Search results
Results from the WOW.Com Content Network
An aspirating smoke detector (ASD) is a system used in active fire protection, consisting of a central detection unit which draws air through a network of pipes to detect smoke. [1] The sampling chamber is based on a nephelometer that detects the presence of smoke particles suspended in air by detecting the light scattered by them in the chamber.
The standard fire alarm sound used in most of North America. Coding refers to the pattern or tones a notification appliance sounds in and is controlled either by the panel or by setting jumpers or DIP switches on the notification appliances. The majority of audible notification appliances installed prior to 1996 produced a steady sound for ...
As well as functioning as electronic sounders, S-Cubed devices can feature a voice function and a beacon function, which would later be replaced in 2014 with an EN54 compliant VAD with the release of the Mark 3 sounders. In 2005, the S-Quad was released, [9] featuring a beacon, sounder, detector and voice sounder. Early models did not feature ...
But if the sound is deadened, sometimes a light can be of use. LEDs are especially helpful if you’ve lost something in the dark, assuming the item lands with its light unobstructed. It’s also ...
Active sound design, a technology used in cars to alter or enhance the sound inside and outside of the vehicle; Adjustable-speed drive, of an electric motor; Allowable stress design, a structural design methodology; Aspirating smoke detector, an indoor fire-protection device; Acceleration spectral density, a mechanical vibration test parameter
It might sound complicated to base your workout routine on a moving target, but it can be a great tool once you get the hang of it. First, a simple formula to find your zone 2 heart rate: Subtract ...
A crowd of community members gathered under gray skies Sunday afternoon outside the Maryland Cracker Barrel where a group of special needs and autistic children were denied dine-in service earlier ...
There are many types of fire alarm systems, each suited to different building types and applications. A fire alarm system can vary dramatically in price and complexity, from a single panel with a detector and sounder in a small commercial property to an addressable fire alarm system in a multi-occupancy building.