Gamma-irradiation-compatible reference gel
AssigneeRosemount Inc.
InventorJinbo Hu
Life of this patent
Estimating the term…
Abstract
A gel for use in a pH or an ORP sensor, components of the gel comprising water, a reference electrolyte salt, a buffering system for adjusting pH of the gel, and a polymeric gelling agent, and the gel does not degrade under gamma irradiation.
Claims10
A gel for use in a pH or an ORP sensor, components of the gel comprising water, a reference electrolyte salt, a buffering system for adjusting pH of the gel, and a polymeric gelling agent that controls a viscosity of the gel wherein the viscosity is dependent on concentration and/or molecular weight of the polymeric gelling agent, or both,
- wherein the gel does not degrade under gamma irradiation, and
- wherein the polymeric gelling agent is polyethylene glycol having a molecular weight (Mw) of 15,000 or less.
A pH sensor comprising a housing and a gel within the housing, the gel comprising a reference electrolyte salt, a buffering system for adjusting pH of the gel, and a polymeric gelling agent that controls the viscosity of the gel wherein the viscosity is dependent on concentration and/or molecular weight of the polymeric gelling agent, or both,
- wherein the gel does not degrade under gamma irradiation, and
- wherein the polymeric gelling agent is polyethylene glycol having a molecular weight (Mw) of 15,000 or less.
Dependencies are inferred from the claim text.