Abstract:
Embodiments relate generally to gas detector systems and methods, wherein a gas detector system may comprise one or more emitter configured to emit radiation in a beam path; one or more detector configured to receive at least a portion of the emitted radiation; a ring reflector configured to direct the emitted radiation around the ring reflector toward the one or more detector, wherein the ring reflector comprises at least a portion of a spheroid shape, and wherein the ring reflector is configured to allow one or more gas to flow through at least a portion of the beam path; and a processing circuit coupled to the one or more detectors configured to process an output from the one or more detectors.
Abstract:
The present subject matter relates to methods of high-speed analysis of product samples. Light is directed to a portion of a product under analysis and reflected from or transmitted through the product toward an optical detector. Signals for the detector are compared with reference signals based on a portion of the illuminating light passing through a reference element to determine characteristics of the product under analysis. The products under analysis may be stationary, moved by an inspection point by conveyor or other means, or may be contained within a container, the container including a window portion through which the product illuminating light may pass.
Abstract:
The invention relates to an apparatus for the continuous measurement of SO3 and/or H2SO4 concentrations in gases using a photometer having a light source, a cuvette, a receiver, an optical filter unit having at least one optical filter which is selected such that it lets a measurement wavelength pass through which is selected such that it is absorbed as much as possible by SO3 and/or H2SO4 and is absorbed as little as possible by the other components of the gas and the photometer is calibrated with SO3 and H2SO4 gases of known concentrations and having an evaluation unit which includes a memory unit, in which already measured transverse sensitivities at the measurement wavelengths are stored and the evaluation unit can determine a concentration value for SO3 and/or H2SO4 continuously from the photo signals and the stored transverse sensitivities.
Abstract translation:本发明涉及一种使用光度计连续测量气体中SO 3和/或H 2 SO 4浓度的装置,该光度计具有光源,比色皿,接收器,具有至少一个光学滤光器的滤光器单元, 选择的测量波长使其尽可能地被SO 3和/或H 2 SO 4吸收并被气体的其它组分尽可能少地吸收,并且用已知浓度的SO 3和H 2 SO 4校准光度计 并且具有包括存储单元的评估单元,其中已经测量了测量波长处的横向灵敏度被存储,并且评估单元可以从光信号和存储的横向灵敏度连续地确定SO 3和/或H 2 SO 4的浓度值。
Abstract:
A system and method are described herein for self-referencing a sensor that is used to detect a biomolecular binding event and/or kinetics which occur in a sample solution flowing along side a reference solution in a micron-sized deep flow channel.
Abstract:
In a self-referencing instrument for measuring electromagnetic radiation, a mounting member to which a sample can be coupled moves the sample such that, in a first position, the electromagnetic radiation impinges on the sample, and, in a second position, the electromagnetic radiation does not impinge on the sample. A detection unit receives the electromagnetic radiation from the sample and generates a sample signal when the sample is in the first position, and the detection unit receives the electromagnetic radiation from the source and generates a reference signal when the sample is in the second position. A processor coupled to the detection unit processes the reference signal and the sample signal. This results in a continuous, accurate reference measurement, and permits the instrument to efficiently compensate for error, while offering accurate measurements.
Abstract:
Radiation scattering is one of the main contributors to the uncertainty of near infrared (NIR) measurements. Enhanced absorption-measurement accuracy for NIR sensors is achieved by using a combination of NIR spectroscopy and time-of-flight techniques to select photons that are the result of a given mean free path within a moving sample target. By measuring absorption as a function of path length or by windowing signals that are attributable to excessive scattering of NIR radiation within the sample, this technique affords the calculation of more accurate and more universal calibrations. The NIR sensor employs short or ultra-short laser pulses to create NIR that is directed to the moving sample and emerging radiation is detected over time. Windowing effectively truncates non-contributing measurements.
Abstract:
A system for the qualitative analysis of an agricultural product comprises a scanning cell (1) for the transmittance of a sample of an agricultural product, means for the emission of a quantity of light (6) and means for the detection of a quantity of light (5,50), at least one optical sensor (9,90) and a remote control unit (10) connected to the above mentioned at least one optical sensor (9,90). The system is characterized by the fact that means for the detection of a quantity of light (5) are mounted in a mobile manner on said cell (1) and arranged frontally to said means of emission of a quantity of light (6), in such a way that the distance between said means of emission (6) and said means of detection (5) can be altered.
Abstract:
A standard plane sample which supplies an optical characteristic measuring device with reference data. The standard plane sample including a sample portion that is measured by the optical characteristic measuring device to supply measurement data, and a recording medium that stores identification data for identifying a kind of the sample portion as well as reference data corresponding to the optical characteristic of the sample portion.
Abstract:
A system and method are described herein for self-referencing a sensor that is used to detect a biomolecular binding event and/or kinetics which occur in a sample solution flowing along side a reference solution in a micron-sized deep flow channel.
Abstract:
In a self-referencing instrument for measuring electromagnetic radiation, a mounting member to which a sample can be coupled moves the sample such that, in a first position, the electromagnetic radiation impinges on the sample, and, in a second position, the electromagnetic radiation does not impinge on the sample. A detection unit receives the electromagnetic radiation from the sample and generates a sample signal when the sample is in the first position, and the detection unit receives the electromagnetic radiation from the source and generates a reference signal when the sample is in the second position. A processor coupled to the detection unit processes the reference signal and the sample signal. This results in a continuous, accurate reference measurement, and permits the instrument to efficiently compensate for error, while offering accurate measurements.