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  • New Developments in Thermal Dispersion Mass Flow Meters: In-the-Field Compensation for Changes in Natural Gas Composition
    The flow of natural gas in pipelines is often complicated by changes in the composition of the gas. The method described in this paper solves the problem of variable composition via a new four-temperature mass flow sensor. The new flow sensor feeds its measurements into the algorithms
  • Take Out The Shake
    Here's how to eliminate instability and oscillations in hydraulic positioncontrol systems. One issue that designers of hydraulic position-control equipment often face is the low damping inherent in such systems -- which usually consist of a hydraulic actuator, servovalve, position sensor
  • Electrohydraulic Actuators
    the sensor interact with the magnetic field and return a sonic pulse. Distance can be determined by measuring the transmission/reception time interval. Positioning accuracy is 0.001 to 0.003 in. Another way to accurately control position is to hydraulically amplify the motion of a stepping motor

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