FIELD: physics, signalling.
SUBSTANCE: invention relates to fire alarm devices which are triggered by heat from fire source and is intended for use in systems for monitoring extended fire hazardous facilities. The device includes a heat-sensitive element which consists of a closed acoustically conductive heat-resistant pipe filled with a low-melting material (alloy), a piezoelectric transducer, an amplifier, an electrical pulse generator, a switching unit, a processing and control unit and signalling means.
EFFECT: simple design of the fire alarm device.
4 cl, 2 dwg
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