Patent ID: 8516901

Claim:
A retrofit flow measurement assembly for a housing of a Woltman meter, the retrofit flow measurement assembly comprising: a housing cover for the housing, the housing cover comprising an ultrasonic transducer; and a measurement insert configured to be insertable into the housing via an opening of the housing, the opening being open perpendicularly to direction of fluid flow from a first connection of the housing to a second connection of the housing, the first connection and the second connection are for connecting to a network of pipes, wherein the measurement insert comprises a fastening plate configured to fit the opening, the fastening plate connected to an insert part, wherein the insert part comprises a first deflector disposed to be below the ultrasonic transducer, and a second deflector disposed in a downstream direction of the fluid flow from the first deflector, wherein the first deflector is configured to deflect an ultrasonic signal transmitted from the ultrasonic transducer towards the second deflector, the second deflector is configured to deflect the ultrasonic signal deflected from the first deflector, such that a path of the ultrasonic signal transmitted from the ultrasonic transducer, deflected by the first deflector, and deflected by the second deflector has a U-shape, and wherein the fastening plate includes a passage hole for the ultrasonic signal to travel therethrough.