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:
An online detection device underwater elements includes an LIBS system in a sealing pressure chamber and an external airflow control system. The airflow control system has a gas probe bin and a gas source. An opening is formed at one end of the gas probe bin while the other end and the sealing pressure chamber are hermetically partitioned through a glass window. A laser in the LIES system outputs laser to an underwater object surface to be detected for generating plasma spectra. A spectrometer collects plasma spectra returned along an original optical path. When the device operates in water, the balance gas storage tank produces gas with the same pressure as underwater. A flow model is invoked according to the current water pressure to accurately control the air flow rate to form a stable gas environment in the gas probe, which improves the plasma excitation and collection efficiency.
Abstract:
A system for monitoring at least one parameter of a fluid contained in a container includes a measuring device based on near-infrared spectroscopy designed to be submerged in the cited fluid to be monitored and to take measurements of the fluid. The measuring device includes a measuring area. The monitoring system includes a flotation system joined to the measuring device. The flotation system is arranged, during the use of the monitoring system, floating on the fluid to be monitored such that the measuring area of the measuring device is submerged in the fluid at a constant depth with respect to the level of fluid in the container, such that all the measurements taken by the measuring device are taken at the same depth with respect to the level of the fluid.
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:
An apparatus for accurately measuring carbon dioxide partial pressure even if the apparatus is disposed in an environment at a high ambient water pressure, such as in a deep sea environment. A through hole that penetrates a body portion is formed in the body portion. The body portion is connected to a light source unit and a light receiving element unit. A signal line is disposed to pass through the through hole formed in the body portion. The signal line electrically connects between an amplifier substrate of the light receiving element unit and a CPU substrate of the light source unit to transfer the detection result amplified by the amplifier substrate.
Abstract:
An apparatus for placement on or in a body of water for hyperspectral imaging of material in the water comprises an artificial light source and a hyperspectral imager. These are arranged so that in use light exits the apparatus beneath the surface of the water and is reflected by said material before re-entering the apparatus 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.