Device for measuring solid materials in gas flow, used in fuel cell arrangement, has piezoelectric element whose natural oscillation frequency is altered by catalytic reaction of solid materials or gas flow at catalytic element

摘要

The device (1) has a piezoelectric element (2) with an electrode (3) and a catalytic element (4). The piezoelectric element is coupled to the catalytic element, such that the gas flow (10) is made to pass through the catalytic element. The catalytic reaction of solid materials (11) and/or gas flow at the catalytic element, is configured to alter the natural oscillation frequency of the piezoelectric element. Independent claims are included for the following: (1) fuel cell arrangement; and (2) method for measuring solid materials in gas flow.