Which detector is commonly used near cooking appliances to reduce nuisance alarms due to quick response?

Which detector is commonly used near cooking appliances to reduce nuisance alarms due to quick response?

• A. Ionization
• B. Acoustic
• C. Magnetic
• D. Photoelectric

Answer: (D)

Understanding how smoke detectors respond helps explain why a photoelectric detector is favored near cooking areas. Photoelectric detectors use light and are especially sensitive to larger smoke particles and the kind of smoke produced by smoldering or cooking fires. They tend to alarm more slowly when exposed to everyday cooking aerosols, which reduces nuisance alarms. Ionization detectors, by contrast, are highly responsive to the tiny particles typical of flaming fires, so they alert quickly to fast, small-space fires but are more prone to nuisance alarms from cooking smoke. Near appliances that generate a lot of grease- or steam-filled air, that extra sensitivity leads to frequent false alarms. Acoustic or magnetic detectors aren’t standard choices for this purpose in most systems, so they aren’t used to address nuisance alarms from cooking. Therefore, using a photoelectric detector near cooking appliances provides the best balance of early fire detection with fewer nuisance alarms.

Understanding how smoke detectors respond helps explain why a photoelectric detector is favored near cooking areas. Photoelectric detectors use light and are especially sensitive to larger smoke particles and the kind of smoke produced by smoldering or cooking fires. They tend to alarm more slowly when exposed to everyday cooking aerosols, which reduces nuisance alarms.

Ionization detectors, by contrast, are highly responsive to the tiny particles typical of flaming fires, so they alert quickly to fast, small-space fires but are more prone to nuisance alarms from cooking smoke. Near appliances that generate a lot of grease- or steam-filled air, that extra sensitivity leads to frequent false alarms.

Acoustic or magnetic detectors aren’t standard choices for this purpose in most systems, so they aren’t used to address nuisance alarms from cooking. Therefore, using a photoelectric detector near cooking appliances provides the best balance of early fire detection with fewer nuisance alarms.