Detection of the presence or absence of a gas bubble by dynamic sensor response
First Claim
1. A method for detecting the presence or absence of a gas bubble in a liquid to be measured, where the gas bubble, if present, is in at least partial contact with a sensitive region of a sensor in a measuring chamber, the sensor for determining the concentration of a gaseous component dissolved in the liquid, the method comprising:
- setting a gas partial pressure, which differs from an expected value of the gas partial pressure of the gaseous component in the liquid to be measured, at the sensor using a select one of;
an aqueous liquid, a gas, and a mixture of gases containing the gaseous component to be determined in suitable concentration;
exposing the sensor to the liquid to be measured;
waiting until the liquid to be measured attains standstill;
recording a signal from the sensor as a function of time until the signal becomes constant; and
inferring the presence or absence of a gas bubble from a variation of the signal over time.
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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 a sensor positioned within a measuring chamber, wherein the sensor is configured to determine the concentration of a gaseous component dissolved in a liquid, the sensor comprising a sensitive region; setting a gas partial pressure at the sensor, wherein the gas partial pressure differs from an expected value of the gas partial pressure of the gaseous component of a liquid to be measured; exposing the sensor to the liquid to be measured; resting the liquid until standstill is attained; recording a signal from the sensor as a function of time until the signal becomes constant; and detecting the presence or absence of a gas bubble from the variation of the signal over time. The gas bubble, if present, is in at least partial contact with the sensitive region of the sensor.
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Citations
11 Claims
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1. A method for detecting the presence or absence of a gas bubble in a liquid to be measured, where the gas bubble, if present, is in at least partial contact with a sensitive region of a sensor in a measuring chamber, the sensor for determining the concentration of a gaseous component dissolved in the liquid, the method comprising:
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setting a gas partial pressure, which differs from an expected value of the gas partial pressure of the gaseous component in the liquid to be measured, at the sensor using a select one of;
an aqueous liquid, a gas, and a mixture of gases containing the gaseous component to be determined in suitable concentration;exposing the sensor to the liquid to be measured; waiting until the liquid to be measured attains standstill; recording a signal from the sensor as a function of time until the signal becomes constant; and inferring the presence or absence of a gas bubble from a variation of the signal over time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification