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A gas meter is a specialized flow ... of any natural gas meter type, and the accuracy and range ability of a high ... electric meters, where the test is free and a ...
A gas meter prover is a device to verify the accuracy of a gas meter. Provers are typically used in gas meter repair facilities, municipal gas meter shops, and public works shops. Provers work by passing a known volume of air through a meter, while monitoring the gas meter's register, index, or internal displacement.
Note that meter manufacturers state their products' turndown ratios—a specific product may have a turndown ratio that varies from the list below. [citation needed] A thermal mass flow meter has a turndown ratio of 1000:1. An orifice plate meter has a practical turndown ratio of 3:1. A turbine meter has a turndown ratio of 10:1.
Quality systems (gas chromatographs to measure energy content of natural gas and sampling systems for liquid); Calibration using in-place or mobile provers for liquid, or master-meter for liquid or gas; and; Supporting automation. A typical liquid custody transfer skid includes multiple flowmeters and meter provers. Provers are used to ...
Encoder receiver transmitter (ERT) is a packet radio protocol developed by Itron for automatic meter reading. [1] The technology is used to transmit data from utility meters over a short range so a utility vehicle can collect meter data without a worker physically inspecting each meter. The ERT protocol was first described in U.S. patent ...
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).
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I'm sure there is a minimum requirement, I'm sure it varies from meter to meter. Pressure does effect flow rates, but the diaphragms inside the meter will act accordingly. going below 7"wc should not affect the accuracy of the meter. The index of the meter should indicate accurate flow. If you meter is in question, contact your utility company ...