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.
Abstract:
Die Erfindung bezieht sich auf ein Prozess-Analysegerät (10) mit einem Basismodul (14) und einem austauschbaren Kartuschenmodul (12). Das Basismodul (14) weist einen Pumpenantrieb (16, 16') und einen Analyt- Sensor (20) ohne Fluidik-Messstrecke (60) auf. Das Kartuschenmodul (12) weist einen Flüssigkeits-Vorratstank (40,41), eine antriebslose Pumpmimik (36, 36'), die die Flüssigkeit aus dem Vorratstank (40,41) pumpt, und die Fluidik-Messstrecke (60) des Analyt-Sensors (20) auf. Bei in das Basismodul (14) eingesetztem Kartuschenmodul (12) wird die Pumpmimik (36, 36') durch den Antrieb (16, 16') angetrieben und ist die Fluidik-Messstrecke (60) mit dem Analysator (20) verbunden.
Abstract:
An apparatus (20) for placement on or in a body of water (22) for hyperspectral imaging of material (24) in the water comprises an artificial light source and a hyperspectral imager. These are arranged so that in use light exits the apparatus (36) beneath the surface of the water and is reflected by said material (24) before re- entering the apparatus (38) beneath the surface of the water and entering the hyperspectral imager. The hyperspectral imager is adapted to produce hyperspectral image data having at least two spatial dimensions.
Abstract:
A device is developed that is capable of automatically and continuously extracting fluid from a polymer-containing vessel and mixing this with a solvent such that the final fluid is dilute enough that single particle light scattering, spectrophotometric and other measurements can be made on it. Whereas many sampling and dilution devices exist, the novelty of this invention consists in its ability to deal with very high viscosities, including those laden with bubbles, and to introduce only a short delay time between sampling and measurement. The device is ideally suited for situations where the viscosity of the polymer-containing vessel changes over a wide range during the course of a reaction; e.g. polymerization, polymer degradation, aggregation, and others. Furthermore, provision is made for modular conditioning stages, such as changing solvent conditions, evaporating monomer, filtering, etc. The amount of sample actually withdrawn for measurement is very low, normally on the order of 0.25ml to 5ml per hour. The device can also vary the dilution factor either automatically or manually during operation.
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:
The process-analysis device (10) has a base module (14) and a convertible cartridge module (12), where the base module has a pumping drive (16) and an analysis sensor (20) without fluid-measuring section (60). The cartridge module has a fluid-reservoir (40,41). The fluid-measuring section is connected with an analyzer.