Patent
Fluid flow metering method and system
TLDR
In this paper, a fluid flow metering method and system using digital signals and logic for producing a compensated manifestation of fluid flow by the mathematical multiplication of two or more sensed parameters, one parameter being the fluid flow rate and the other one or more parameters being related to a condition of the fluid such as its constituency, pressure, density, dielectric constant, temperature or the like.Abstract:
A fluid flow metering method and system using digital signals and logic for producing a compensated manifestation of fluid flow by the mathematical multiplication of two or more sensed parameters, one parameter being a fluid flow rate and the other one or more parameters being related to a condition of the fluid such as its constituency, pressure, density, dielectric constant, temperature or the like, where the parameters are represented by series of electrical pulses The digital output signal pulses of the flowmeter are related to fluid flow, and are used to gate packets of high frequency pulses from a transducer The duration of the pulse packet is designed to be less than spacing between two adjacent flow pulses at maximum flow rate, and the exact number of high frequency pulses in each packet is related to the condition of the fluid as sensed by the transducer In one embodiment, the duration of the packet is a function of time in which case the pulses in the packet may be gated from a continuous series of high frequency pulses having a frequency related to the condition of the fluid The flow pulses recorded in a first counter provide a manifestation of gross fluid flow The pulses from the packets recorded in a second counter provide manifestation of compensated fluid flow Subtraction of the pulse trains through suitable scalers can yield a manifestation directly related to the compensated fluid flow in the same units as are used in providing gross fluid flow A transducer output linearizing circuit and a flowmeter bearing friction compensating circuit may optionally be incorporated in the described systemread more
Citations
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Patent
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References
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Patent
Net oil computer
TL;DR: In this article, a train of clock pulses generated by a stream of oil well production fluids is characterized into a nonlinear analog ramp and compared with a matching non-linear analog signal representative of the percentage of water in the oil/water mixture of production fluids.
Patent
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TL;DR: In this paper, a correction signal, either voltage or a second pulse sequence, is generated to correspond to a correction factor for adjusting the fluid to a standard temperature for each unit of fluid.