Patent ID: 9599583
Date: 2017-03-21
CPC Classifications: G01N

Claim:
1. A humidity sensor element comprising: a dielectric substrate; a nonporous conductive electrode having a first conductive member electrically coupled thereto, wherein the nonporous conductive electrode is disposed on the dielectric substrate; a permeable conductive electrode having a second conductive member electrically coupled thereto, wherein the permeable conductive electrode has a thickness in a range of from 4 to 10 nanometers, wherein the permeable conductive electrode is parallel to the nonporous conductive electrode, and wherein the permeable conductive electrode is permeable by water vapor; a detection layer sandwiched between the nonporous conductive electrode and the permeable conductive electrode, wherein the detection layer comprises a copolymer having monomeric units comprising wherein M represents H, or an alkali metal, wherein the humidity sensor element has a capacitance detectable between the nonporous conductive electrode and the permeable conductive electrode.