Patent ID: 7560013

Claim:
A sensor comprising a) an electrolytic cell having an anode that adsorbs ethylene, b) means for measuring current created by an electrocatalytic reaction of ethylene at the anode, c) and intake means for supplying a sample gas to the anode, wherein the electrolytic cell includes (1) a front housing that includes a gas inlet and a gas outlet, (2) a rear housing that includes a cavity for containing said electrolyte; and (3) an anode positioned between said front and rear housings, wherein said anode is supported to minimize or eliminate flexing and is exposed on one side to the electrolyte contained in the cavity in said rear housing and on the other side to a sample gas in the front housing, and further wherein the front housing includes a microchannel geometry or surface features which produce turbulent flow characterized by a Reynolds number of at least 500 in a sample gas flowing through said front housing at a flow rate of from 5 to 3000 sccm and still further wherein the front housing functions as a working electrode and the rear housing contains multiple support pegs which provide mechanical support and current collection capability to the anode, wherein the electrolytic cell detects the presence of ethylene in a gas stream at levels as low as 10 parts per billion.