Sensor for detecting the quality of a fluid

摘要

A device for measuring the quality of an operating substance and/or additive, in particular a reduction agent, stored in a tank, includes a reference container connected to the operating substance and/or the additive via a semi-permeable diaphragm, in which the reference container is filled with a medium which has a known osmotic pressure relative to the used operating substance and/or additive.

主权项

1. A device for measuring a quality of an operating substance, additive and/or reduction agent, stored in a tank, comprising:
a reference container connected to the operating substance, additive and/or reduction agent via a semi-permeable diaphragm, wherein the reference container is filled with a medium having a known osmotic pressure relative to the operating substance, additive and/or reduction agent, and wherein a pressure change in the reference container deforms at least one flexible elements such that the at least one flexible element seals a tank outlet of the tank.