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1. 发明专利

JPH05107185A GAS ANALYZER 失效
公开(公告)号：JPH05107185A
公开(公告)日：1993-04-27
申请号：JP29839591
申请日：1991-10-17
申请人： HORIBA LTD
发明人： YONEDA ARITOSHI , FUJIWARA MASAHIKO , KATO JUNJI
IPC分类号： G01N21/61
摘要： PURPOSE:To obtain a gas analyzer capable of analyzing accurately and highly reliably. CONSTITUTION:A part of output signal VM1 in a measurement detector 3 side is compared in a comparator 15 with a standard voltage v1 corresponding to the full scale of the measuring range. If the output signal VM1 is over the standard voltage v1, a standard voltage v2 corresponding to the voltage over the full scale of the measuring range is output by, for example, sending a signal to an alarm generator 19 to generate alarm and also switching a switch 18 to (a) side.

2. 发明专利

JPH02306140A INFRARED-RAY SPECTROMETER 失效
公开(公告)号：JPH02306140A
公开(公告)日：1990-12-19
申请号：JP12759789
申请日：1989-05-20
申请人： HORIBA LTD
发明人： ASANO ICHIRO , KOJIMA KENNOSUKE , YONEDA ARITOSHI
IPC分类号： G01N21/27 , G01N21/35 , G01N21/3504 , G01N21/3554
摘要： PURPOSE:To perform zero calibration and span calibration simultaneously in a short time without using expensive span gas by a method wherein a zero gas measurement signal at the time of zero gas measurement is stored and operation is done based on this. CONSTITUTION:Infrared rays of proper absorption wavelength to be absorbed by specific component gas in sample gas are incident to a measurement wave length detector 10 while infrared rays without absorption to the specific compo nent gas are incident to a comparison wavelength detector 9. Output signals from the detectors 10, 9 are amplified 16, 15 to be measurement signals VS and comparison signals VR. VS is subtracted 17 from the signal VR and amplified 18 to have difference signals VC (concentration signals) obtained. A subtracter 20 outputs the difference V'c = VC - VC0 of difference signals VCO = GC(VRO -VSO)(where GC refers to the gain of an amplifier 18) between the comparison signals VRO and the measurement signals VSO at the time of zero gas measure ment stored 19 from the signals VC. A signal storage means 21 stores the signal VSO and a divider 22 outputs division output V'C = V'C/VSO. The output V'c is a signal proportional only to infrared-ray absorption by specific component gas.

3. 发明专利

JPH0829346A GAS ANALYSER 失效
公开(公告)号：JPH0829346A
公开(公告)日：1996-02-02
申请号：JP7059395
申请日：1995-03-04
申请人： HORIBA LTD
发明人： AKIYAMA SHIGEYUKI , FUJIWARA MASAHIKO , IKUTA TAKUJI , SHIMIZU NAOHITO , YONEDA ARITOSHI , ONISHI TOSHIKAZU
IPC分类号： G01N21/03 , G01N21/35 , G01N21/3518 , G01N21/37 , G01N21/61
摘要： PURPOSE:To provide a gas analyser simple in constitution and capable of meas uring many components with high accuracy. CONSTITUTION:A plurality of cells 7, 3 including such a case that cell lengths L1, L2 (>L1) are mutually different, communicate with each other through a communication part 21 to constitute a single gas route and a cut-on filter 100 as an infrared transmitting/reflecting means spectrally diffracting an infrared wavelength is provided on the side of a light source l. An NOx measuring cell 3 with a cell length L2 of 60mm, a CO2 measuring cell 7 with a cell length L2 of 1mm, a condenser microphone (NOx infrared detector) 5 and a pyroelectric detector (CO2 infrared detector) 9 allowed to communicate with each other by the communication part 21 are provided on the infrared transmission and reflection sides of the optical filter 100.

4. 发明专利

JPH0545177B2 失效
公开(公告)号：JPH0545177B2
公开(公告)日：1993-07-08
申请号：JP22232686
申请日：1986-09-20
申请人： HORIBA LTD
发明人： ASANO ICHIRO , YONEDA ARITOSHI , IMAKI TAKAO
IPC分类号： G01N21/27 , G01N21/35 , G01N21/61 , H01L21/60 , H05K3/32

5. 发明专利

JPS5994027A OPTOACOUSTIC EFFECT TYPE MEASURING APPARATUS 失效
公开(公告)号：JPS5994027A
公开(公告)日：1984-05-30
申请号：JP20489582
申请日：1982-11-20
申请人： HORIBA LTD
发明人： YONEDA ARITOSHI
IPC分类号： G01J9/00
摘要： PURPOSE:To check deviation in a laser oscillation wavelength without use of a costly spectroscope by checking deviation in the laser oscillation wavelength from the level of an optoacoustic signal of a wavelength detection cell in which a material with a wavelength characteristic and density known in placed provided after or before a measuring cell. CONSTITUTION:Light from a laser light source 1 enters a wavelength detection cell 3 in which a material, for example, propane with the wavelength characteristic and density known passing through a measuring cell 3 with a chopper 2 and a microphone 4 and an optoacoustic signal proportional to the absorption of a laser light due to the propane gas is obtained with a microphone 9. The ratio between this output signal and an output signal of a power meter 6 is compared with a specified reference signal level with an computing section 10. Thus, deviation in the oscillation wavelength of a laser light can be checked without use of a spectroscope.

