC power supply and fan are used for wind speed control, which can adjust different wind speeds to meet different wind speed test requirements. The equipment is equipped with the National Instruments data acquisition and testing software ( Zontest Smoke box test system ), which continuously monitors the smoke concentration and smoke rising rate, and records the sensitivity value of the alarm.
Amazon certified smoke alarm new standard UL217 and UL268
Smoke alarms are an important line of defense in protecting people from fire hazards. According to statistics, dwellings/buildings that do not have any functioning smoke alarms installed tend to have double the fatality rate from fires compared to dwellings/buildings that work normally when a fire occurs. However, before a smoke alarm enters a home or building, the device needs to be tested to ensure that it meets the safety performance requirements of the UL 217 Standard for Household Smoke Alarms or the UL 268 Standard for Commercial Smoke Alarms. 182 0070 0074 Forestry
An important change to UL/UL 268 is the addition of three common fire models. Two of the polyurethane foam fire detection models (burning and smoldering) and a new false alarm test for kitchen fumes have been incorporated into these standards. Research on these tests began in 2007, when UL was conducting scientific research for the National Fire Protection Research Foundation (NFPRF). UL provided test and scientific data for the smoke characterization project initiated by the National Fire Protection Research Foundation, and introduced the use of advanced aerosol imaging technology and gas measurement technology, by igniting various common materials in the home, the particle size of smoke , quantity and composition were quantified, and a report on the findings titled "Smoke Characterization Project" was written and released on April 24, 2007.
A new generation of smoke alarms that meet the new standard will be equipped with more advanced sensors, combined with the use of composite sensors and intelligent algorithms that can differentiate between smoldering fire smoke and kitchen fumes. This can be distinguished according to the difference in particle size, quantity, gas concentration and color between fire smoke aerosols and kitchen oil smoke aerosols. Advances in detector and sensor design and software algorithms have made this accurate differentiation possible to improve the practical detection performance of smoke alarms and reduce the false alarm rate of traditional smoke detectors. Although it is difficult to eliminate 100% false alarms, it is expected that the next generation of new products will significantly reduce false alarms caused by kitchen fumes.
Manufacturers of smoke alarms and detectors will need to equip their products with advanced sensors and software to meet the challenges posed by new fire tests. Manufacturers have until May 2020 to redesign and obtain new certifications for their products.
For regulators, system designers and system installers, no action is required for the standard update until the effective date. Manufacturers have until May 2020 to redesign their products to meet the new demands. Traditional single-sensor products will struggle to pass the new test standards and will stop production after May 2020. In addition, as May 2020 approaches, it is expected that there will be more alarm applications of composite sensing detection technology in the industry and fewer applications of conventional photodetectors and ionization detectors.
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