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  2. Automatic meter reading - Wikipedia

    en.wikipedia.org/wiki/Automatic_meter_reading

    The meter communicates to its collection point using 900 MHz mesh network topology. Automatic meter reading (AMR) is the technology of automatically collecting consumption, diagnostic, and status data from water meter or energy metering devices (gas, electric) and transferring that data to a central database for billing, troubleshooting, and ...

  3. List of abbreviations in oil and gas exploration and production

    en.wikipedia.org/wiki/List_of_abbreviations_in...

    DFPH – Barrels of fluid per hour; DFR – drilling factual report; DG/DG# – diesel generator ('#'- means identification letter or number of the equipment i.e. DG3 or DG#3 means diesel generator nr 3) DGA – diglycoamine; DGDS – dual-gradient drilling systems; DGP – dynamic geohistory plot (3D technique) [10] DH – drilling history

  4. Electric motor - Wikipedia

    en.wikipedia.org/wiki/Electric_motor

    An electric generator is mechanically identical to an electric motor, but operates in reverse, converting mechanical energy into electrical energy. Electric motors can be powered by direct current (DC) sources, such as from batteries or rectifiers, or by alternating current (AC) sources, such as a power grid, inverters or electrical generators.

  5. Heat exchanger - Wikipedia

    en.wikipedia.org/wiki/Heat_exchanger

    Heat exchangers or similar units for producing steam from water are often called boilers or steam generators. In the nuclear power plants called pressurized water reactors, special large heat exchangers pass heat from the primary (reactor plant) system to the secondary (steam plant) system, producing steam from water in the process.

  6. Cathode-ray tube - Wikipedia

    en.wikipedia.org/wiki/Cathode-ray_tube

    The outer conductive coating is connected to ground while the inner conductive coating is connected using the anode button/cap through a series of capacitors and diodes (a Cockcroft–Walton generator) to the high voltage flyback transformer; the inner coating is the anode of the CRT, [186] which, together with an electrode in the electron gun ...

  7. U-matic - Wikipedia

    en.wikipedia.org/wiki/U-matic

    U-matic was also used for the storage of digital audio data. Most digital audio recordings from the 1980s were recorded on U-matic tape via a Sony PCM-1600, -1610, or -1630 PCM adaptor. These devices accepted stereo analogue audio, digitized it, and generated "pseudo video" from the bits, storing 96 bits—three stereo pairs of 16-bit samples ...