Radelkis Elektrokemiai Muszergyarto Szovetkezet

Elektrokemial Muszergyarto Szov.

Lajos Kecskes

Jeno Havas

Henrik Muller

Janos Daroczy

Janos Erdelyi

Erno Pungor

Ferenc Takacs

Elek Doktor

Marton Patko

Katalin Nyiro

The present invention relates to electro-analytical measuring equipment for the determination--by means of one or more measuring cells comprising sensing elements of chemical similar composition, being in constant galvanic contact with each other--of the concentration and ion-activity of solutions or of the partial pressure of gases. The sensing elements are in contact with sample or with one or more standardizing media separated in time or space. At least two reference electrodes are in direct or in indirect contact--through electrolite--with sample and standardizing medium. The reference electrodes join, in a given case, to electronic signal processor comprising arithmetic unit calculating, by fault compensation, value of one or more parameters to be measured.

Electro-analytical measuring equipment with measuring cell, comprising

An electro-analytical measuring process and apparatus for the determination of the concentration and the ion-activity of stationary or flowing solutions or of the partial pressure of gases. The measuring cell of the measuring equipment--connected to an electronic signal processor--comprises, in addition to one or several sensing elements and reference electrodes, at least one fluid clutch capable of galvanically short-circuiting one or more parts of the measuring chain. The measuring cell of the measuring equipment comprises, in a given case, integral sensing unit and standardizing media, being in contact with sensing elements. Further, a control unit for programming short-circuiting belongs to the measuring cell, a fault compensating unit producing signals is connected to the control unit--for calculating the value of the parameter to be measured--is connected to the output of the fault compensating unit.

Fault-compensating electro-analytical measuring process and equipment

A selective fluoride-sensitive electrode featuring a sensor block of spherical surface compensating the effect of thermodilatation and prepared from the fluorides of a lanthanide mixture corresponding to the composition of the natural occurrents or from a mixture composed of the majority of lanthanides.

Selective fluoride-sensitive electrode

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Budapest, Hungary

Lajos Kecskes