MEASUREMENT AND CALIBRATION CELL FOR MEASURING ION CONCENTRATION IN LIQUIDS

摘要

A measurement/calibration cell (10) for pot-entiometri-cally measuring ion concentration in a fluid interposes a barrier (38) -between measuring (80) and reference electrodes {82 ) and positions the measuring electrode at a sufficiently higher gravitational potential above the reference electrode that seepage of electrolyte from the latter to the former is effectively precluded. A controller (96) associated with the cell displays instructions and other desired information on a scrolling display (94) such that a substantial mount of information can be presented in a relatively small display window.