Abstract:
PROBLEM TO BE SOLVED: To provide a flow cell which can be used in a conventional single path device and has a plurality of paths. SOLUTION: A flow cell 16 includes a chamber 26 for putting in samples. Placed in the chamber 26 is a light transparent tube 28, which causes a first optical path 30 and a second optical path 32 shorter than the first optical path 30 to be formed in the chamber 26. Light from a light source 12 into the first optical path 30 and the second optical path 32 is received by a single path detector 20. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
Vorrichtung zur optischen Detektion von Analyten in einer Probe, mit optoelektronischen Komponenten in Form von mehreren optischen Detektoren zum Empfang von Photonen und mehreren optischen Emittern zum Emittieren von Photonen, bei der mindestens drei Emitter in einer flächigen Anordnung, nicht auf einer Linie, vorgesehen sind, und mindestens drei Detektoren in einer flächigen Anordnung, nicht auf einer Linie, vorgesehen sind, und die Emitter und/oder die Detektoren mindestens drei unterschiedliche Wellenlängencharakteristika aufweisen.
Abstract:
A method of monitoring blockage of a sight tube attached to a wall of a process chamber, the sight tube being operatively associated with a TDLAS optical head with a window between the sight tube and the TDLAS optical head. The method includes the steps of providing a photo sensor in the TDLAS optical head, the photo sensor being positioned to receive light emitted by a light emitting process within the process chamber. An emission signal produced by light emitted by the light emitting process within the process chamber being received by the photo sensor is monitored. A determination is made if the emission signal is degrading.
Abstract:
A system and method for measuring a concentration of a gas in a container having at least one flexible or variable side or wall. The system and method comprising creating a determinable optical path length through the container having a shape. Positioning a light source head and a detector head against at least one of the least one flexible or variable side or wall. Transmitting a light signal between the light source head and the detector head through the determinable optical path length. Determining the concentration of the gas in the container based on detected light and the determinable optical path length.
Abstract:
The present invention is thus directed to an automated system and method of varying the optical path length in a sample that a light from a spectrophotometer must travel through. Such arrangements allow a user to easily vary the optical path length while also providing the user with an easy way to clean and prepare a transmission cell for optical interrogation. Such path length control can be automatically controlled by a programmable control system to quickly collect and stores data from different path lengths as needed for different spectrographic analysis. Such a methodology and system, as presented herein, is able to return best-match spectra with far fewer computational steps and greater speed than if all possible combinations of reference spectra are considered.
Abstract:
The present invention relates to gas sensors able to measure gas based on the absorption bands of radiation characteristic to the gas of interest, where the sensor comprises a gas measurement region. The present invention introduces the gas sensors configured and designed such, that a plural of gas sensors may be connected to form a self contained modular unit such forming a sensor construction able to measure e.g. a number of different gasses or just make a more precise measurement of one particular gas.
Abstract:
The present invention proposes an apparatus and method for measuring the UV absorption rate of a liquid (130) in a container (120) comprising a UV lamp (110), using two sensors (141, 142) to measure intensities of two associated beams of light originating from the UV lamp (110) and passing through the liquid (130), and determining the UV absorption rate based on these two light intensities and at least one transmission distance of the two beams of light. One of the two associated beams of light is a beam of UV light, the other is a beam of UV light or visible light or near IR light.