| 摘要 |
FIELD: instrument making. ^ SUBSTANCE: in electrochemical cell with renewed surface of indicator electrode, which includes the housing in which there installed is electric motor kinematically connected to supply and renewal device of surface of indicator electrode, comparison electrode, auxiliary electrode, indicator electrode renewed with circular turn of the knife equipped with current-conducting probe installed on the knife so that it contacts the working part of indicator electrode in front of and below the cutting edge of the knife rigidly fixed on the shaft. Shaft is passed through the hole made in central part of the cylinder from non-current conducting material with hydrophobic properties; at that, parallel to central hole in the cylinder there made are holes of auxiliary electrode, comparison electrode, and on the circle described with circular movement of the knife there is the hole for indicator electrode. At that, upper part of cylinder, which is not submerged into the solution, is attached to the housing in which there mounted are supply devices of indicator electrode and shaft of the knife drive through gasket providing sealing of holes in the cylinder for knife drive shaft, indicator electrode, auxiliary electrode and comparison electrode both during supply and renewal of indicator electrode, and during measurement process. ^ EFFECT: invention provides constant area of renewed surface of indicator electrode and improving measurement accuracy. ^ 2 cl, 4 dwg, 1 tbl |
