Abstract: Each connector part is provided with an electrically insulating body member and at least two pole contacts. A shield surrounds each associated electrically insulating body member. A position-fixation device serves to positionally retain the connector parts when intercoupled with one another. To impart to each connector part as smooth as possible and niche-free surface there is provided at the end face thereof one or more contact pieces, depending upon the number of pole contacts or poles contemplated for such connector part. Each contact piece is situated at least approximately in the plane of the end face of the associated connector part. Each such contact piece flushly bears against an associated contact piece of the other connector part when the connector parts are intercoupled with one another, and the contact pieces of one connector part are resiliently pre-biased in their contact-making direction.

Abstract: A measuring probe in which the electrolyte is in the form of a highly viscous gel produced in situ from an ion-permeable polymer and a neutral salt suspension. Homogeneously suspended neutral salt particles in the gel cause the gel to have a turbid appearance which disappears progressively as the suspended neutral salt particles pass into solution, thus indicating at all times the state of aging of the electrolyte. The additional presence of silica gel renders the probe potential resistant to pressures in excess of 10 bars.