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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).
Because they are used for domestic water measurement, piston meters, also known as rotary piston or semi-positive displacement meters, are the most common flow measurement devices in the UK and are used for almost all meter sizes up to and including 40 mm (1 + 1 ⁄ 2 in). The piston meter operates on the principle of a piston rotating within a ...
A magnetic flow meter (mag meter, electromagnetic flow meter) is a transducer that measures fluid flow by the voltage induced across the liquid by its flow through a magnetic field. A magnetic field is applied to the metering tube, which results in a potential difference proportional to the flow velocity perpendicular to the flux lines.
The mass flow meter does not measure the volume per unit time (e.g. cubic meters per second) passing through the device; it measures the mass per unit time (e.g. kilograms per second) flowing through the device. Volumetric flow rate is the mass flow rate divided by the fluid density. If the density is constant, then the relationship is simple.
One of them pleaded guilty in September of 1992 to first-degree manslaughter and was sentenced to 8 1/3 to 25 years in jail. He was cut loose in 2009 on parole, which discharged him in August of 2016.
Before the Giants' home games in Weeks 14 and 15, fans chartered planes that flew banners expressing their displeasure with the way the team's 2-13 season has gone, targeting owner John Mara.
Jim Carrey isn't swearing off acting for good.. The actor returns to the big screen in the new sequel Sonic the Hedgehog 3 after previously saying in 2022 that he was "being fairly serious" about ...
A measuring system shall be equipped with an effective air/vapor eliminator or other automatic means to prevent the passage of air/vapor through the meter. ref.[Handbook 44 – 2019 3.30. S.2.1.] [specify] Measuring systems shall incorporate a gas elimination device for the proper elimination of any air or undissolved gases which may be ...