Magnetically-impervious retrofit kit for a metered-commodity consumption meter

A metered-commodity measurement system to measure a flow of a metered-commodity, the system comprising:

• a retrofit enclosure housing configured to mechanically couple to an existing commodity meter;
• an optical source within the retrofit enclosure housing, the optical source to generate an optical beam having an optical path;
• an optical sensor within the retrofit enclosure housing, the optical sensor to receive the optical beam and output an intensity signal indicative of a measure of an intensity of the optical beam;
• a rotational retrofit member mechanically coupled to a rotational metering gear of the existing commodity meter that, the rotational metering gear is responsive to a flow of a metered-commodity, the rotational retrofit member and the rotational metering gear having a shared axis of rotation, the rotational retrofit member having an partial-occlusion blade;
• and
• a processor that receives the intensity signal and generates a system-status signal based upon the received intensity signal;
• wherein the optical path passes adjacent to the rotational retrofit member;
• and
• wherein the intensity of the optical beam is attenuated by the partial-occlusion blade when the rotational retrofit member has an angular orientation within a predetermined angular range.

A metered-commodity measurement system to measure a flow of a metered-commodity, the system comprising:

• an optical source to generate an optical beam having an optical path;
• an optical sensor to receive the optical beam and output an intensity signal indicative of a measure of an intensity of the optical beam;
• a rotational retrofit member mechanically coupled to a rotational metering gear of an existing commodity meter, the rotational metering gear is responsive to a flow of a metered-commodity, the rotational retrofit member and the rotational metering gear having a shared axis of rotation, the rotational retrofit member having an occlusion blade extended radially out from an arc portion of the rotational retrofit member about the axis of rotation;
• a processor that receives the intensity signal and generates a system-status signal based upon the received intensity signal;
• and
• wherein the optical beam is attenuated by the occlusion blade when the rotational retrofit member has an angular orientation within a predetermined angular range.