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  2. Heat detector - Wikipedia

    en.wikipedia.org/wiki/Heat_detector

    A residential heat detector. A heat detector is a fire alarm device designed to respond when the convected thermal energy of a fire increases the temperature of a heat sensitive element. The thermal mass and conductivity of the element regulate the rate flow of heat into the element. All heat detectors have this thermal lag. Heat detectors have ...

  3. Linear heat detection - Wikipedia

    en.wikipedia.org/wiki/Linear_Heat_Detection

    Linear heat detection (LHD) cable is essentially a two-core cable terminated by an end-of-line resistor (resistance varies with application). The two cores are separated by a polymer plastic, that is designed to melt at a specific temperature (commonly 68 °C for building applications [1]), and without which causes the two cores to short.

  4. Thermopile laser sensor - Wikipedia

    en.wikipedia.org/wiki/Thermopile_laser_sensor

    In this method of cooling the heat is actively transferred to the environment. This is usually done by mounting a fan on the heat sink of a passively cooled detector or by pumping water through a channel system to cool the sensor. The preferred choice depends on the amount of heat to be dissipated and thus on the detector power.

  5. Thermopile - Wikipedia

    en.wikipedia.org/wiki/Thermopile

    Picture of a heat flux sensor that utilizes a thermopile construction to directly measure heat flux. Model shown is the FluxTeq PHFS-01 heat flux sensor. Voltage output is passively induced from the thermopile proportional to the heat flux through the sensor or similarly the temperature difference across the thin-film substrate and number of ...

  6. Bolometer - Wikipedia

    en.wikipedia.org/wiki/Bolometer

    This radiant-heat detector is sensitive to differences in temperature of one hundred-thousandth of a degree Celsius (0.00001 °C). [7] This instrument enabled him to thermally detect across a broad spectrum, noting all the chief Fraunhofer lines.

  7. What should you set your heat to in the winter? Avoid ... - AOL

    www.aol.com/set-heat-winter-avoid-thermostat...

    Turn the heat down when you're away. But setting your thermostat to a specific temperature and never changing it won't be good for your heating bills. Though about 70 degrees is ideal, it's unwise ...

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