منابع مشابه
Evolution of Wet Gas Venturi Metering and Wet Gas Correction Algorithms
The Venturi meter is a straightforward pipeline device used for the metering of gas and liquids. This article presents a brief summary of the creation and characterisation of the modern Venturi meter, including the historic development of public domain algorithms to derive two phase (gas and liquid) flow rates from differential pressure measurements. The use of Venturi meters in multiphase oil ...
متن کاملCorrecting a Coriolis Meter for Two Phase Oil & Gas Flow
It is also common for flowmeters to be installed downstream of a two or three phase separator. If the well conditions change or the separator has been incorrectly sized, then it is possible that the oil liquid outlet may have some gas carry under. The effects of gas entrainment on the output of ultrasonic and Coriolis meters has been reported previously [1] [2]. It is already known that gas ent...
متن کاملMicro Coriolis Mass Flow Sensor for Chemical Micropropulsion Systems
We have designed a micromachined micro Coriolis flow sensor for the measurement of hydrazine (N2H4, High Purity Grade) propellant flow in micro chemical propulsion systems [1]. The sensor measures mass flow up to 6 mg/s for a single thruster or up to 24 mg/s for four thrusters. The sensor will first be used for measurement and characterization of the micro thruster system in a simulated space v...
متن کاملUltrasonic Transducers for Gas and Liquid Flow Metering
Accurate fluid flow metering is essential for modern process control, and ultrasonic flow meters are well established in this area. However, the specific acoustic impedance mismatch for most piezoelectric ultrasonic transducers is different when operating liquids and gases, hence there are problems measuring two-phase flows when using a single type of piezoelectric transducer in a flow meter. T...
متن کاملEvaluation procedures of ultrasonic signals in gas flow metering
In technical processes very often signals are generated which are complex modulated and superposed by stochastic disturbances or noise. A typical example is an ultrasonic wave passing a streaming fluid perpendicularly which is complex modulated by stochastically distributed turbulences. The signal can be demodulated digitally by undersampling to separate the narrow sidebands. The complex modula...
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ژورنال
عنوان ژورنال: Measurement and Control
سال: 2008
ISSN: 0020-2940
DOI: 10.1177/002029400804100703