ELECTROCHEMICAL GAS SENSOR

摘要

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.