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  2. Testo SE - Wikipedia

    en.wikipedia.org/wiki/Testo_SE

    In January 2011, Testo Sensor GmbH was established. [13] Focusing on the development, production, and sale of temperature sensors and thermometers implanted into heating systems and solar equipment, in coffee machines and air-conditioning in cars, among others areas. [14] That same year, Testo AG offered their extended management 5% of its shares.

  3. Inch of mercury - Wikipedia

    en.wikipedia.org/wiki/Inch_of_mercury

    The low-side gauge in a refrigeration gauge manifold indicates pressures below ambient in "inches of mercury vacuum" (inHg), down to a 30 inHg vacuum. Inches of mercury is also used in automotive cooling system vacuum test and fill tools.

  4. R-454B - Wikipedia

    en.wikipedia.org/wiki/R-454B

    Because of its reduced global warming potential (GWP), R-454B is intended to be an alternative to refrigerant R-410A in new equipment. [2] [3] [4] R-454B has a GWP of 466, which is 78 percent lower than R-410A's GWP of 2088. [2] R-454B is non-toxic and mildly flammable, with an ASHRAE safety classification of A2L. In the United States, it is ...

  5. Manifold (fluid mechanics) - Wikipedia

    en.wikipedia.org/wiki/Manifold_(fluid_mechanics)

    Hydraulic manifold A component used to regulate fluid flow in a hydraulic system, thus controlling the transfer of power between actuators and pumps Inlet manifold (or "intake manifold") An engine part that supplies the air or fuel/air mixture to the cylinders Scuba manifold In a scuba set, connects two or more diving cylinders Vacuum gas manifold

  6. List of refrigerants - Wikipedia

    en.wikipedia.org/wiki/List_of_refrigerants

    According to ASHRAE standard 34, the R-number of a chemical refrigerant is assigned systematically according to its molecular structure and has between two and four digits. If there are carbon -carbon multiple bonds , there are four digits in all: the number of these bonds is the first digit and the number of carbon atoms minus one (C-1) is next.

  7. MAP sensor - Wikipedia

    en.wikipedia.org/wiki/MAP_sensor

    The way they do this is during a deceleration of the vehicle when there is low absolute pressure in the intake manifold (i.e., a high vacuum present in the intake manifold relative to the outside air) the powertrain control module (PCM) will open the EGR valve and then monitor the MAP sensor's values. If the EGR is functioning properly, the ...

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