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    SAMPLING TUBE WASHING DEVICE
    1.
    发明专利
    SAMPLING TUBE WASHING DEVICE 失效

    公开(公告)号：JPH02223860A

    公开(公告)日：1990-09-06

    申请号：JP4398189

    申请日：1989-02-23

    Applicant: TOA ELECTRONICS

    Inventor： MORITA TOSHINAO ,  MURAYAMA JIRO ,  NAKAMURA YOSHIAKI

    IPC: G01N35/10

    Abstract: PURPOSE:To simply and efficiently wash a sampling tube by constituting this device so that a washing block in which the sampling tube is inserted through vertically is provided, and in the washing block, wash water is supplied and a sump solution is discharged. CONSTITUTION:In the figure, a sampling tube 1 descends and inserted into a sample container 17, and samples a sample liquid 18. After sampling is ended, the tube 1 is allowed to ascend by a fixed arm 2, and simultaneously, wash water 13 is supplied into the upper insert-through hole 7 from a supply port 10, while operating a vacuum pump 15. During this time, the liquid 18 adhering to the outside of the tube 1 is sucked from a discharge port 14, and subsequently, the outside of the tube 1 is washed the wash water 13 supplied to the insert- through hole 7. Next, when the lower end of the tube 1 reaches the ascending limit A, a sampling pump 3 operates. In such a way, the wash water 13 is sucked to the tube 1 and flows to a measuring cell 4, and the inside of the tube 1 and the cell 4 are washed. The wash water 13 used for washing is sucked from the discharge port 14.

    PH MEASURING APPARATUS AND METHOD FOR CALIBRATING THE SAME
    3.
    发明专利
    PH MEASURING APPARATUS AND METHOD FOR CALIBRATING THE SAME 失效

    公开(公告)号：JPH05133927A

    公开(公告)日：1993-05-28

    申请号：JP32386191

    申请日：1991-11-11

    Applicant: TOA ELECTRONICS

    Inventor： NAKAMURA YOSHIAKI ,  IBUKI TADAHIRO ,  SATO TETSUYA

    IPC: G01N27/26 ,  G01N27/416

    Abstract: PURPOSE:To simply and correctly calibrate a pH measuring apparatus with a standard solution which has not been stored in an apparatus memory. CONSTITUTION:A keyboard 19 is used to input a pH-temperature characteristic table of desired standard solution into a microprocessor 15 and this is stored in a RAM 18. Then the standard solution is injected into an appropriate vessel such as a beaker, temperature of the standard solution is measured by an appropriate temperature sensing means, the temperature is converted into a digital signal to be supplied to the microprocessor 15, a pH value of the standard solution corresponding to the measured temperature is taken out from the RAM 18 into the microprocessor 15, and the pH value is used to automatically calibrate a pH measuring apparatus to calculate asymmetry potential, slope, etc. Thus standard solution calibration is always performed correctly even if there is change in temperature.

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