Simple, inexpensive, robust measuring head for spectrophotometer useful in direct analysis of e.g. milk, has light-conducting assembly connected to carrier for source or sensor

摘要

A measuring head for a spectrophotometer, for direct analysis of products, comprises a light-conducting assembly connected to a carrier for the source or sensor, forming a unit with the source or sensor in between. A novel measuring head is for a spectrophotometer, for direct analysis of products, including: a source of electromagnetic radiation with at least one chosen spectral component in the 300-2500 nm wavelength range; a photosensor, sensitive to at least the 1st, 2nd, 3rd and optionally 4th harmonics associated with the wavelengths used, receiving radiation scattered by the sample for analysis by transmission, reflection and/or volume reflection; a sensor signal processing unit, generating signals representing the spectral composition of the sensed radiation; and a sample space having an inlet and outlet for the sample. The measuring head comprises a light-conducting assembly connected to a carrier for the source or sensor, forming a unit with the source or sensor in between. Independent claims are included for: (i) methods for calibrating the device; and (ii) a method of producing the measuring head.