DEVICE AND METHOD FOR DETERMINING AT LEAST ONE FLOW PARAMETER
First Claim
1. A device for determining at least one flow parameter, comprising:
- a fluidic series connection comprising, in this order, a first flow restriction, a first measurement area, a second flow restriction, and a second measurement area;
a first sensor for detecting a quantitative first measure of the pressure in the first measurement area;
a second sensor for detecting a second quantitative measure of the pressure in the second measurement area; and
an evaluator configured to determine, while using the measures detected by the first and second sensors, whether there is an occlusion of the first flow restriction, of the second flow restriction or of a fluid area adjoining the second measurement area.
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Accused Products
Abstract
A device for detecting at least one flow parameter includes a fluidic series connection of a first flow restriction, a first measurement area, a second flow restriction, and a second measurement area. A first sensor is provided for detecting a quantitative first measure of a pressure existing in the first measurement area. A second sensor is provided for detecting a quantitative second measure of a pressure existing in the second measurement area. An evaluator is provided which is configured to determine, while using the measures detected by the first and second sensors, a flow rate of a fluid flowing through the series connection, and/or to determine whether there is an occlusion of the first flow restriction, of the second flow restriction, or of a fluid area adjoining the second measurement area.
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Citations
25 Claims
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1. A device for determining at least one flow parameter, comprising:
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a fluidic series connection comprising, in this order, a first flow restriction, a first measurement area, a second flow restriction, and a second measurement area; a first sensor for detecting a quantitative first measure of the pressure in the first measurement area; a second sensor for detecting a second quantitative measure of the pressure in the second measurement area; and an evaluator configured to determine, while using the measures detected by the first and second sensors, whether there is an occlusion of the first flow restriction, of the second flow restriction or of a fluid area adjoining the second measurement area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 23, 24)
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- 13. The device as claimed in claim I, wherein the first and second flow restrictions are implemented by compressed areas of an elastic tubing, and the measurement areas are implemented by non-compressed areas of the elastic tubing.
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18. A method of determining at least one flow parameter, comprising:
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introducing a fluid into a fluidic series connection comprising, in this order, a first flow restriction, a first measurement area, a second flow restriction, and a second measurement area, detecting a quantitative first measure of a pressure in the first measurement area, and detecting a quantitative second measure of a pressure in the second measurement area; and determining whether an occlusion of the first flow restriction, of the second flow restriction or of a fluid area adjoining the second measurement area is present while using the detected quantitative first and second measures. - View Dependent Claims (19, 20, 21, 22)
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Specification