Container for calibrating fluids, and device and method for measuring parameters of a sample of fluid, and oxygen electrode therefor
First Claim
1. A closed container for holding calibrating fluids with a specified pH or partial pressure of gas as a reference in liquid analysis device for measuring parameters of a sample of fluid, comprising:
- an elastic, impermeable thick-wall or barrier type of bag enclosure for containing gases within an aqueous solution, said container having a fluid flow outlet connecting element;
wherein said connecting element is a self-tightening elastic joint comprising rubber materials, said self-tightening elastic joints ensuring tightness of a connection between the container and the device, said joint remaining closed during filling, storing, installing and using of the container in the device, whereby the calibrating fluids maintain a constant concentration of saturating gases within said solution during storage, installation and use of the container.
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Accused Products
Abstract
A device for measuring the parameters of a sample of fluid comprising exchangeable containers for calibrating fluids and an oxygen electrode. The device comprising a measuring chamber having at least two measuring channels with measuring electrodes for determining the acid-base equilibrium parallel introduced into the measuring channel of the device and connected with a common electronic system. The exchangeable containers for calibrating fluids each comprising an elastic, impermeable container for gases with an elastic joint for ensuring tightness of the connection between the container and a device. The oxygen electrode comprising an oxygen electrode of a Clark'"'"'s electrode system with an anode made of an element selected from the VIB group of the periodic system of chemical elements.
24 Citations
10 Claims
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1. A closed container for holding calibrating fluids with a specified pH or partial pressure of gas as a reference in liquid analysis device for measuring parameters of a sample of fluid, comprising:
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an elastic, impermeable thick-wall or barrier type of bag enclosure for containing gases within an aqueous solution, said container having a fluid flow outlet connecting element; wherein said connecting element is a self-tightening elastic joint comprising rubber materials, said self-tightening elastic joints ensuring tightness of a connection between the container and the device, said joint remaining closed during filling, storing, installing and using of the container in the device, whereby the calibrating fluids maintain a constant concentration of saturating gases within said solution during storage, installation and use of the container.
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2. An oxygen electrode in a liquid analysis device for measuring parameters of a sample of fluid, comprising:
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a Clark'"'"'s electrode system; wherein an anode of the electrode system is made of an element selected from the VIB group of the periodic table system of chemical elements, where said measured parameters include pH or partial pressure of gas components in said fluid. - View Dependent Claims (3, 4)
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5. A liquid analysis device for measuring parameters of a sample of fluid, comprising:
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an analyzer and a control unit with a monitor, the analyzer comprising a measuring chamber with measuring electrodes, the measuring chamber being connected with closed, replaceable containers for holding calibrating fluids with a specified pH or partial pressure of gas as a reference and for holding working fluids and into which measuring chamber are introduced a sample of a measured fluid, control elements and operating elements to control the operation of the device and to maintain a constant temperature of the device, as well as computer processing elements for transforming results of measurements into quantities of parameters of the sample of fluid; wherein the device comprises elastic, impermeable, and exchangeable containers for the calibrating fluids, said containers having a connecting element wherein said connecting element is a self-tightening elastic joint comprising rubber materials, said self-tightening elastic joint ensuring tightness of a connection between the container and the device, said joint remaining closed during filling, storing, installing and using of the container in the device, whereby the calibrating fluids maintain a constant concentration of saturating gases during storage, installation and use of the container. - View Dependent Claims (9)
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6. A liquid analysis device for measuring parameters of a sample of fluid, comprising:
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an analyzer and a control unit with a monitor, the analyzer comprising a measuring chamber with measuring electrodes, the measuring chamber being connected with closed, replaceable containers for holding calibrating fluids with a specified pH or partial pressure of gas as a reference and for holding working fluids and into which measuring chamber are introduced a sample of a measured fluid, control elements and operating elements to control the operation of the device and to maintain a constant temperature of the device, as well as computer processing elements for transforming results of measurements into quantities of parameters of the sample of fluid; wherein the device comprises elastic, impermeable, and exchangeable containers for the calibrating fluids, said containers having a connecting element wherein said connecting element is a self-tightening elastic joint ensuring tightness of a connection between the container and the device, said joint remaining closed during filling, storing, installing and using of the container in the device, whereby the calibrating fluids maintain a constant concentration of saturating gases during storage, installation and use of the container; and further comprising oxygen electrodes each comprising a Clark'"'"'s electrode system, wherein an anode of the electrode system is made of an element selected from the VIB group of the periodic table system of chemical elements. - View Dependent Claims (7, 8)
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10. A liquid analysis method for measuring parameters of a sample of fluid, comprising the steps of:
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passing samples of a measured fluid, a calibrating fluid and a working fluid through a measuring chamber having at least two distinct and independent measuring channels at specified intervals of time as performed alternately and sequentially according to pre-planned steps in a proportional time-allocated measuring cycle; measuring physical-chemical properties of the measured fluid and of the calibrating fluids with sets of measuring electrodes; determining quantities of parameters of a sample of fluid on the basis of the measured properties; introducing standard aqueous solutions saturated with gases as well as oxygen taken from air as calibrating fluids for exposure to the measuring electrodes in the measuring chamber; dividing the calibrating fluid standard solutions alternatively with the measured sample of fluid and with the working fluids and in accordance with the measuring cycle among said at least two distinct and independent measuring channels disposed in the measuring chamber, each channel comprising a set of measuring electrodes for determining an acid-base equilibrium state in said fluid sample; and recalculating measurement results for each measuring channel in a common electronic system.
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Specification