Loading ...When designing an audible/visible (AV) system, there are several upfront tasks and calculations that must be made that can be tedious and complicated. System Sensor assists in this process by providing tools online (www.systemsensor.com/tools): the Voltage Drop Calculator, the Mounting Options Tool and the Equivalent Facilitation Calculator.
Posts Tagged ‘ Speakers and Strobes ’
Proper Measures Avoid Having Too Few or Too Many Devices
Measuring intelligibility for fire and emergency communications systems (ECSs) will become more commonplace as local jurisdictions adopt the 2010 version of NFPA 72. Taking proper measures can be complex, and most fire and life safety system designers have to work around existing building features that affect intelligibility.
Got Intelligibility? Be Heard and Understood
Emergency communications systems have amplified the need for effective voice communications systems. NFPA 72-2010 formally addresses measuring voice intelligibility to ensure what is said is heard properly.
Fire Protection Specialists Lend Consulting, Inspection Expertise
Keith S. Frangiamore is vice president of operations at Fire Safety Consultants, Inc. (FSCI), Elgin, Ill., and a certified fire protection specialist. FSCI, one of the largest private fire protection plan review service companies in the United States, provides review services for many U.S. municipalities and fire departments, as well as for private companies throughout the world. FSCI’s project list includes soccer stadiums, hospitals, casinos and data storage warehouses.
Redesigned Sounder Bases Increase Versatility, Consistency
The newly redesigned System Sensor sounder base presents a cleaner, more attractive look backed by simplified installation, easier configuration and better performance. Versatile enough to be used in almost any application, its surface-mount pre-wire plate is flexible and adaptable to fit various junction box styles.
First to Care, First to Protect
Nowhere can you find a more vulnerable population than in the healthcare field. Patients place their trust in the hands of their caretakers, from bedridden adults in orthopedic wards and incubated infants in critical care centers, to residents of nursing homes with Alzheimer’s disease or those recovering from rehabilitative surgery.
The professionals who work in the [...]
Q&A: Managing Life Safety for the U.S.’s Largest, Fully Accredited School District
Billy Taddeo, a foreman in physical plant operations for Broward County School District’s maintenance division, is responsible for protecting more than 270,000 K-12 students and 38,000 district personnel. The Broward County School system in Florida is the nation’s largest, fully accredited school district, with 273 facilities covering more than 36 million square feet. Taddeo is NICET II (National Institute for Certification of Engineering Technologies) certified.
Sound Design Powers Flashy New SpectrAlert® Advance
The final step before a building is approved for occupancy is installing the fire system. With anticipation of an on-time grand opening, building owners depend on the installer to construct that system quickly and accurately.
Cover: Code, Training and Equipment: All Vital to Healthcare Fire and Life Safety
An interview with Barnes-Jewish Hospital’s manager of plant operations.
Mike Menzel, manager of plant operations for Barnes-Jewish Hospital in St. Louis, attributes the safety of patients and staff to a strict adherence to fire-protection codes, by-the-book installations and a commitment to maintenance and training.
Menzel oversees 6.5 million square feet of space at Barnes-Jewish Hospital, one of [...]
Industry Update: UL Revises 1971, Signaling Devices for the Hearing Impaired
New standards cut back system failure risks.
In May 2004, Underwriters Laboratories (UL) revised UL 1971, regulating how operating currents are to be measured and how voltage ranges are to be listed and published.
Historically, fire-alarm system designers used 24-volt current draw for computing voltage drops on audible and visible (AV) circuits. However, voltage drops based on [...]