公开(公告)号：US5392634A

公开(公告)日：1995-02-28

申请号：US112422

申请日：1993-08-24

申请人： Ichiro Asano ,  Kenji Takeda ,  Tsutomu Oie ,  Hideki Koike

发明人： Ichiro Asano ,  Kenji Takeda ,  Tsutomu Oie ,  Hideki Koike

IPC分类号： G01N30/02 ,  G01N30/38 ,  G01N30/40 ,  G01N30/46

CPC分类号： G01N30/40 ,  G01N2030/025 ,  G01N2030/385 ,  G01N2030/407 ,  G01N30/461 ,  G01N30/468

摘要： A hydrocarbon analyzer for rapidly measuring both methane and nonmethane hydrocarbons is provided. The analyzer includes a nonmethane hydrocarbon absorbing first column connected in series with a methane absorbing second column. A sample gas is propelled in a carrier gas through a carrier gas line into the first and second columns via a change-over valve for switching between a branched line severably connected between the carrier gas line and a first flame ionization detector for measuring nonmethane hydrocarbons and a second flame ionization detector connected to the second column for measuring methane. The change-over valve switches from a gas sample introducing position to a backflush position so that the sample gas is introduced into the first nonmethane hydrocarbon absorbing column where the nonmethane hydrocarbons are absorbed and the methane is transferred to the second methane absorbing column prior to backflushing the carrier gas to elute the absorbed hydrocarbons which are directed to the first and second hydrogen flame ionization detectors.

摘要翻译： 提供了用于快速测量甲烷和非甲烷烃的碳氢化合物分析仪。 分析仪包括与甲烷吸收第二塔串联连接的非甲烷烃吸收第一塔。 样品气体在载体气体中通过载气管线经由转换阀被推入第一和第二塔中，该转换阀用于切换连接在载气管线和用于测量非甲烷烃的第一火焰离子化检测器之间的分支管线和 连接到第二塔用于测量甲烷的第二火焰离子化检测器。 转换阀从气体样品引入位置切换到反冲洗位置，使得样品气体被引入到吸收非甲烷烃的第一非甲烷烃吸收塔中，并且甲烷在反冲洗之前转移到第二甲烷吸收塔 所述载气洗涤被引导到第一和第二氢火焰离子化检测器的吸收的烃。

公开(公告)号：US5255072A

公开(公告)日：1993-10-19

申请号：US820146

申请日：1992-01-13

申请人： Hajime Mikasa ,  Ichiro Asano ,  Nobutaka Kihara ,  Shuichi Ishimoto ,  Isao Fujita ,  Norio Kada ,  Takeshi Aoki ,  Takao Imaki ,  Masahiko Fujiwara ,  Naohito Shimizu ,  Junji Kato

发明人： Hajime Mikasa ,  Ichiro Asano ,  Nobutaka Kihara ,  Shuichi Ishimoto ,  Isao Fujita ,  Norio Kada ,  Takeshi Aoki ,  Takao Imaki ,  Masahiko Fujiwara ,  Naohito Shimizu ,  Junji Kato

IPC分类号： G01J1/44 ,  G01N21/31 ,  G01N21/35 ,  G01N21/37 ,  G01N33/00 ,  G01N21/85

CPC分类号： G01N21/3504 ,  G01J2001/4242 ,  G01N2021/1723 ,  G01N2021/1725 ,  G01N2021/3129 ,  G01N2021/3536 ,  G01N21/37 ,  G01N2201/128 ,  Y10T436/117497

摘要： A method and apparatus for analyzing fluid by a multi-fluid modulation mode is characterized by subjecting a plurality of sample fluids (which may be different or a single sample fluid divided into a plurality of systems) to a fluid modulation by reference fluids at various frequencies, respectively. An analytical portion provided with only one sensor is simultaneously and continuously supplied with the respective sample fluids. An output signal from the sensor in the analytical portion is divided into signal components of the respective modulation frequencies for the respective sample fluids to rectify and level, whereby obtaining analyzed values about the respective sample fluids is achieved.

