Method for magnetic field tracking in a NMR check weighing system
First Claim
1. A method for use in a magnetic resonance check weighing system for samples on a production line, the magnetic resonance check weighing system having a magnetic field, comprising the steps of:
- obtaining a free induction decay signal from a magnetic resonance measurement of the sample;
monitoring from the free induction decay signal, during check weighing of production samples, the deviation of the resonance frequency of the magnetic resonance measurement from a preselected resonance frequency; and
adjusting the magnetic field to maintain the preselected resonance frequency.
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Abstract
A method (10) insures that the characteristics of the magnetic field used in a magnetic resonance check weighing system (20) for samples in vials (22) on a production line track deviations from the resonant frequency of the sample. The method (10) includes the steps of obtaining (50) a free induction decay signal from a magnetic resonance measurement of the sample, monitoring (52) from the free induction decay signal the deviation of the resonance frequency of the magnetic resonance measurement from a preselected resonance frequency; and adjusting (62) the magnetic field to maintain the preselected resonance frequency.
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Citations
7 Claims
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1. A method for use in a magnetic resonance check weighing system for samples on a production line, the magnetic resonance check weighing system having a magnetic field, comprising the steps of:
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obtaining a free induction decay signal from a magnetic resonance measurement of the sample;
monitoring from the free induction decay signal, during check weighing of production samples, the deviation of the resonance frequency of the magnetic resonance measurement from a preselected resonance frequency; and
adjusting the magnetic field to maintain the preselected resonance frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification