WAREWASH MACHINE CHEMICAL SENSOR AND RELATED SYSTEM AND METHOD

摘要

A flow through chemical sensor (68, 70, 72) includes a housing (80) having a through passage (86) along which chemical can flow, a sidewall of the housing having first (88) and second openings (90) that communicate with the through passage (86). A first electrode (92) is mounted on the housing (80) and aligned with the first opening (88), the first electrode (92) of a plate configuration with a unitary depression (108) that extends through the first opening (88) and to a peripheral edge of the through passage (86). A second electrode (94) is mounted on the housing (80) and aligned with the second opening (90), the second electrode (94) of a plate configuration with a unitary depression (110) that extends through the second opening (90) and to the peripheral edge of the through passage (86). A method of detecting presence or absence of chemical is also provided.