Device for capacitive measurement of polar components in fluid has plastic fluid container placed between sensor surfaces with reproducible constant gaps or no gaps

摘要

The device has two separate capacitor plates (20) (sensor surfaces) between which the fluid is placed and the detected relative dielectric constant represents a measure of the polar components in the fluid. The fluid is placed in a plastic container (11), which is placed between the sensor surfaces so that the container surfaces are in contact with the sensor surfaces at least approximately gap-free or with reproducible constant air gaps.