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Title: The Upgraded Control System Of Primary Liquid Flow Measurement Standard At Nimt
Author: T. Chinarak1 K. Leetang T. Changpan3
Source: Flomeko 2013
Year Published: 2013
Abstract: The liquid piston provers have been widely used as the primary standard for liquid flow measurement. There are many flowmeters which can be used with the prover such as turbine flowmeters, variable area flowmeters, electromagnetic flowmeters, etc. The flowrates from the prover are measured by volumetric method. Thus, the displaced volume of water and the moving distance of the piston during measurement are the key factors. In order to receive the accurate volume, the efficient system for gaining pulses from the linear encoder is needed. Also, temperature and pressure of liquid inside the piston cylinder and the environmental conditions are involved with the measurement.

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