REFERENCE ELECTRODE FOR DEEP RESEARCH Russian patent published in 2015 - IPC G04F10/00 

FIELD: measurement equipment.

SUBSTANCE: electrode comprises a body (1) in the form of a cylinder attached via a seal (2) to a tail (3). Inside the body (1) via a seal (4) of a mobile contact there is a container (5) made in the form of a sleeve with a flange. In the cavity of the container (5) there is a potential-forming element, which consists of a silver wire (6) and a paste AgCl/KC1 (7) that covers it. The wire (6) with the seal stretches via an axial hole made in the bottom of the container (5). The container (5) is closed with a cover (8), where there is an axial hole (9), into which a filter is installed. A bellows (10) filled with KC1 (11) solution is installed onto the container (5). By its other side the bellows (10) is tightly fixed on the bushing of a salt bridge, which is made dismountable and comprises a wide part - a flange (12) with the axial hole, and a narrow part - a rod (13) with an axial through capillary hole (14), which is screwed via a seal (15) into the axial hole of the flange (12). On the outer generatrix of the flange (12), perpendicularly to its axial line, there are pins installed (16). The entire structure is installed into a sleeve (17), made with an axial hole in the bottom - for a rod (13), by longitudinal slots on its generatrix - for pins (16), and thread on its outer surface. On the bottom of the sleeve (17) there is a spring (18) that supports the end of the flange (12). The slot (21) is installed into the axial hole of the tail (3) via the seal (22). The lead of the wire (6) is soldered to the lead of a tight slot (21) by a conductor (23) in insulation. The cavity of the body (1) formed by the end of the container (5) and the end of the tail (3) is filled with an electroinsulating liquid (24).

EFFECT: increased reliability of electrode operation and improvement of its operational properties.

1 cl, 1 dwg