Explosion-proof sound and light alarm outdoor type. Temperature cable, temperature cable has the ability to continuously monitor the temperature of the protective object along the line length.
Generally, the inside of the temperature cable is two elastic wire, each wire outside is wrapped with a layer of temperature and insulation material, normal monitoring state, two wires are in an insulated state, when the ambient temperature rises to a predetermined operating temperature, temperature sensitive material will rupture, two wires will produce a short circuit, The input module checks to the short-circuit signal and immediately generates an alarm, which is a "switching volume" temperature cable.
Structural principles
However, with the expansion of the field of temperature cable applications, the industry's technical requirements for temperature-sensitive cables are also deepening, and now there is a "simulated amount of temperature-based" and squot;
Four-core analog temperature-based temperature cable, composed of four cores, temperature changes, the resistance between the four-core wire changes, when the resistance changes to reach the set alarm threshold, the detector issued a fire alarm signal.
Four-core analog amount differential temperature-sensitive cable, composed of four cores, temperature changes, the resistance between the four-core wire changes, when the resistance change rate or the amount of change to reach the set alarm threshold.
It can be used in tunnels, mezzanines, conveyor belts and other places, temperature cable detector is stable and reliable, suitable for fire detection in harsh environments.