Conductivity sensor
A conductivity sensor is provided having an elongated non-conductive body. First and second electrodes extend from the body and are vertically separated from each other. Preferably, the body has a slot therein running partially away from the bottom of the body and being open in a radially outwardly direction. An upper portion of the slot defines a downwardly facing ledge. The first electrode extends through an upper portion of the body and terminates at a lower edge of the body. The second electrode, shorter than the first electrode, extends through an upper portion of the body and terminates at the ledge.
1 . A conductivity sensor comprising:
an elongated non-conductive cylindrical body having a major axis, with an upper portion and a bottom;
first and second elongated electrodes extending parallel to the axis, the first electrode being longer than the second electrode;
ends of the first and second electrodes being separated by different distances from the bottom of the body;
the body having a slot therein running partially upwardly from the bottom of the body and being open in a radially outwardly direction;
an upper portion of the slot defining a downwardly facing ledge;
the first electrode extending through an upper portion of the body and having a lower portion terminating at the bottom of the body, and
the second electrode extending through an upper portion of the body and having a lower portion terminating at the ledge.
2 . The conductivity sensor of claim 1 further comprising:
a first electrically conductive button connected to the first electrode and extending from the bottom of the body; and
a second electrically conductive button connected to the second electrode and extending from the bottom of the ledge.
3 . The conductivity sensor of claim 2 wherein the buttons have a diameter larger than their respective electrodes.
4 . The conductivity sensor of claim 3 wherein the buttons are integrally formed with the electrodes.
5 . The conductivity sensor of claim 1 wherein the first and second electrodes are stainless steel or a titanium alloy.
6 . The conductivity sensor of claim 1 wherein of the body is chlorinated polyvinyl chloride (CVPC) pipe.
7 . The conductivity sensor of claim 1 which further comprises:
a cap threaded to an upper portion of the body, the cap having external threads at its upper portion configured to be connected to an external piping system at a test site.