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Double temperature warning linear temperature-sensing detector

A temperature-sensitive detector and line-type technology, applied to instruments, thermometers, measuring devices, etc., can solve the problem of inability to distinguish short-circuit fault signals from alarm signals

Inactive Publication Date: 2007-10-10
张陈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that when the detector is short-circuited by accidents such as mechanical extrusion or rat bites, the detector also outputs an alarm signal, and it is impossible to distinguish the short-circuit fault signal from the alarm signal

Method used

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  • Double temperature warning linear temperature-sensing detector

Examples

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Embodiment 2

[0015] Embodiment 2, a kind of dual-temperature alarm temperature-sensing detector, see Fig. 4, Fig. 5, form closed circuit signal acquisition circuit by connecting the two ends of temperature-sensing cable with microcomputer modulator 8 and terminal resistance R1, R2, R3 respectively, its characteristic The structure of the temperature-sensing cable is: an elastic metal conductor 1 is covered with an insulating material layer 4 with a Vicat softening point in the range of 40°C to 180°C, and it can also be covered or not covered with aluminum-plastic or copper-plastic composite tape or Metal foil or conductive material layer 5; another elastic metal conductor 1 is coated with an insulating material layer 4 with a Vicat softening point in the range of 40°C to 180°C, and then coated with aluminum-plastic or copper-plastic composite tape or metal foil or conductive Material layer 5; two wire cores with the same or different coating layers are twisted or twisted together with a con...

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Abstract

A linear temperature sensing detector of double-temperature alarm is prepared for cladding insulation layer with Vicat softening point of 40-180deg.c on one elastic metal conductor, cladding insulation layer then conduction material layer on another elastic metal conductor, twisting two conductor with conductor cladded with semiconductor layer together, storing start-up resistance value of alarm signal in modulator of microcomputer and realizing alarm signal output of double-temperature and, fixed-temperature by utilizing two said elastic metal conductors to short-circuit with conduction material layer then with semiconductor layer at different temperature.

Description

technical field [0001] The invention relates to a fire alarm device, which is a dual-temperature alarm linear temperature-sensitive detector. technical background [0002] The linear temperature-sensitive fire detector in the prior art is a fire detector with a wide range of uses. The linear temperature-sensitive detector currently used is: a multi-level alarm switching value linear temperature-sensitive detector, see Figure 1, In the detector, there is an outer sheath 14, and the two elastic conductors 11 in the sheath are respectively covered with plastic layers 12 with different melting points and conductor wrapping layers 13, and twisted together. When the temperature of the cable of the detector rises to the melting point of the plastic layer 12 and then softens or melts, the elastic conductor 11 contacts with the plastic layer 12 or the conductor wrapping layer 13 respectively under the action of the elastic force, and two short circuits occur, thereby achieving multip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/16
Inventor 张陈王文江
Owner 张陈
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