6. 发明专利

JPH0269638A FLUID ANALYZING METHOD BY DOUBLE FLUID MODULATING SYSTEM 失效
公开(公告)号：JPH0269638A
公开(公告)日：1990-03-08
申请号：JP22073788
申请日：1988-09-03
申请人： HORIBA LTD
发明人： INOUE TETSUSHI , KAWARABAYASHI SHIGEYUKI , YONEDA ARITOSHI
IPC分类号： G01N37/00 , G01N21/17 , G01N21/35
摘要： PURPOSE:To improve the measuring accuracy of such noxious components as exhaust fumes from automobiles, waste gases from factories, etc., contained in the atmosphere by dividing each fume or gas into two flows with a phase difference of 90 deg. in between and performing a synchronous detection rectifying process or smoothing process on each fluid modulated sample simultaneously and continuously made to flow to an analyzing section when the fume or gas is analyzed. CONSTITUTION:Comparison fluids R1 and R2 are prepared from sample fluids S1 and S2 obtained from different fluids or one fluid divided into two systems by setting a phase difference of 90 deg. between the fluids R1 and R2 with a common frequency. Then fluid modulation is performed by alternately passing the sample fluids and comparison fluids. Namely, the fluids S1 and S2 and R1 and R2 are simultaneously and continuously supplied to an analyzing section A provided with one detector D and its preamplifier 2. Then each analysis value is obtained on the fluids S1 and S2 by processing the output signal O (=O1+O2) of the detector D with a signal processing means B constituted of the combination of the 1st and 2nd synchronous detection rectifying means 3a and 3b and the 1st and 2nd smoothing means 4a and 4b.

7. 发明专利

JPS6225985B2 失效
公开(公告)号：JPS6225985B2
公开(公告)日：1987-06-05
申请号：JP19133281
申请日：1981-11-26
申请人： HORIBA LTD
发明人： IWASHITA YOSHIAKI , SUZUKI RIICHIRO , YONEDA ARITOSHI
IPC分类号： G01N21/49 , G01N21/11 , G01N21/15 , G01N21/59

8. 发明专利

JPS5830643A MEASURING METHOD FOR CONCENTRATION OF ACETONE CYANOHYDRIN IN BALLAST WATER 失效
公开(公告)号：JPS5830643A
公开(公告)日：1983-02-23
申请号：JP12926081
申请日：1981-08-17
申请人： HORIBA LTD
发明人： SAITOU OSAMU , AKIYAMA SHIGEYUKI , YONEDA ARITOSHI
IPC分类号： G01N21/77 , G01N21/33
摘要： PURPOSE:To enable to perform a measurement by a non-dispersion optical system, to miniaturize and lighten a device, and to improve maneuverability, by making a pretreatment through addition of alkali to ballast waer to be measured. CONSTITUTION:If alkali such as KOH and the like is added to ballast water to be measured, the alkali reacts with acetone cyanohydrin in ballast to produce acetone. The concentration of the acetone is measured by absorptivmetry through utilization of ultraviolet rays with a wavelength of about 253.7nm to measure concentration of acetone cyanohydrin contained in the ballast water. Additionally, absorbance is measured before alkali is added, and a measurment is made on a background due to a contaminating component to make a correction. This permits the more reliable measurement of concentration of acetone cyanohydrin.

9. 发明专利

JP2001356093A INFRARED GAS ANALYZER 失效
公开(公告)号：JP2001356093A
公开(公告)日：2001-12-26
申请号：JP2001154405
申请日：2001-05-23
申请人： HORIBA LTD
发明人： FUJIWARA MASAHIKO , AKIYAMA SHIGEYUKI , UNO TOSHIHIKO , YONEDA ARITOSHI
IPC分类号： G01N21/03 , G01N21/35 , G01N21/3518 , G01N21/61
摘要： PROBLEM TO BE SOLVED: To provide an infrared gas analyzer capable of judging whether gas to be measured is introduced into one sample cell. SOLUTION: A light source 2 is provided on one side of a cell 1, and a gas filter 22 in which the same gas G as gas to be measured is sealed and a comparing filter 23 in which gas perticipated in measurement and absorbing no infrared rays are parallelly provided on the other side of the cell 1 in a series state with respect to the cell 1, and a light splitting means 23 and a solid-state detector 21 are provided on the rear stage side of the gas filter 22 and, further, a mirror 25 is provided on the rear stage side of the comparing filter 23 so as to be freely accessible with respect to a light path D and, when the mirror 25 is accessible to the light path D, the light transmitted through the comparing filter 23 is guided to the solid-state detector 21 through the mirror 25 and the light splitting means 23.

10. 发明专利

JPH0815161A CHEMILUMINESCENCE ANALYZER 失效
公开(公告)号：JPH0815161A
公开(公告)日：1996-01-19
申请号：JP17003294
申请日：1994-06-28
申请人： HORIBA LTD
发明人： KAGAWA AKIFUMI , YONEDA ARITOSHI , ONISHI TOSHIKAZU
IPC分类号： G01N21/77 , G01N21/03 , G01N21/76 , G01N21/78
摘要： PURPOSE:To obtain a chemiluminescence analyzer which can perform highly accurate measurement while suppressing the effect of wet gas by stabilizing the potential in the vicinity of a photodiode to a constant level. CONSTITUTION:An optical window 8 is provided on one side of a reaction tank 9 fed with a sample gas and a reaction gas and a photodiode 11 detecting chemiluminescence, produced through reaction of both gases, is disposed oppositely to the optical window 8. In such a chemiluminescence analyzer, the optical window 8 is provided with conductivity and the potential thereof is dropped down to the earth potential.

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