TWO CHAMBER FIRE DETECTOR

摘要

A fire detector of the type including a smoke chamber and a grid supported in the chamber on an insulating element. In order to prevent the flow of leakage currents from the grid to the body of the chamber an electrically-conductive element is arranged around the insulating element in circumferential contact therewith. The electrically-conductive element is arranged to be at the same potential as the grid so that no leakage currents are able to flow from the grid to the body of the chamber.