Process for quantitatively detecting constituents of a pulp/fluid mixture

A process for quantitatively detecting constituents of a pulp/fluid mixture for paper and cardboard production, comprising:

• irradiating the mixture with at least one radiation source, the irradiation occurring in a number of definite, different wavelength ranges;
• and
• measuring the intensity of radiation that has been influenced by the mixture by at least one sensor;
• and
• detecting radiation, which has passed through the mixture, with at least one sensor to quantitatively detect constituents of the pulp/fluid mixture,
• wherein each sensor detects only one of the definite, different wavelength ranges of the radiation at a particular time.

A process for quantitatively detecting constituents of a pulp/fluid mixture with an apparatus that includes at least one radiation source for irradiating the mixture in a plurality of definite, different wavelength ranges, at least one sensor for measuring the intensity of radiation that has been influenced by the mixture, and at least one set of measurement electronics, the process comprising:

• positioning the apparatus in sections of a pulp density regulated headbox of a paper machine;
• irradiating the mixture in the sections with the at least one radiation source in a plurality of definite, different wavelength ranges;
• and
• measuring an intensity of the radiation that has been influenced by the mixture with the at least one sensor to quantitatively detect constituents of the pulp/fluid mixture,
• wherein the at least one sensor detects only one of the definite, different wavelength ranges of the radiation at a particular time.

A process for quantitatively detecting constituents of a pulp/fluid mixture with an apparatus that includes at least one radiation source for irradiating the mixture in a plurality of definite, different wavelength ranges, at least one sensor for measuring the intensity of radiation that has been influenced by the mixture, and at least one set of measurement electronics, the process comprising:

• positioning the apparatus in at least one of inflows and outflows of a vat belonging to at least one of a paper machine and a part of a paper machine;
• irradiating the mixture in the at least one of the inflows and the outflows of the vat with the at least one radiation source in a plurality of definite, different wavelength ranges;
• and
• measuring an intensity of the radiation that has been influenced by the mixture with the at least one sensor to quantitatively detect constituents of the pulp/fluid mixture,
• wherein the at least one sensor detects only one of the definite, different wavelength ranges of the radiation at a particular time.

A process for quantitatively detecting constituents of a pulp/fluid mixture with an apparatus that includes at least one radiation source for irradiating the mixture in a plurality of definite, different wavelength ranges, at least one sensor for measuring the intensity of radiation that has been influenced by the mixture, and at least one set of measurement electronics, the process comprising:

• positioning the apparatus in a region of a wet section of a paper machine;
• irradiating the mixture in the wet sections with the at least one radiation source in a plurality of definite, different wavelength ranges;
• and
• measuring an intensity of the radiation that has been influenced by the mixture with the at least one sensor to quantitatively detect constituents of the pulp/fluid mixture,
• wherein the at least one sensor detects only one of the definite, different wavelength ranges of the radiation at a particular time.

A process for quantitatively detecting constituents of a pulp/fluid mixture with an apparatus that includes at least one radiation source for irradiating the mixture in a plurality of definite, different wavelength ranges, at least one sensor for measuring the intensity of radiation that has been influenced by the mixture, and at least one set of measurement electronics, the process comprising:

• positioning the apparatus for use in white water of a paper machine;
• irradiating the mixture in the white water with the at least one radiation source in a plurality of definite, different wavelength ranges;
• and
• measuring an intensity of the radiation that has been influenced by the mixture with the at least one sensor to quantitatively detect constituents of the pulp/fluid mixture,
• wherein the at least one sensor detects only one of the definite, different wavelength ranges of the radiation at a particular time.