Abstract: The present invention relates to an apparatus for determining a concentration of a substance in a liquid medium of a test sample. The apparatus comprises a light source for directing a light beam of a first wavelength range towards the test sample, and a first detector for measuring intensity of irradiation emitted from the liquid medium at a second wavelength characteristic for the liquid medium. The apparatus further comprising a second detector for measuring intensity of irradiation emitted from the substance at a third wavelength characteristic for the substance, and a determining unit for determining the concentration of the substance in the liquid medium based on the measured intensities of the irradiation collected at the second wavelength and at the third wavelength.

Abstract: Disclosed is an apparatus for determining a concentration of a substance in a liquid medium of a test sample. The apparatus comprises a light source for directing a light beam of a first wavelength range towards the test sample, and a first detector for measuring intensity of irradiation emitted from the liquid medium at a second wavelength characteristic for the liquid medium . The apparatus further comprising a second detector for measuring intensity of irradiation emitted from the substance at a third wavelength characteristic for the substance, and a determining unit for determining the concentration of the substance in the liquid medium based on the measured intensities of the irradiation collected at the second wavelength and at the third wavelength.

Abstract: Disclosed is an apparatus for determining solids content of a liquid medium of a test sample. The apparatus comprises one or more light source for directing a light beam of a first wavelength range towards the test sample and one or more detector for collecting irradiation emitted from the liquid medium of the test sample as a result of the light beam directed towards the test sample, the irradiation being collected at one or more second wavelengths that are characteristic for the liquid medium. The detector is further arranged for measuring an intensity of the irradiation collected at the one or more second wavelengths. The apparatus further comprises a determining unit for determining the solids content of the liquid medium based on the measured intensity of the irradiation collected at the one or more second wavelengths.

Abstract: In a measurement instrument for measuring pollutants in a liquid, such as oil in water, the measurement instrument includes a main unit disposed in a first housing and a sensor unit disposed in a second housing. The housing, manufactured from an electrically insulating material, and an associated electric connection, are sealed against the passage of gas and liquid. The sensor unit has connections which are connected to a conduit system in which flows the liquid which is to be inspection measured. Sensors are further disposed in the sensor unit for emitting a measurement signal. The sensor unit and its electronics lack galvanic connection with electrically conductive components in the main unit, transfer of measurement signals between both of the units taking place by optical energy transfer, capacitative or inductive transfer.

Abstract: In a measurement instrument for measuring pollutants in a liquid, such as oil in water, the measurement instrument includes a main unit disposed in a first housing and a sensor unit disposed in a second housing. The housing, manufactured from an electrically insulating material, and an associated electric connection, are sealed against the passage of gas and liquid. The sensor unit has connections which are connected to a conduit system in which flows the liquid which is to be inspection measured. Sensors are further disposed in the sensor unit for emitting a measurement signal. The sensor unit and its electronics lack galvanic connection with electrically conductive components in the main unit, transfer of measurement signals between both of the units taking place by optical energy transfer, capacitative or inductive transfer.