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    • 4. 发明专利
    • SAMPLING APPARATUS
    • JPS6093940A
    • 1985-05-25
    • JP20196683
    • 1983-10-28
    • FUJI DENKI SOGO KENKYUSHO KK
    • ZAITSU YASUSHI
    • G01N1/00G01N1/20G01N15/14
    • PURPOSE:To make it possible to continuously collect a specimen in a constant flow amount, by connecting one end of a sampling pipe having a low pressure space at the other end thereof to a main arranged pipe through which a liquid to be measured containing fine particles is flowed and providing a pressure regulating apparatus and a pressure measuring apparatus on the way of said sampling pipe. CONSTITUTION:One end of a sampling pipe 9 having a specimen discharge pipe 8 as a space having definite pressure P2 at the other end thereof is connected to a main arranged pipe 7 through which a liquid 7a to be measured containing fine particles is flowed. Because pressure P1 in the vicinity at the connected part is higher than P2, the liquid 7a to be measured in partially collected by the sampling pipe 9 without using a pump. The specimen 9a is controlled to pressure P3 between P1 and P2 by a pressure control apparatus 10 and a constant flow amount is discriminated by a flow meter 4 to flow the specimen 9a into a measuring apparatus 5. Therefore, because there is no pulsation in the flow of the specimen, fine particles are measured accurately. In addition, even if fine particles are generated from a sampling apparatus 11, the liquid 7a to be measured is not contaminated.
    • 5. 发明专利
    • SAMPLING APPARATUS
    • JPS6085352A
    • 1985-05-14
    • JP19368883
    • 1983-10-17
    • FUJI DENKI SOGO KENKYUSHO KK
    • ZAITSU YASUSHI
    • G01N1/00G01N1/10
    • PURPOSE:To prevent the contamination of pipes by adhering microorganism, which is propagated by the stagnancy of samples and to prevent effect on measured results, by providing a branched pipe in the vicinity of the inlet of an inlet valve of each pipe for a liquid sample containing the microorganism, and preventing the stagnancy of the sample. CONSTITUTION:An inlet valve 8 and branching valves 19 and 20 are opened and inlet valves 9 and 10 and a branching valve 18 are closed. Then the sample of a fluid to be measured 1a is introduced into a measuring device 4 through the inlet valve 8. The samples of fluids to be measured 2a and 3a flow out to branched pipes 13 and 14 through the branching valves 19 and 20 and discharged through a discharge pipe 21. The samples, which are not introduced to the measuring device 4, are always discharged to the discharge pipe 21 by opening the branching valves. The sample always flow through the pipes 5, 6, and 7 from main pipes 1, 2, and 3 to branching points 15, 16, and 17. The propagation of microorganism due to the stagnancy of the samples becomes slight. The contamination of the main pipes by the propagation of the microorganism and the decrease in measuring accuracy of the measuring device do not occur.
    • 7. 发明专利
    • DENSITOMETER
    • JPS60174930A
    • 1985-09-09
    • JP3088584
    • 1984-02-21
    • FUJI DENKI SOGO KENKYUSHO KK
    • ZAITSU YASUSHI
    • G01N21/17G01N21/49
    • PURPOSE:To make it possible to detect the concn. of a high concn. suspended substance, in the optical measurement of the concn. of the suspended substance contained in waste water, by allowing laser beam to be incident to the interface of a measuring liquid and detecting the size of the beam image generated to an interface by reflected and scattered beam of said laser beam. CONSTITUTION:Laser beam 4 of He or Ne is incident to the interface 8 of a liquid 1 containing a suspended substance and a glass plate 7 from a beam source 5, and reflected and scattered by the suspended substance to generate a circular beam image 6 at the interface 8. As the concn. of the suspended substance becomes high, the radius of the beam image 6 becomes small. Hereupon, an optical fiber 9 is arranged in the radius direction of the beam image to detect the size of the radius of the beam image and the concn. of the suspended substance is operated by an operation apparatus 13. Because measuring beam is projected to the interface to detect the beam image, this measuring mechanism is different from a method for measuring the attenuation of beam transmission by the suspended substance and even the high concn. suspended substance can be measured with high accuracy.
