Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
232 words
In a nuclear magnetic resonance system for industrial process monitoring comprising: (a) means for accessing successive samples from an industrial process, placing them in a sample measuring region and discarding successive such samples from said sample measuring region, (b) means for applying a base magnetic field to the sample measuring region to effect precession of sample nuclei and for applying a resonant excitation pulse to the sample measuring region to modify the precession and means defining receive antenna coil means and signal translating means interacting with a sample in said region to detect relaxation of the sample at the coil means as a free induction decay signal which is measurable as a free induction decay curve via said signal translating means, (c) means for digitizing the free induction decay curve and automatically analyzing the digitized curve to zero axis intercepts of Gaussian and exponential components of the decay curve and extracting a ratio of the intercept of one of said components to the sum of intercepts of said components, the improvement comprising the provision therein of means for extending each of the said decay curves established in multiple repetitions of the said curve establishment and automatic analysis sequence by Hahn spin-echo re-focus/decay to capture data related to a further sub-component(s) of the sample for enhancing the accuracy of the ratio determination of (c) above and/or to identify proportion of the further sub-component(s).
Claim 2
Dependent Claim
232 words
In a nuclear magnetic resonance system for industrial process monitoring comprising: (a) means for accessing successive samples from an industrial process, placing them in a sample measuring region and discarding successive such samples from said sample measuring region, (b) means for applying a base magnetic field to the sample measuring region to effect precession of sample nuclei and for applying a resonant excitation pulse to the sample measuring region to modify the precession and means defining receive antenna coil means and signal translating means interacting with a sample in said region to detect relaxation of the sample at the coil means as a free induction decay signal which is measurable as a free induction decay curve via said signal translating means, (c) means for digitizing the free induction decay curve and automatically analyzing the digitized curve to zero axis intercepts of Gaussian and exponential components of the decay curve and extracting a ratio of the intercept of one of said components to the sum of intercepts of said components, the improvement comprising the provision therein of means for extending each of the said decay curves established in multiple repetitions of the said curve establishment and automatic analysis sequence by Hahn spin-echo re-focus/decay to capture data related to a further sub-component(s) of the sample for enhancing the accuracy of the ratio determination of (c) above and/or to identify proportion of the further sub-component(s).
Claim 3
Dependent Claim
20 words
System in accordance with claim 1 wherein two pi refocus pulses are applied for generation of the Hahn spin echoes.
Claim 4
Dependent Claim
36 words
System in accordance with claim 1 and further comprising means for determining a time window for gating spin echo detection at a correct zero-axis intercept relatable to an original intercept of the free induction decay curve.
Claim 5
Dependent Claim
39 words
System in accordance with claim 3 and further comprising means to effect such time window determination and also to compensate for attenuation of the spin echo response relative to initial response of the free induction decay by off-resonance comparison.
Claim 6
Dependent Claim
12 words
System in accordance with claim 1 constructed and arranged to provide proportionality.
Claim 7
Dependent Claim
13 words
System in accordance with claim 1 constructed and arranged to provide crystallinity output.
Claim 8
Dependent Claim
13 words
System in accordance with claim 1 constructed and arranged to provide moisture output.
Claim 9
Dependent Claim
13 words
System in accordance with claim 1 constructed and arranged to provide density output.