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  2. Thermal conductivity detector - Wikipedia

    en.wikipedia.org/wiki/Thermal_conductivity_detector

    The thermal conductivity detector (TCD), also known as a katharometer, is a bulk property detector and a chemical specific detector commonly used in gas chromatography. [1] This detector senses changes in the thermal conductivity of the column eluent and compares it to a reference flow of carrier gas. Since most compounds have a thermal ...

  3. Transient hot wire method - Wikipedia

    en.wikipedia.org/wiki/Transient_Hot_Wire_Method

    The transient hot wire method has advantage over the other thermal conductivity methods, since there is a fully developed theory and there is no calibration or single-point calibration. Furthermore, because of the very small measuring time (1 s) there is no convection present in the measurements and only the thermal conductivity of the fluid is ...

  4. Hydrogen sensor - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_sensor

    Greg Glatzmaier, at the National Renewable Energy Laboratory, determines the high-temperature thermal and mechanical stability of sealants used in a lab prototype of the integrated hydrogen sensor separator module. A hydrogen sensor is a gas detector that detects the presence of hydrogen. They contain micro-fabricated point-contact hydrogen ...

  5. Thermal conductivity measurement - Wikipedia

    en.wikipedia.org/wiki/Thermal_conductivity...

    The range of thermophysical properties can be covered by different forms of the technique, with the exception that the recommended thermal conductivity range where the highest precision can be attained is 0.01 to 150 W/m•K for the linear source freestanding sensor and 500 to 8000 J/m2•K•s0.5 for the planar source freestanding sensor.

  6. Hydrogen infrastructure - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_infrastructure

    Hydrogen fueling pump. A hydrogen station is a storage or filling station for hydrogen fuel. [38] The hydrogen is dispensed by weight. [39] [40] There are two filling pressures in common use: H70 or 700 bar, and the older standard H35 or 350 bar. [41] As of 2021, around 550 filling stations were available worldwide. [41]

  7. T-MOS thermal sensor - Wikipedia

    en.wikipedia.org/wiki/T-MOS_thermal_sensor

    A thermal sensor is a device able to detect the thermal radiation emitted by an object located in the FOV(Field Of View) of the sensor. Infrared radiation ( IR ) striking the sensor produces a change in the temperature of the device that as a consequence generates an electric output signal proportional to the incident IR power.

  8. Pellistor - Wikipedia

    en.wikipedia.org/wiki/Pellistor

    A pellistor is a solid-state device [1] used to detect gases which are either combustible or which have a significant difference in thermal conductivity to that of air. The word "pellistor" is a combination of pellet and resistor .

  9. Heat Flow and Physical Properties Package - Wikipedia

    en.wikipedia.org/wiki/Heat_Flow_and_Physical...

    It contains a heater to determine thermal conductivity during descent, and it trails a tether equipped with precise heat sensors placed at 10 cm (3.9 in) intervals to measure the temperature profile of the subsurface. [6] [7] The mole penetrator unit is designed to be placed near the lander in an area about 3-m long and 2-m wide. [21]

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