Abstract:
The invention relates to a sensor head for an underwater vehicle comprising a sample chamber, a light source associated with the sample chamber, and a spectrometer associated with said sample chamber, as well as an associated optical system, such that a spectrum, particularly a Raman spectrum and/or IR spectrum of a sample, can be determined in the sample chamber, said sample chamber having a supply device which comprises a sample-collection element and a sample feed.
Abstract:
Probe (100) for measurement of physical, chemical or biological parameters, characterized in that comprising: - a central body made of anticorodal aluminium tube (102) where water flows inside; in the internal part of the tube (102) a measurement cell (106) is fixed, where sensors are placed in direct touch with water and, on external part of the tube, batteries and electronics (107) are placed; - said central body (102) and said external part with batteries and electronics (107), are covered by a larger anticorodal aluminium tube (105), closed by two flanges, that constitutes the case where batteries and electronics (107) are placed; - said measurement cell (106) has characteristics of modularity, and includes a series of housings, wherein respective sensors are placed for measurement of physical, chemical or biological parameters; said sensors are directly connected to said batteries and controlled by said electronics (107). In case said probe is used for study of the undersea environment, it consists of an expendable probe, launchable from a ship of opportunity, and said measurement cell includes, among said sensors, further devices providing measurement of fluorescence, particularly suitable to reveal real time concentrations of phytoplankton.
Abstract:
The invention relates to recording of position-specific optical measurements of substances such as foodstuff, building materials, combustion products etc. The invention provides online, in-situ recording of wavelength absorption spectra in substances, performed without removing a sample from the substance. In inhomogeneous products, the position correlated to each spectrum allows for extraction of both average values for larger regions as well as specific values characteristic for smaller individual portions. In a preferred embodiment, a probe with two elongate arms has light guiding and light collecting means for recording infrared absorption spectra of portions between them, as well as means for determining an insertion distance into the product. The invention may be applied to as different substances as diary products (cheese, cream, milk), fruit, berries, seeds, meat, vegetable and animal fat, animal feed, water, wine, beer, lemonades, oils, rubber and plastic materials, gypsum and plaster, cement and concrete mixes, paints, glues etc.
Abstract:
A system (300) for monitoring at least one parameter of a fluid contained in a container (30), which comprises: a measuring device (10) based on near-infrared spectroscopy designed to be submerged in the cited fluid to be monitored and to take measurements of said fluid, wherein said measuring device (10) comprises a measuring area (13, M, M'). The monitoring system (300) comprises a flotation system (32) joined to said measuring device (10), said flotation system (32) being arranged, during the use of the monitoring system (300), floating on the fluid to be monitored such that the measuring area (13, M, M') of the measuring device (10) is submerged in the fluid at a constant depth (D, D') with respect to the level of fluid (N) in the container (30), such that all the measurements taken by the measuring device (10) are taken at the same depth with respect to the level of the fluid (N).
Abstract:
A submersible fluorometer (10), includes: an excitation module (40) for exciting the fluorophore; and a detection module (42) for detecting the light emitted by the excited fluorophore, wherein the excitation module (40) includes a first light source (44) including a first UV LED and having a first wavelength lower than 300 nm, the excitation module (40) includes a second light source (46) including a second UV LED and having a second wavelength lower than 300 nm, the first and second wavelengths being different from each other, and the fluorometer includes an electronic circuit having a plurality of printed circuits positioned one below the other.
Abstract:
A sensing apparatus and corresponding method for monitoring carbon dioxide dissolved in a liquid solution employs a crystal (20) surrounded in part by a sample chamber (14) such that, in use, the liquid solution (22) is in direct contact with the crystal.
Abstract:
Die Erfindung bezieht sich auf einen Flüssigkeitsanalysegerät (10) zur fotometrischen Bestimmung eines Analyts in einer Flüssigkeit. Das Flüssigkeitsanalysegerät weist ein stationäres Basismodul (12) auf, das ein Fotometer (50) ohne Messstrecke (68) und keine flüssigkeitsführenden Leitungen aufweist. Erste Flüssigkeitsanalysegerät (10) weist ferner ein austauschbares Fluidikmodul (14) auf, das alle flüssigkeitsführenden Leitungen mit einem die Messstrecke (68) bildenden Messkanal (32) und eine Entgasungsvorrichtung (70) zum Entgasen der Flüssigkeit aufweist. Die Entgasungsvorrichtung (70) weist einen den Messkanal (32) radial umschließenden Frittenkörper (90) auf, der an eine Unterdruckquelle (76) angeschlossen ist.
Abstract:
The invention relates to an optical probe comprising an optical fibre (51) associated with a conical tip (7), made of sapphire or diamond, with a circular base (71) and having, between the base and the end, an annular groove (73) with a curved bottom (731) or at least one axisymmetric shoulder. The invention also relates to a method and a system for determining characteristic quantities of a two-phase flow using such a probe.
Abstract:
A method of identifying an underwater material in an underwater scene comprises analysing a specimen of a material extracted from a body of water using a hyperspectral imager (58) to determine a hyperspectral profile of the material. The hyperspectral profile is stored. An image is taken of an underwater scene in a body of water (22) using the hyperspectral imager (58) or a further hyperspectral imager. An observed hyperspectral profile is generated from the scene. The observed hyperspectral profile is compared with the stored hyperspectral profile to identify the material in the underwater scene. A positive identification is recorded when the comparison is sufficiently close.