Method for detecting the presence or absence of a gas bubble in an aqueous liquid
First Claim
1. A method for detecting the presence or absence of a gas bubble in an aqueous liquid, compromising:
- providing an amperometric sensor positioned within a measuring chamber, wherein said amperometric sensor is configured to determine the concentration of a gaseous component dissolved in said liquid, said amperometric sensor comprising a sensitive region;
positioning said liquid in said measuring chamber;
using said amperometric sensor to take at least one first measurement value of said gaseous component from a first portion of said liquid after a predetermined response time, said first portion located in said sensitive region of said sensor;
moving said liquid along in said measuring chamber without significant pressure change in said liquid, such that a second portion of said liquid within said measuring chamber, which had previously been located outside said sensitive region of said amperometric sensor, is positioned in said sensitive region;
using said amperometric sensor to take at least one second measurement value of said gaseous component from said second portion of said liquid; and
detecting the presence or absence of a gas bubble by comparing said first and second measured values, wherein said liquid is free of bubbles in said sensitive region of said amperometric sensor, if said second measured value is higher by a predetermined amount than said first measured value.
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Accused Products
Abstract
A method for detecting the presence or absence of a gas bubble in an aqueous liquid is provided comprising providing an amperometric sensor positioned within a measuring chamber, wherein the amperometric sensor is configured to determine the concentration of a gaseous component dissolved in a liquid, the amperometric sensor comprising a sensitive region; positioning the liquid in the measuring chamber; taking at least one first measurement value of the gaseous component from a first portion of the liquid after a predetermined response time, the first portion located in the sensitive region of the sensor; moving the liquid along in the measuring chamber, such that a second portion of the liquid, which had previously been located outside the sensitive region of the amperometric sensor, is positioned in the sensitive region; taking at least one second measurement value of the gaseous component from the second portion of the liquid; and detecting the presence or absence of a gas bubble by comparing the first and second measured values. The gas bubble, if present, is in at least partial contact with the sensitive region of the amperometric sensor.
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Citations
18 Claims
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1. A method for detecting the presence or absence of a gas bubble in an aqueous liquid, compromising:
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providing an amperometric sensor positioned within a measuring chamber, wherein said amperometric sensor is configured to determine the concentration of a gaseous component dissolved in said liquid, said amperometric sensor comprising a sensitive region; positioning said liquid in said measuring chamber; using said amperometric sensor to take at least one first measurement value of said gaseous component from a first portion of said liquid after a predetermined response time, said first portion located in said sensitive region of said sensor; moving said liquid along in said measuring chamber without significant pressure change in said liquid, such that a second portion of said liquid within said measuring chamber, which had previously been located outside said sensitive region of said amperometric sensor, is positioned in said sensitive region; using said amperometric sensor to take at least one second measurement value of said gaseous component from said second portion of said liquid; and detecting the presence or absence of a gas bubble by comparing said first and second measured values, wherein said liquid is free of bubbles in said sensitive region of said amperometric sensor, if said second measured value is higher by a predetermined amount than said first measured value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for detecting the presence or absence of a gas bubble in an aqueous liquid, compromising:
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providing an amperometric sensor positioned within a measuring chamber, wherein said amperometric sensor is configured to determine the concentration of a gaseous component dissolved in said liquid, said amperometric sensor comprising a sensitive region; positioning said liquid in said measuring chamber such that a first portion of said liquid is located in said sensitive region of said sensor; using said amperometric sensor to take at least one first measurement value of said gaseous component from said first portion of said liquid after a predetermined response time; moving said liquid along in said measuring chamber such that; a second portion of said liquid within said measuring chamber, which had previously been located outside said sensitive region of said amperometric sensor is positioned in said sensitive region, and a bubble, if present within said sensitive region of said sensor when taking said at least one first measurement value, does not move from said sensitive region in response to moving said liquid; using said amperometric sensor to take at least one second measurement value of said gaseous component from said second portion of said liquid; and detecting the presence or absence of a gas bubble by comparing said first and second measured values, wherein said liquid is free of bubbles in said sensitive region of said amperometric sensor, if said second measured value is higher by a predetermined amount than said first measured value. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A system to detect the presence or absence of a gas bubble in an aqueous liquid, compromising:
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an amperometric sensor positioned within a measuring chamber having an open inlet and an open outlet, wherein said amperometric sensor is configured to determine the concentration of a gaseous component dissolved in said liquid, said amperometric sensor comprising a sensitive region, wherein; said measuring chamber is provided for receiving said liquid; and said amperometric sensor is provided for taking at least one first measurement value of said gaseous component from a first portion of said liquid after a predetermined response time, said first portion located in said sensitive region of said sensor; and at least one of a pump and a suction device, to move said liquid along in said measuring chamber without significant pressure change in said liquid, such that a second portion of said liquid within said measuring chamber, which had previously been located outside said sensitive region of said amperometric sensor, is positioned in said sensitive region;
wherein;said amperometric sensor takes at least one second measurement value of said gaseous component from said second portion of said liquid such that the presence or absence of a gas bubble is detected by comparing said first and second measured values, wherein said liquid is free of bubbles in said sensitive region of said amperometric sensor, if said second measured value is higher by a predetermined amount than said first measured value. - View Dependent Claims (18)
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Specification