Analog line-type temperature sensitive fire detection cable

Details Analog line-type temperature sensitive fire detection cable Analog line-type temperature sensitive fire detection cable

2007-07-06

2009-08-25

Allen, Andre J (Department: 2855)

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

Reexamination Certificate

active

07578617

ABSTRACT:
The present invention relates to an analog line-type temperature sensitive detection cable including two detection conductors arranged in parallel. A NTC characteristic obstructive layer and a fusible insulation layer are provided between the two detection conductors arranged in parallel, characterized in that a intermittent conductive layer is provided between the NTC characteristic obstructive layer and the fusible insulation layer along longitudinal direction of the fire detection cable, wherein at least one of the two detection conductors is an elastic conductor. The invention overcomes the defects of the inaccurate alarm temperature caused by insufficient conductiveness of the two detection conductors while the analog line-type temperature sensitive detector having a fusible insulation layer in the prior art is heated.

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European Search Report for EP No. 07111718.8, Aug. 30, 2007 (mailing date), Zhang, et al.

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