Three-core structure switch, analog composite type linetype temperature inductor

A technology of temperature-sensitive detector and switching value, which is applied in the direction of measuring heat, using directly heat-sensitive electric/magnetic elements, thermometers, instruments, etc., which can solve the problem of low accuracy of alarm temperature and inability to correctly judge fire alarm temperature, etc. question

Inactive Publication Date: 2007-10-24
张陈
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Problems solved by technology

The disadvantage of this detector is: the alarm temperature set by the analog signal is related to the service length and the ambient temperature, and the fire alarm temperature cannot be correctly judged, so that the accuracy of the alarm temperature of the detector is low

Method used

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  • Three-core structure switch, analog composite type linetype temperature inductor
  • Three-core structure switch, analog composite type linetype temperature inductor
  • Three-core structure switch, analog composite type linetype temperature inductor

Examples

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Embodiment 2

[0014] Embodiment 2 A three-core structure switch value, analog compound linear temperature detector, see Fig. 4 and Fig. 5, the two ends of the temperature sensing cable are respectively connected with the microcomputer modulator 7 and the terminal resistors R1, R2, R3 A closed-circuit signal acquisition circuit is formed, which is characterized by the structure of the temperature-sensing cable: two elastic metal conductors 1, one of which is coated with a conductive material layer 8, and then coated with an insulating layer 2 with a Vicat softening point of 40°C to 180°C; The other is coated with an insulating layer 2 with a Vicat softening point of 40°C to 180°C, and then coated with an aluminum-plastic composite tape or a copper-plastic composite tape or a metal foil layer 5; the conductor 3 is covered with a semiconductor layer 4; the three wires are made of different Or the wire cores of the same coating layer are twisted together, and the twisting pitch is preferably bet...

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Abstract

The invention relates to an on-off value and analog quantity composite linear temperature detector with three-core structure, wherein two ends of a temperature-sensitive cable are respectively connected with a microcomputer modulator (7) and three terminal resistances (R1, R2, R3) to form closed-circuit signal pick-up circuit. The invention is characterized in the structure of the temperature-sensitive cable that two elastic metal conductors (1) are respectively coated by an insulated layer (2) which soften point is 40-180Deg. C, wherein one conductor is also coated by a plastic-aluminum composite band, a plastic-copper composite band, or a metal foil layer (5), a conductor (3) is coated by a semi-conductive layer (4), three cores with coats are twisted together, while the twist distance is 20-200mm as best, to extrude an outer sleeve layer (6). The inventive product has high quality reliability, low cost, high temperature alarm sensitivity, to meet the demands of GB16280-2005 (linear temperature sensitive detector) and relative supplementary items.

Description

technical field [0001] The invention relates to a fire alarm device, which is a three-core structure switching value and analog compound linear temperature-sensing detector. technical background [0002] The linear temperature-sensitive fire detector in the prior art is a kind of fire detector that is not widely used. The linear temperature-sensitive detector currently used: consists of a switching value linear temperature-sensitive fire detector and an analog linear temperature detector. The temperature-sensitive fire detector constitutes a four-core structure temperature-sensitive detector, see Figure 1. The two conductors 11 are coated with NTC plastic layers 9 respectively, and the two conductors are twisted together, and the other two elastic conductors 12 are respectively coated with meltable plastic layers 10 and twisted together. There is an outer sheath 14 on the outside, and the signal input end of the resistance signal measuring device 13 is connected to the cond...

Claims

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Application Information

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IPC IPC(8): G01K7/16
Inventor 张陈王文江
Owner 张陈
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