    • 8. 发明专利
    • DENSITOMETER
    • JPS60173441A
    • 1985-09-06
    • JP2987184
    • 1984-02-20
    • FUJI DENKI SOGO KENKYUSHO KK
    • ZAITSU YASUSHI
    • G01N21/17G01N21/49
    • PURPOSE:To measure up to high concentration of a suspension projecting beam- shaped measuring light from a gas or solid side upon the boundary surface between a gas or solid body with transparency and liquid containing a suspension, and measuring the size of a light image formed on the boundary surface. CONSTITUTION:When the measuring light 4 is projected on the boundary surface 8 almost at right angles from a light source device through a glass plate 7 which constitutes part of a wall surrounding the liquid 1, the circular light image 6 is formed on the boundary surface 8. The size of the light image 6 is photodetected by a photodetection part 10 consisting of a linear array of numbers of photodiodes at constant intervals through a convave lens 9 having a through hole 9a for the measuring light 4 in the center and converted into an electric signal, which is inputted to a signal processing part 11 to detect the size of the light image 6. An arithmetic unit 13 outputs a signal 13a corresponding to the concentration of the suspension in the liquid 1 on the basis of the detected value. Consequently, high concentration is measured without any blocking cuased by the suspension.
    • 9. 发明专利
    • DENSITOMETER
    • JPS60174929A
    • 1985-09-09
    • JP3088484
    • 1984-02-21
    • FUJI DENKI SOGO KENKYUSHO KK
    • ZAITSU YASUSHI
    • G01N21/17G01N21/49
    • PURPOSE:To make it possible to measure the concn. of a high concn. suspended substance by providing a light source apparatus, a detection apparatus and an operation apparatus at the interface of a liquid containing a suspended substance and gas or a solid having light transmittivity. CONSTITUTION:When light 4 is incident to a liquid 1, a part thereof is absorbed by the liquid 1 and the remainder thereof is reflected and scattered in the liquid 1. As a result, a circular light image 6 around a point 6 is formed to an interface 3 and the size thereof changes corresponding to the concn. of the suspended substance in the liquid 1. A densitometer 13 can measure the concn. of the suspended substance in the liquid 1 on the basis of an output signal 12a and measures the size of the light image 6 and, therefore, can easily perform measurement up to high concn. When the liquid 1 is flowed in the vicinity of a point Q in order to perform the continuous measurement of the concn. of the suspended substance, it is unnecessary to narrow the flowline of the liquid 1 even if the concn. of the suspended substance becomes high and, therefore, said flowline is not clogged by the suspended substance.
    • 10. 发明专利
    • DEVICE FOR DETECTING COLORING OF LIQUID
    • JPH08110297A
    • 1996-04-30
    • JP24499294
    • 1994-10-11
    • FUJI ELECTRIC CO LTD
    • ZAITSU YASUSHIHIRAOKA MUTSUHISANODA NAOHIROTADA HIROSHI
    • G01J3/51G01N21/27
    • PURPOSE: To provide a small-sized and inexpensive coloring detector wherein measurement can be conducted in accordance with the tristimulus values exactly corresponding to relative spectrum sensitivity characteristics following CIE (International illumination Committee) equivalent color function and relative spectrum sensitivity can be changed easily. CONSTITUTION: A light source 1, a measuring cell 2 filled with a sample liquid, a wedge type interference filter 3 for selecting light passing the measuring cell 2 to a plurality of wavelengths, an array type light receiving element 4, a first operation part 6 for calculating the tristimulus values on the basis of signals from each light receiving element forming an array, and a second operation part 7 for performing operation on the basis of the tristimulus values and outputting coloring information of the sample liquid are constituted. Thereby a weight coefficient is multiplied by a plurality of transmission light intensity signals classified by wavelength in the first operation 6, and the tristimulus values exactly corresponding to relative spectrum sensitivity characteristics following CIE equivalent color functions can be obtained. The weight coefficient is modified, and relative spectrum sensitivity of the tristimulus values can be changed simply. In addition, the device is small-sized and inexpensive without need of a large-sized scattering type spectroscope.