Compact electrochemical cell for gas detection

US4769122A · kind A · utility

Assignee

• BACHARACH, INC. · US

Inventors

• Carl A. Marrese · Penfield, US
• David J. D'Amico · Springdale Township, US
• Peter M. Noble · Lijsterbesstraat, US
• Robert L. Novack · Cape Coral, US
• John H. Wolf · Monroeville, US
• Andrew A. Sicree · Dayton, US

Key dates

• Filing date: Jul 10, 1987
• Grant date: Sep 6, 1988
• Expiry date: Jul 10, 2007

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/4045
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An electrochemical cell for use in gas detection includes a cell body having an electrolyte cavity and a separate sensor cavity. The sensor cavity holds stacked sensor elements including a counter electrode, electrolyte mat, reference electrode and sensing electrode. A wick draws the electrolyte from the electrolyte cavity to the electrolyte mat. The sensing electrode closes off the sensor cavity and seals the counter and reference electrodes therein. The only gas which contacts the counter and reference electrodes is that which passes through the sensing electrode or is generated by the counter electrode and becomes dissolved in the electrolyte.