摘要翻译： 用于通过多流体调制模式分析流体的方法和装置的特征在于，将多个样品流体（其可以是不同的或分离成多个系统的单个样品流体）以各种频率的参考流体进行流体调制 ， 分别。 仅提供一个传感器的分析部分同时且连续地供应相应的样品流体。 将来自分析部分中的传感器的输出信号分成各个样品流体的相应调制频率的信号分量以进行整流和平衡，由此获得关于各个样品流体的分析值。

公开(公告)号：US5102806A

公开(公告)日：1992-04-07

申请号：US278046

申请日：1988-11-30

申请人： Hajime Mikasa ,  Ichiro Asano ,  Nobutaka Kihara ,  Shuichi Ishimoto ,  Isao Fujita ,  Norio Kada ,  Takeshi Aoki ,  Takao Imaki ,  Masahiko Fujiwara ,  Naohito Shimizu ,  Junji Kato

发明人： Hajime Mikasa ,  Ichiro Asano ,  Nobutaka Kihara ,  Shuichi Ishimoto ,  Isao Fujita ,  Norio Kada ,  Takeshi Aoki ,  Takao Imaki ,  Masahiko Fujiwara ,  Naohito Shimizu ,  Junji Kato

IPC分类号： G01J1/44 ,  G01N21/31 ,  G01N21/35 ,  G01N21/37 ,  G01N33/00

CPC分类号： G01N33/0062 ,  G01N21/3504 ,  G01J2001/4242 ,  G01N2021/1723 ,  G01N2021/1725 ,  G01N2021/3129 ,  G01N2021/3536 ,  G01N21/37 ,  G01N2201/128 ,  Y10T436/117497 ,  Y10T436/118339 ,  Y10T436/18 ,  Y10T436/204998 ,  Y10T436/214 ,  Y10T436/218

摘要： A method for analyzing fluid by a multi-fluid modulation mode is characterized by subjecting a plurality of sample fluids (which may be different or a single sample fluid divided into a plurality of systems) to a fluid modulation by reference fluids at various frequencies, respectively. An analytical portion provided with only one sensor is simultaneously and continuously supplied with the respective sample fluids. An output signal from the sensor in the analytical portion is divided into signal components of the respective modulation frequencies for the respective sample fluids to rectify and level, whereby obtaining analyzed values about the respective sample fluids is achieved.

摘要翻译： 通过多流体调制模式分析流体的方法的特征在于，将分别被分成多个系统的多个样品流体（其可以是不同的或单个样品流体）分别以各种频率的参考流体进行流体调制 。 仅提供一个传感器的分析部分同时且连续地供应相应的样品流体。 将来自分析部分中的传感器的输出信号分成各个样品流体的相应调制频率的信号分量以进行整流和平衡，由此获得关于各个样品流体的分析值。

公开(公告)号：US5013920A

公开(公告)日：1991-05-07

申请号：US526242

申请日：1990-05-18

申请人： Ichiro Asano ,  Kennosuke Kojima ,  Aritoshi Yoneda

发明人： Ichiro Asano ,  Kennosuke Kojima ,  Aritoshi Yoneda

IPC分类号： G01N21/27 ,  G01N21/35 ,  G01N21/3504 ,  G01N21/3554

CPC分类号： G01N21/274 ,  G01N21/3504

摘要： An improved infrared analyzer is provided wherein an unknown specimen gas can be subjected to a measuring infrared ray and a comparative infrared ray to provide resulting signals. The system can be initially calibrated when a zero gas state is initially achieved in the sample cell, and correction factors are achieved by holding the zero gas instrument signal and an output difference between a zero gas comparison signal and the measuring signal for subsequent processing of the actual measurement of the specimen gas to provide a calibrated output signal representative of the concentration of the unknown gas.

公开(公告)号：US4939395A

公开(公告)日：1990-07-03

申请号：US268585

申请日：1988-11-08

申请人： Ichiro Asano ,  Nobutaka Kihara ,  Satoshi Inoue

发明人： Ichiro Asano ,  Nobutaka Kihara ,  Satoshi Inoue

IPC分类号： G01D3/036 ,  G01R19/32

CPC分类号： G01R19/32 ,  G01D3/0365

摘要： A temperature compensating circuit designed in two parts, a temperature-pulse width conversion circuit (X) and a temperature compensating circuit (Y.sub.N) permit the sharing of the temperature-pulse width conversion circuit by a plurality of temperature compensating circuits. Each temperature conversion circuit is relatively uncomplicated in construction, utilizing only resistors and a switch means. The temperature-pulse width conversion circuit utilizes a temperature sensitive element, like a thermistor, in a circuit with an operational amplifier. The output of the operational amplifier is supplied to a pulse width converter for generating the pulse width signal that carries the temperature compensation factor to be used in temperatures compensating the signal received by the temperature compensating circuit.