Abstract: An improved service cable and cable harness assembly for submersible sensors and pumps which includes a service cable, a well head connector and an end cap attachable to the sensor. The service cable secured at its lower end to the end cap and at its upper end to the well head connector which in turn supports the sensor, the cable and the harness assembly from the well head. The end cap includes a cylindrical bore through which the service cable passes and the bore has an annular groove formed therein. During assembly the end cap is compressed about the service cable by swaging, forcing the service cable jacket to extrude into the groove thereby locking the cable into position in the end cap. In other embodiments of the invention the service cable includes a support cable which is secured within the end cap by a support washer. The support cable is secured at its upper end either by a support washer locked within the well head connector or to a support washer positioned atop the well head.

Abstract: The present invention specifically permits purging and/or sampling of a well but only removing, at most, about 25% of the fluid volume compared to conventional methods and, at a minimum, removing none of the fluid volume from the well.The invention is an isolation assembly with a packer, pump and exhaust, that is inserted into the well. The isolation assembly is designed so that only a volume of fluid between the outside diameter of the isolation assembly and the inside diameter of the well over a fluid column height from the bottom of the well to the top of the active portion (lower annulus) is removed. The packer is positioned above the active portion thereby sealing the well and preventing any mixing or contamination of inlet fluid with fluid above the packer. Ports in the wall of the isolation assembly permit purging and sampling of the lower annulus along the height of the active portion.

Abstract: A device for monitoring the physical characteristics of groundwater or other fluids. The sampling device includes a frame, a hanger for suspending the device from the wellhead, a service cable storage reel mounted for rotation on the frame, a handle for rotating the reel, a lock for preventing rotation of the reel with respect to the frame and a guide for directing the service cable from the reel into the wellhead. The device also may include a service cable which includes discharge hose and an electrical cable which are bonded together to function as a unitary cable and a cable block for sealing the lower end of the electrical cable to prevent the incursion of groundwater.

Abstract: A submersible sensor for use in monitoring the physical properties of well water or other fluids. The sensor includes a thin walled cylindrical body having a pair of opposing entrances, each of which has been machined to form a stepped counterbore. The sensor also includes a seal cone adapted to be inserted in either entrance and a seal disposed between the seal cone and the inner step of the counterbore.