公开(公告)号：JPS6488147A

公开(公告)日：1989-04-03

申请号：JP13662588

申请日：1988-06-01

Applicant: ABBOTT LAB

Inventor： JIYON JII PANFURII ,  POORU II GIYARETSUTO ,  CHIYAARUZU ERU DEIBISU ,  ROORENSU SUPIRITSUTSUA ,  BENTON EI DAARII SAADO ,  EDOWAADO JII PANFURII ,  FUREDERITSUKU ERU KURAAKU

IPC: G01N27/28 ,  G01D5/14 ,  G01N27/27 ,  G01N27/403 ,  G01N27/416 ,  G01N33/487

Abstract: PURPOSE: To measure the concentration of an electrolyte by providing a detection means for generating an electrical signal by contacting a sample in a liquid, a means for converting the signal to a second signal corresponding to a generated signal, and an optical means for responding to the second signal. CONSTITUTION: Detection parts 12a-12c and conductive pins 14a-14d are provided at a substrate 11 of an ion selection electrode device 10 and a voltage corresponding to the concentration of an electrolyte is generated by contacting a liquid sample. The pin 14a drives an analog switch means 76 via a buffer 72 and gives the offset voltage of an electrode by an adjusting means 74. An operational amplifier consisting of the buffer 72 and an integrating means 82 amplifies the voltage, a pulse is generated via a pulse generation circuit 84, and an optical means 70 emits light by a driving means 85. The order for selecting pins is changed by the switch 76 using a sample rate counting means 78 and an LED 116 is driven via a synchronization circuit 105 to create an optical synchronization signal. With this configuration, a specific electrolyte concentration can be measured.