LINE TYPE FIXED TEMPERATURE FIRE DETECTOR

摘要

The present invention is a cable tray for installing each power, communication cable, etc. of various industrial facilities or buildings, or a constant temperature sensing linear type that activates an indication and alarm of a fire location occurring in an escalator, tunnel, subway station or underpass. It's about a fire detector.;Features of the present invention for the implementation of the above object,;In the constant temperature fire detection device using the short circuit of the detection line,;The sensing wire made of steel wire such as piano wire with accurate resistance value is coated with an insulating material, and the two sensing wires are twisted to form a sensing unit having a restoring elasticity, and is composed of a constant current circuit unit and a digital display unit connected to the sensing unit. It is done.;In the constant temperature sensing linear detector using the sensing line, by using a constant current circuit and digital volt meta, it is possible to minimize not only the occurrence of the occurrence of fire, but also to determine the exact location of the fire, to minimize human damage and property damage from the fire. do.