发明名称 CORPUSCLE COUNTER
摘要 PURPOSE:To reduce the power consumption of laser tube and to prolong its life by switching a laser beam emission device from a continuous operation state to an intermittent operation state automatically and reversibly when the variation rate of a measured value of corpuscle concentration decreases below a constant value. CONSTITUTION:A power source control circuit part C for a laser carries out basically the sequence of a continuous measurement mode wherein the laser beam emission device L is operated continuously. The variation rate of the measured value of the corpuscle concentration fed back from a measurement (arithmetic) circuit part D is detected by a differential arithmetic or sequential subtracting means at all times and when the variation rate is larger than the constant value, the laser beam emission device L is put in continuous operation to perform measurement continuously; when the variation rate decreases below the constant value, the laser beam emission device L is operated intermittently to perform automatic control so that the measurement is performed intermittently.
申请公布号 JPS63290944(A) 申请公布日期 1988.11.28
申请号 JP19870127434 申请日期 1987.05.23
申请人 HORIBA LTD;KURITA WATER IND LTD 发明人 AKIYAMA SHIGEYUKI;SUZUKI RIICHIRO;TAKAMATSU SHUJI;SHIGEMI KOKI;KUMAGAI TOSHIO
分类号 G01N15/06;G01N15/14;G01N21/49 主分类号 G01N15/06
代理机构 代理人
主权项
地址