Thermal protection for electroanalytical cell and amperometric probe
First Claim
1. In a membrane-enclosed amperometric probe comprising an elongated and generally cylindrical body having a sensor face at one end of said body;
- an electrolyte space covered by said membrane and in contact with at least two electrodes; and
electrical connecting means extending from said electrodes through said body to a region near the other end of said body;
the improvement consisting essentially of said body comprising at least two elongated fluid-passing channels formed between coaxially arranged interfitting tubular members extending in axial direction through said body from a first region near said one end of said body to a second region near said other end of said body;
said channels having mutually communicating ends in said first region and separate fluid-feeding ends in said second region.
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Accused Products
Abstract
A method of thermal protection of a membrane-enclosed amperometric cell of the type comprising an electrolyte within an electrolyte space containing electrodes and enclosed by a semipermeable membrane which defines a sensor face; heat exchange within said cell is effected for controlled heat compensation of the electrolyte when the sensor face is exposed to temperatures outside of the operative temperature range of the cell.
A membrane-enclosed amperometric probe having an elongated body provided with a sensor face at one end of the body and with electrical electrode connections extending through the probe body; the body includes at least two elongated fluid-passing channels formed between a pair of coaxially arranged interfitting tubular members that extend in axial direction through the body from a first region near the one body end to a second region near the other body end; the channels have mutually communicating ends in the first region and separate fluid-feeding ends in the second region so as to permit passing a fluid through the probe body.
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Citations
15 Claims
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1. In a membrane-enclosed amperometric probe comprising an elongated and generally cylindrical body having a sensor face at one end of said body;
- an electrolyte space covered by said membrane and in contact with at least two electrodes; and
electrical connecting means extending from said electrodes through said body to a region near the other end of said body;
the improvement consisting essentially of said body comprising at least two elongated fluid-passing channels formed between coaxially arranged interfitting tubular members extending in axial direction through said body from a first region near said one end of said body to a second region near said other end of said body;
said channels having mutually communicating ends in said first region and separate fluid-feeding ends in said second region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- an electrolyte space covered by said membrane and in contact with at least two electrodes; and
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12. In a membrane-enclosed amperometric probe comprising an elongated generally cylindrical body having a frontal sensor face at one end of said body;
- and electrolyte space covered by said membrane and in contact with at least two electrodes; and
electrical connecting means extending from said electrodes through said body to a region near the other end of said body;
the improvement consisting of said body including a thermal shield arranged within a jacket and including a heat conducting tubular member which extends through said body in an axial direction from a first region near said one end of said body to a second region thereof near said other end;
said tubular member having a surface in contact with a channel for passing a heat exchange fluid through said body, said channel not being in fluid communication with said electrolyte space. - View Dependent Claims (13, 14)
- and electrolyte space covered by said membrane and in contact with at least two electrodes; and
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15. In a heat-sterilizable oxygen probe comprising a membrane-enclosed amperometric cell having a sensor face at a frontal portion of an elongated body provided with a cylindrical jacket adjacent said sensor face and with means for maintaining said sensor face and a portion, at least, of said jacket immersed in a biodegradeable medium;
- the improvement consisting essentially of said elongated body including within said cylindrical jacket a pair of coaxially arranged interfitting tubular members defining at their interface a channel means for passing a cooling fluid from an external source through said probe and through a portion thereof near said sensor face when said probe is subjected to heat-sterilizing conditions.
Specification