Offshore Gas Well Flow and Orifice Metering System: An Overview

Ultrasonic 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...

Ramp Metering in the Netherlands: an Overview

Dynamic traffic management is an important part of the Dutch transport policy. All kinds of measures have been implemented and assessed on the motorway network, such as the motorway traffic management system with speed limits and queue tail warning, ramp metering, variable message signs, dedicated lanes, peak lanes, incident management, etc. In this paper the focus is on ramp metering, which is...

Evaluation 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...

City Natural Gas Metering

Gas Flow Metering Using the PSO Optimized Interval Type- 2 Fuzzy Neural Network

Orifice flow meter is one of the most common devices in industry which is used for measuring the gas flow. This system includes an orifice plate, temperature and pressure transmitters, and a flow computer. The flow computer is used for collecting information related to temperature, pressure, and their differences under various conditions. Also the flow computer can calculate the flow rate of ga...