nonresetting fire detectors

nonresetting fire detectors
A fire detector that, once activated, does not reset itself to operate again. The fire-warning light once on will remain on even when the fire has gone out. The detector senses the fire, as it is activated by the high temperature. This completes the electrical circuit and activates the fire-warning light and the audio-warning circuit, if provided. This type of fire detector is used rarely these days.

Aviation dictionary. 2014.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • fire detectors — Heat sensing devices, such as flame detectors, fire switches, thermocouple switches, fire wires, and pyrochords. When the temperature in the zone in which these are located rises beyond a design value, a fire detector detects this. A fire… …   Aviation dictionary

  • finned-head fire detector — A nonresetting fire detector. It is made up of molded insulating material housing a pair of silver radium electrical contacts. A fusible joint holds the contacts apart. With the rise in temperature beyond 200 to 210°C, the joint fuses and the… …   Aviation dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”