Acoustic transducer
First Claim
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1. An acoustic transducer for measuring a property of a fluid, the acoustic transducer comprising:
- an acoustic pulse generator; and
a buffer assembly between the pulse generator and the fluid, the buffer assembly being composed of a core and a sleeve shrink fitted over the core to form a cladding that reduces dispersion of the acoustic pulses traveling through the core.
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Abstract
An acoustic transducer for measuring a property of a fluid includes an acoustic pulse generator and buffer assembly. The buffer assembly is between the pulse generator and the fluid. The buffer assembly is composed of a core and a sleeve shrink fitted over the core to form a cladding layer. The cladding layer reduces dispersion of the acoustic pulses traveling through the core.
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Citations
29 Claims
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1. An acoustic transducer for measuring a property of a fluid, the acoustic transducer comprising:
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an acoustic pulse generator; and
a buffer assembly between the pulse generator and the fluid, the buffer assembly being composed of a core and a sleeve shrink fitted over the core to form a cladding that reduces dispersion of the acoustic pulses traveling through the core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. In combination with an apparatus including a conduit through which fluid flows, the improvement comprising:
an acoustic transducer for measuring a property of a fluid, the acoustic transducer including an acoustic pulse generator and a buffer assembly between the pulse generator and the fluid, the buffer assembly being composed of a core formed of a low thermal conductivity material and a sleeve shrink fitted over the core to form a cladding that reduces dispersion of the acoustic pulses traveling through the core. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A sampling system comprising:
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a fluid inlet for receiving a fluid;
a dilution inlet for receiving a dilution gas;
a mixing section for mixing at least a portion of the fluid with the dilution gas;
a collection section for collecting a sample of the mixture; and
a flow meter for measuring a flow related to the sampling system, the flow meter including an acoustic transducer for measuring the flow, the acoustic transducer including an acoustic pulse generator and a buffer assembly between the pulse generator and the fluid, the buffer assembly being composed of a core formed of a low thermal conductivity material and a sleeve shrink fitted over the core to form a cladding that reduces dispersion of the acoustic pulses traveling through the core. - View Dependent Claims (27, 29)
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28. A sampling system comprising:
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a sample line for sampling a fluid from a main conduit;
a flow meter for measuring a flow of the fluid through the main conduit, the flow meter including an acoustic transducer for measuring the flow, the acoustic transducer including an acoustic pulse generator and a buffer assembly between the pulse generator and the fluid, the buffer assembly being composed of a core formed of a low thermal conductivity material and a sleeve shrink fitted over the core to form a cladding that reduces dispersion of the acoustic pulses traveling through the core;
a dilution inlet for receiving a dilution gas;
a mixing section for mixing the fluid flow from the sample line with the dilution gas at a generally fixed ratio;
a collection section for sampling the mixture, the mixture being sampled at a rate generally proportional to the flow of the fluid through the main conduit
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Specification