Dishwasher with conductivity measurement

摘要

A dish washer comprises a washing tub having a sump, at least one spraying nozzle located within the washing tub, means for feeding fresh water into the sump, a circulation pump for circulating process water from the sump to the spraying nozzle and a conductivity sensor for measuring the conductivity of the fresh and/or the process water. In order to enable use of a single conductivity sensor for measuring the conductivity of both the fresh and the process water, the conductivity sensor is located in a conduit for feeding fresh water into the sump and there further is provided a bypass line which is arranged to cause process water to flow through the conductivity sensor when the circulation pump is in operation.