Calibration standard, sensor arrangement and use
AssigneeEndress+Hauser Conducta GmbH+Co. KG
InventorsAndreas Bayer, Thilo Krätschmer, Felicia Seichter, Joachim Bolle
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Abstract
The invention discloses a calibration attachment for adjustment, calibration and/or for carrying out a functional check of an optical sensor, which is configured for measuring at least one measurement variable in a medium using light. The sensor is configured for emitting emission light of at least a wavelength in the range of 200-450 nm, comprising a housing and a body arranged in the housing wherein the body comprises praseodymium, and after excitation with the emission light, the body emits light with a longer wavelength. The invention also discloses a sensor arrangement comprising such a calibration attachment, and a use of same.
Claims12
1-11. (canceled)
A calibration attachment for adjusting, calibrating, or carrying out a functional check of an optical sensor, which is designed to measure at least one measured variable in a medium by means of light, wherein the sensor is designed to emit transmitted light at least of a wavelength in the range of 200-450 nm, comprising:
- a housing;
- and
- a body, which is arranged in the housing;
- wherein the body comprises praseodymium;
- and
- wherein the body, after excitation with the transmitted light;
- emits light of a longer wavelength.
The calibration attachment according to 12,
- wherein the housing comprises a receptacle for the sensor.
The calibration attachment according to 12,
- wherein the housing is substantially transparent to the transmitted light.
The calibration attachment according to 12,
- wherein the housing comprises an opening and transmitted light impinges on the body through the opening.
A sensor arrangement, comprising:
- a sensor having:
- at least one light source, wherein the light source emits transmitted light at least of a wavelength in the range of 200-450 nm;
- at least one receiver, which is designed to receive received light of a wavelength of 250-500 nm;
- and
- a calibration attachment;
- wherein the calibration attachment includes:
- a housing;
- and
- a body, which is arranged in the housing;
- wherein the body comprises praseodymium;
- and
- wherein the body, after excitation with the transmitted light, emits light of a longer wavelength;
- wherein the light emitted by the body forms the received light.
A method of adjusting, calibrating or carrying out a functional check of an optical sensor, including steps of:
- emitting transmitted light at least of a wavelength in the range of 200-450 nm using a sensor, wherein the sensor is designed to measure at least one measured variable in a medium using light;
- exciting a calibration attachment of the optical sensor with the transmitted light, wherein the calibration attachment includes a housing and a body arranged in the housing, wherein the body comprises praseodymium;
- upon excitation, the body emitting light of a longer wavelength;
- and
- adjusting, calibrating or carrying out a functional check of the optical sensor.
Dependencies are inferred from the claim text.