发明名称 MULTIELEMENT SIMULTANEOUS EMISSION SPECTROCHEMICAL ANALYSIS APPARATUS USED HIGH TEMPERATURE CARBURETOR
摘要 PURPOSE:To detect a signal at a high S/N ratio, by detecting rising point of time of an aimed output signal having comparatively high level and controlling starting of integration of an another output signal by said detected point of time. CONSTITUTION:A rising detection circuit 16 detecting a rising point of time t0 of an integral output signal In is provided to an output side of an integrator 13n and a detection signal X is outputted because a level of a signal Sn is the highest and its rising characteristics are sharp among output signals Sa-Sn of a photomultiplier made incident the light generated by excitation of each element of a sample. Another switches 12a-12m turned on responding to this signal X, and signals Sa-Sm are integrated after the time t0 by integrators 13a- 13m. Accordingly, noise produced from the time t0 to the time t1 is not integrated. For this reason, only desired signal is integrated by the integrator and the weak signals Sa-Sm are detected at a high S/N ratio.
申请公布号 JPS58109838(A) 申请公布日期 1983.06.30
申请号 JP19810214725 申请日期 1981.12.24
申请人 DAINI SEIKOSHA KK 发明人 TAKAHASHI JIYUNICHI;ITOU TETSUMASA;ISHIJIMA HIROSHI
分类号 G01N21/73;G01J3/36;G01N21/71 主分类号 G01N21/73
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