Deskripsi
HARGA VEMMTEC IGTM Gas Turbine Meter
Spesifikasi HARGA VEMMTEC IGTM Gas Turbine Meter
General
The vemm tec IGTM (International Gas Turbine Meter) is a
highly accurate flow meter, approved for custody transfer
measurement, equipped with electronic pulse outputs and
a mechanical counter. This document explains the dimensions,
ranges, performance, calibration and outputs of the
instrument. It details the installation, safety requirements
and material specifications.
The IGTM measures gas volume flowing through an annular
passage in the meter. The flowing gas volume is totalised
on a local mechanical counter. In addition, low or high
frequency pulse signals are generated to infer the gas flow
and volume. The indicated gas volume is the actual volume
flowing through the meter at the actual temperature and
pressure. The IGTM is available in two models: CT and IM.
The IGTM-CT is used for high accuracy and custody transfer
applications. The IGTM-IM is an economically priced meter
with a good accuracy.
Operation
The operation of the International Gas Turbine Meter is
based on the measurement of the velocity of gas. The flowing
gas is accelerated and conditioned by the meterĀ“s
straightening section. The straightening vanes prepare the
gas flow profile by removing undesired swirl, turbulence
and asymmetry before the gas flows to the turbine wheel.
The dynamic forces of the flowing fluid cause the rotor to
rotate. The turbine wheel is mounted on the main shaft,
with special high precision, low friction ball bearings. The
turbine wheel has helical blades that have a known angle
relative to the gas flow. The conditioned and accelerated
gas drives the turbine wheel with an angular velocity that is
proportional with the gas velocity.
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