Apparatus for affixing a rotation sensor to a rod lift system

An apparatus for affixing a polished rod rotation monitoring device to a rod lift system of a well, comprising:

• an enclosure constructed of metal, or plastic, or rubber, or a combination of these materials;
• and
• at least one attachment mechanism extending from the enclosure and configured to attach the enclosure to a member of the rod lift system, wherein the member is either round or irregular shaped;
• wherein the enclosure is configured to enclose either a circuit board or a magnet;
• wherein the enclosure creates an angled cradle configured to receive the member, the enclosure further comprising an undercut through which the attachment mechanism passes;
• wherein the undercut incorporates one or more retention mechanisms to position the attachment mechanism away from a near side of the member such that the attachment mechanism draws the enclosure against the member;
• wherein a vertical height of the enclosure is less than 4 inches;
• and
• wherein a horizontal extent of the enclosure does not extend more than 4 inches as measured from an axial center of the member.