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A Kidde plug-in carbon monoxide detector. A carbon monoxide detector or CO detector is a device that detects the presence of the carbon monoxide (CO) gas to prevent carbon monoxide poisoning. In the late 1990s, Underwriters Laboratories changed the definition of a single station CO detector with a sound device to carbon monoxide (CO) alarm.
In May 2021, Kidde announced a recall of their TruSense line of alarms due to the alarms not detecting smoke until fatal levels. 226 thousand units have been recalled. [33] On May 14, 2023, Kidde-Fenwal filed for Chapter 11 bankruptcy. [34] In December 2024, Kidde was sold by Carrier Global and became part of a new entity called Kidde Global ...
The key components are an infrared source, a light tube, an interference (wavelength) filter, and an infrared detector. The gas is pumped or diffuses into the light tube, and the electronics measure the absorption of the characteristic wavelength of light. NDIR sensors are most often used for measuring carbon dioxide. [2]
A gas detector can sound an alarm to operators in the area where the leak is occurring, giving them the opportunity to leave. This type of device is important because there are many gases that can be harmful to organic life, such as humans or animals. Gas detectors can be used to detect combustible, flammable and toxic gases, and oxygen depletion.
Smoke detector mounted on a ceiling. A smoke detector is a device that senses smoke, typically as an indicator of fire.Smoke detectors/alarms are usually housed in plastic enclosures, typically shaped like a disk about 125 millimetres (5 in) in diameter and 25 millimetres (1 in) thick, but shape and size vary.
It is alleged that, similarly than in the NEDC, some automakers overinflate tyres, adjusting or disconnecting brakes to reduce friction, and taping cracks between body panels and windows to reduce air resistance, some go as far as removing wing mirrors, to inflate measured fuel economy and lower measured carbon emission.
In 1918 Walter Kidde & Company purchased the rights to the "Rich" system for on board fire detection and suppression. The problem with this system was steam was used to put out fire, which then caused considerable damage to the cargo on the ship. Kidde came up with the solution to use carbon dioxide instead of steam.
An open path detector usually costs more than a single point detector, so there is little incentive for applications that play to a point detector's strengths: where the point detector can be placed at the known location of the highest gas concentration, and a relatively slow response is acceptable. The open path detector excels in outdoor ...