Sensor, measuring device, and measuring method

摘要

A sensor measures a sample in a measuring cell including a helix conductor. The shell structure of the measuring cell is made of an electrically non-conductive material. The measuring cell and at least part of the helix conductor are placeable inside a chamber. A radio-frequency signal input element couples a radio-frequency signal to the chamber to form a helix resonance. A radio-frequency signal output element is responsive to a helix resonance of the helix conductor and transmits a radio-frequency signal for measurement. A device for measuring a sample in a measuring cell includes the sensor, a radio-frequency signal source, and a measuring and control part. The radio-frequency signal source produces a radio-frequency signal to the input element. The measuring and control part measures a property of a sample on the basis of a resonance frequency.

主权项

1. A sensor for measuring a sample in a measuring cell, the sensor comprising:
a helix conductor that is at both ends short-circuited to a shell structure and located at the measuring cell elsewhere than in the space enclosed by the measuring cell, the shell structure of the measuring cell being made of an electrically non-conductive material; a chamber, inside which the measuring cell and at least part of the helix conductor are placeable and which comprises a shell structure made of an electrically conductive material, the coupling of both ends of the helix conductor to the shell structure of the chamber being the same; a radio-frequency signal input element that is adapted to couple with loop coupling a radio-frequency signal inductively to the helix conductor in the chamber for the purpose of creating at least one helix resonance in the helix conductor; and a radio-frequency signal output element that is responsive to at least one helix resonance of the helix conductor by forming with loop coupling an inductive coupling to the resonating helix conductor and that is adapted to transmit a radio-frequency signal for measurement.