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1. (WO2001031327) ELECTROCHEMICAL GAS SENSOR

Pub. No.:    WO/2001/031327    International Application No.:    PCT/GB2000/004132
Publication Date: Fri May 04 01:59:59 CEST 2001 International Filing Date: Fri Oct 27 01:59:59 CEST 2000
IPC: G01N 27/49
G01N 33/00
Applicants: CENTRAL RESEARCH LABORATORIES LIMITED
AUSTEN, Malcolm, Trayton
DODGSON, John, Robert
Inventors: AUSTEN, Malcolm, Trayton
DODGSON, John, Robert
Title: ELECTROCHEMICAL GAS SENSOR
Abstract:
An electrochemical gas sensor (10) including a first planar substrate (18) having at least one planar electrode (14) formed thereon, thereby forming a first electrode assembly, and a housing (12) defining a reservoir (20) which, in use, contains liquid electrolyte for contacting the electrode(s), the housing having a first sealing face (36) to which the first electrode assembly is sealed, the sealing face comprising conducting portions (40, 42, 44, 46, 48) electrically isolated one from another, wherein a portion of at least one electrode (14) is in contact with a respective conducting portion (40, 42, 44, 46, 48) so as to provide a means of external electrical connection to the electrode(s), and wherein the conductive portions (40, 42, 44, 46, 48) and non-conductive portions (50) of the housing (12b) are co-moulded. This sensor has a relatively small number of component parts and is relatively cheap and easy to manufacture. It also provides a cheap and reliable way of forming external electrical connections to the electrodes.