METHODS AND APPARATUS FOR BREATH ALCOHOL TESTING

摘要

A fuel cell assembly (102) includes a fuel cell (104), a fuel cell housing (106, 108) and a diaphragm (170). The fuel cell housing includes an endwall and an inlet port (122) extending through said endwall. The inlet port is for admitting a breath sample into the housing. The diaphragm is coupled within the housing such that a cavity (110) is defined between the housing and the diaphragm. The fuel cell is positioned within the cavity and is substantially concentrically aligned with respect to the inlet port.