Reference electrode and ion concentration measurement device
AssigneeHoriba, Ltd.
InventorMakoto Kato
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Abstract
This invention prevents leakage of an internal liquid and breakage of a reference electrode resulting from volume expansion of the internal liquid due to the congelation of the internal liquid, and comprises a vessel that forms a sealed space, an internal liquid that is contained in the vessel, an internal electrode that is immersed in the internal liquid, an ion conduction part that is arranged on a wall of the vessel and that electrically connects the internal liquid and a measurement sample, and a volume expansion absorption mechanism 6 at least a part of which is immersed in the internal liquid and that absorbs volume expansion of the internal liquid due to congelation of the internal liquid.
Claims5
A reference electrode comprising:
- a vessel that forms a sealed space,
- an internal liquid that is contained in the vessel,
- an internal electrode that is immersed in the internal liquid,
- an ion conduction part that is arranged on a wall of the vessel and that electrically connects the internal liquid and a measurement sample, and
- a volume expansion absorption mechanism at least a part of which is immersed in the internal liquid and that absorbs volume expansion of the internal liquid due to congelation of the internal liquid,
- wherein the internal liquid contacts the exterior surface of the volume expansion absorption mechanism, and
- wherein the volume expansion absorption mechanism comprises an elastic transform part that makes an elastic transformation in accordance with the volume expansion of the internal liquid and a gaseous closed layer that is arranged to make contact with the elastic transform part.
Dependencies are inferred from the claim text.