Calibration standard, sensor arrangement and use
AssigneeEndress+Hauser Conducta GmbH+Co. KG
InventorsMatthäus Speck, Andreas Bayer, Thilo Krätschmer
Life of this patent
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Abstract
A calibration attachment for adjusting, calibrating, and/or performing a functional check of an optical sensor, which is configured to measure at least one measured variable in a medium by light, wherein the sensor is designed to emit transmitted light of at least one wavelength in the range of 200-700 nm, in particular 200-500 nm, includes a housing and a body, which is arranged in the housing, wherein the body includes praseodymium and cerium, and wherein the body, after excitation with the transmitted light, emits light of a different, in particular longer, wavelength. A sensor arrangement includes such a calibration attachment and use thereof.
Claims22
A calibration attachment for adjusting, calibrating, and/or performing a functional check of an optical sensor, which is configured to measure at least one measured variable in a medium using light, wherein the sensor is configured to emit transmitted light of at least one wavelength in a range of 200-700 nm, the calibration attachment comprising:
- a housing;
- and
- a body, which is disposed in the housing such that the transmitted light from the sensor is incident on the body,
- wherein the body comprises praseodymium and cerium such that the praseodymium and cerium interact synergistically, and
- wherein the body, upon excitation with the transmitted light, emits light of a different wavelength than the at least one wavelength of the transmitted light from the sensor.
A method of adjusting, calibrating, and/or performing a functional check of an optical sensor, the method comprising:
- exciting a body doped with praseodymium and cerium that interact synergistically with light transmitted from the optical sensor, wherein the optical sensor is configured to emit the transmitted light at at least one wavelength in a range of 200-700 nm.
A method of adjusting, calibrating, and/or performing a functional check of an optical sensor, the method comprising:
- exciting a body doped with praseodymium and cerium that interact synergistically with light transmitted from the optical sensor, wherein the optical sensor is configured to determine the content of a polycyclic aromatic hydrocarbon in a sample.
A method of adjusting, calibrating, and/or performing a functional check of an optical sensor, the method comprising:
- exciting a body doped with praseodymium and cerium that interact synergistically with light transmitted from the optical sensor, wherein the optical sensor is configured to determine the content of biomass, including chlorophyll and/or algae.
A method of adjusting, calibrating, and/or performing a functional check of an optical sensor, the method comprising:
- exciting a body doped with praseodymium and cerium that interact synergistically with light transmitted from the optical sensor, wherein the optical sensor is configured to determine the content of a rhodamine and/or fluorescein, including uranine.
Dependencies are inferred from the claim text.