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  2. List of measuring instruments - Wikipedia

    en.wikipedia.org/wiki/List_of_measuring_instruments

    A measuring cup, a common instrument used to measure volume. Buoyant weight (solids) Eudiometer, pneumatic trough (gases) Flow measurement devices (liquids) Graduated cylinder (liquids) Measuring cup (grained solids, liquids) Overflow trough (solids) Pipette (liquids) If the mass density of a solid is known, weighing allows to calculate the volume.

  3. Gas pycnometer - Wikipedia

    en.wikipedia.org/wiki/Gas_pycnometer

    A gas pycnometer is a laboratory device used for measuring the density—or, more accurately, the volume—of solids, be they regularly shaped, porous or non-porous, monolithic, powdered, granular or in some way comminuted, employing some method of gas displacement and the volume:pressure relationship known as Boyle's law.

  4. Turndown ratio - Wikipedia

    en.wikipedia.org/wiki/Turndown_ratio

    Turndown ratio refers to the width of the operational range of a device, and is defined as the ratio of the maximum capacity to minimum capacity. For example, a device with a maximum output of 10 units and a minimum output of 2 units has a turndown ratio of 5.

  5. Gas meter - Wikipedia

    en.wikipedia.org/wiki/Gas_meter

    The volume of gas flow provided by a gas meter is just that, a reading of volume. Gas volume does not take into account the quality of the gas or the amount of heat available when burned. Utility customers are billed according to the heat available in the gas. The quality of the gas is measured and adjusted for in each billing cycle.

  6. Gas volume corrector - Wikipedia

    en.wikipedia.org/wiki/Gas_volume_corrector

    Type 1- gas volume corrector with specific types of transducers for pressure and temperature or temperature only. This type of gas volume corrector is powered by battery. Type 2 - a device that converts separate transmitters with external temperature and pressure, or temperature only and for separate calculator, which may be approved separately ...

  7. Positive displacement meter - Wikipedia

    en.wikipedia.org/wiki/Positive_displacement_meter

    A positive displacement meter is a type of flow meter that requires fluid to mechanically displace components in the meter in order for flow measurement. Positive displacement (PD) flow meters measure the volumetric flow rate of a moving fluid or gas by dividing the media into fixed, metered volumes (finite increments or volumes of the fluid ...

  8. Pipe (fluid conveyance) - Wikipedia

    en.wikipedia.org/wiki/Pipe_(fluid_conveyance)

    Since the outside diameter is fixed for a given pipe size, the inside diameter will vary depending on the wall thickness of the pipe. For example, 2" Schedule 80 pipe has thicker walls and therefore a smaller inside diameter than 2" Schedule 40 pipe. Steel pipe has been produced for about 150 years. The pipe sizes that are in use today in PVC ...

  9. Gas collecting tube - Wikipedia

    en.wikipedia.org/wiki/Gas_collecting_tube

    The mass and volume of a displaced amount of gas are determined: At atmospheric pressure , the gas collecting tube is filled with the gas to be investigated and the overall mass is measured. Then the aspirator sucks out much of the gas yielding a second overall mass m s u c k e d {\displaystyle m_{sucked}} measurement.