Working principle of 85 degree cable type linear temperature detector

Description :

　　Overview

　　JTW-LD-KC2002A series two coredoubleTwisted resettable linear temperature detector (hereinafter referred to as the detector) is a reusable linear cable type fixed temperature detector, with technical performance indicators in accordance with GB16280-2005 "Linear Temperature Fire Detector" and the content of Amendment 1. The detector consists of a temperature sensing cable, a signal converter, a terminal box, and three parts. It adopts a passive contact output method and can be easily matched with fire alarm controllers from other manufacturers. It is widely used in industrial occasions such as cable corridors.

　　JTW-LD-KC2000The series of two core twisted pair heat detectors have the following functional characteristics:

　　1) Fire alarm and fault signals are output in the form of passive contacts;

　　2) System operation, faults, and fire alarm information are simultaneously indicated by LED;

　　3) The temperature sensing cable adopts two coresdoubleTwisted structure, strong resistance to mechanical damage and electromagnetic interference; Specially suitable for fire detection in industrial sites such as metallurgy, power, and petrochemicals.

　　4) Ultra wide voltage operating range;

　　twoworking principle

　　The signal converter is connected to a certain length of temperature sensing cable and terminal box for use, and the signal converter is equipped with a signal processing circuit. This includes signal acquisition, signal amplification and conversion circuits, display circuits, environmental temperature testing circuits, etc. The signal converter continuously monitors the temperature of the temperature sensing cable and the environment, and alarms for temperature rise, disconnection, and short circuit caused by abnormal situations.

　　threeMain technical indicators

　　Environmental temperature: The working environment temperature of the signal converter is -50 ℃~70 ℃, and the working environment temperature of the temperature sensing cable is -50 ℃~70 ℃

　　Constant temperature alarm temperature: KC2001 70 ℃

　　KC2002A 85℃

　　KC2002A/105 105℃

　　KC2002A/138 138℃

　　Recoverable temperature: below 150 ℃

　　Long term working relative humidity: ≤ 98%, no condensation

　　Signal Converter

　　Working voltage: DC12-40V

　　Static monitoring current: ≤ 25mA

　　Fault and fire alarm status current: ≤ 45mA

　　Fire alarm and fault relay contact capacity: 0.5A/24VDC, 0.1A/220VAC

　　The protection level of the signal converter and terminal box is IP65

AfterSalesService :

• Double twisted resettable linear temperature detector