To perform more accurate analysis of a composition of a substance given at a sampling time, provided is an optical analysis apparatus, including: a flow passage, which is connected to a vessel, and is configured to allow a first substance to flow therethrough; an introduction unit, which is provided to the flow passage, and is configured to introduce at least two second substances to the flow passage, to thereby divide the first substance flowing through the flow passage; and a measurement unit, which is provided to the flow passage, and is configured to perform measurement by irradiating the first substance and the second substance flowing through the flow passage with light.

The present disclosure provides optical monitoring devices. In some embodiments, the optical monitoring device includes a heating stirrer, a floating barrel, and a support body arranged to support the floating barrel. The floating barrel includes a barrel body facing the heating stirrer and spaced apart from the heating stirrer by a gap, a cavity provided in the barrel body and configured to accommodate at least one of a vessel and a conduit, an irradiator arranged in the barrel body and configured to radiate light to the cavity, and a light receiver arranged in the barrel body, aligned with the irradiator and the cavity, and configured to receive light from the cavity.

Apparatus, systems, and methods for identifying and quantifying chemical components in a high-melting-point liquid. One such method includes: receiving, into a nebulizer assembly, a high-melting-point liquid from a molten liquid conduit; aerosolizing, using the nebulizer assembly, at least a portion of the received high-melting-point liquid; delivering, into one or more instruments, the aerosolized high-melting-point liquid from the nebulizer; and chemically analyzing, using the one or more instruments, the aerosolized high-melting-point liquid.

Provided is a concentration measuring device which includes: a main pipe through which a fluid whose concentration is to be measured flows; a flow cell having a fluid passage and a light passage formed to pass through the fluid passage; a spectrometer capable of measuring absorbance for each wavelength of the source light transmitted to the flow cell and the received light receiving from the flow cell; and an optical cable connecting the flow cell and the spectrometer with each other, wherein the flow cell is separated from the main pipe to be provided separately, and a fluid pipe is connected to the flow cell, so that the fluid flows from the main pipe to the flow cell through the fluid pipe using a pitot tube.

A particle sensing device and an air conditioner including a sensor has a sensing path through which air passes, a flow path housing which accommodates the sensor and guides air, and a flow path switching device to all air suctioned from the outside is guided to the sensing path, or some of the air suctioned from the outside and moving flows back in an obliquely upward direction and flows into the sensing path.

A gas sensor includes: a gas detection unit including a light source and a detector; and a gas passage including a first end, a second end and a hollow part. The hollow part has a shape in which a cross-sectional area of a flow passage grows smaller. The gas passage includes: a member that divides the hollow part into at least a first area and a second area; a gas inflow port; and a gas outflow port. The gas flows from the gas inflow port into the hollow part, flows in the first area to arrive at the gas detection unit, and the gas located in the gas detection unit flows in the second area and flows out from the gas outflow port.

Technologies are generally described for determination and analysis of an optical profile of a liquid-based material to implement real-time monitoring of a composition of the liquid-based material for quality control. An imaging sub-system may include a plurality of illumination sources configured to illuminate the liquid-based material with light, and one or more detectors. The detectors may be configured to detect light reflected from a first surface of the liquid-based material, light reflected from a second surface of the liquid-based material, and/or light transmitted through the first surface and the second surface of the liquid-based material in response to the illumination. An analytics sub-system coupled to the imaging sub-system may be configured to analyze the detected light to determine an optical profile of the liquid-based material, and monitor the optical profile in real-time to detect changes in the optical profile indicative of corresponding changes to a composition of the liquid-based material.

The present invention relates to a chemical element analysis device and method for contaminants in a liquid. The chemical element analysis device for contaminants in a liquid according to the present invention comprises: a sample storage unit 10 for storing a sampled liquid sample 1; a laser unit 20 for emitting a laser beam 21: 21a, 21b, and 21c and irradiating the laser beam 21 to the sample 1: 1a, 1b, and 1c sprayed from the sample storage unit 10; and a spectrometer 30 for collecting plasma light 31: 31a, 31b, and 31c generated by irradiating the laser beam 21 to the sample 1, and measuring a spectrum of the plasma light 31.

An apparatus and system for measuring and monitoring fouling parameters in a fluid are provided. The apparatus includes a conduit within a housing, wherein at least a portion of the conduit provides a carbon dioxide permeable membrane through which carbon dioxide in the fluid can permeate in use. A carbon dioxide sensor within the housing is configured to measure carbon dioxide levels at the sensor. The housing further includes a light source that irradiates a portion of the conduit and a light sensor that is configured to measure light transmitted through or reflected by the irradiated portion of the conduit to measure the amount of fouling material within the fluid and attached to the irradiated portion of the conduit in use.

A device for measuring a strand that is tubular includes a first radiation source to emit terahertz radiation in a first measurement region from an inside onto an inner surface of the strand. A first radiation receiver receives terahertz radiation reflected by the strand in a second measurement region. A first evaluation apparatus determines at least one geometric parameter of the strand in the first measurement region. A second radiation source emits terahertz radiation in the second measurement region from an outside onto an outer surface of the strand. A second radiation receiver receives terahertz radiation reflected by the strand in the second measurement region. A second evaluation apparatus determines at least one geometric parameter of the strand in the second measurement region. A third evaluation apparatus determines a change in the at least one geometric parameter of the strand between the first and second measurement regions.