Pressure indicator
First Claim
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1. A method of measuring pressure inside of a high pressure vessel, comprising:
- a) compressing a substance at a first pressure to create a preform having a first density;
b) placing the preform in the high pressure vessel; and
c) subjecting the preform to a second pressure in the high pressure vessel, greater than the first pressure, thereby changing the preform to a second density, greater than the first density, whereby the second pressure can be determined by measuring a change in density of the preform.
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Abstract
Pressure is measured inside of a high pressure vehicle. A substance is compressed at a first pressure to create a preform having a first density. The preform is placed inside of a high pressure vessel and subjected to a second pressure, greater than the first pressure. The preform therefore changes in density to a second density, greater than the first density, whereby the second pressure can be determined. The method may also be used in determining the pressure inside of a food product during food processing and a high pressure vessel.
24 Citations
16 Claims
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1. A method of measuring pressure inside of a high pressure vessel, comprising:
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a) compressing a substance at a first pressure to create a preform having a first density;
b) placing the preform in the high pressure vessel; and
c) subjecting the preform to a second pressure in the high pressure vessel, greater than the first pressure, thereby changing the preform to a second density, greater than the first density, whereby the second pressure can be determined by measuring a change in density of the preform. - View Dependent Claims (2, 3)
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4. A method of monitoring pressure inside of a high pressure vessel during food processing, comprising:
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a) placing a food product inside of a high pressure vessel;
b) placing a preform, having a first density, in the high pressure vessel; and
c) subjecting the food product and preform to a high pressure in the vessel, thereby changing the density of the preform, whereby the pressure in the vessel can be determined by measuring the change in the density of the preform. - View Dependent Claims (5, 6, 7)
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8. A method of measuring pressure inside of a food product, while the food product is subjected to high hydrostatic pressure, comprising:
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a) placing a food product inside of a high pressure vessel;
b) placing a preform, having a first density, in the food product; and
c) subjecting the food product and preform to a high pressure in the vessel, thereby changing the density of the preform, whereby the pressure in the food can be determined by measuring the change in the density of the preform. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification