Abstract: An enclosure for an ultrasonic transducer is configured for variable moisture protection. During storage and transport, the enclosure may be kept in a sealed state, which prevents entry of humidity. During operation in a wet environment (e.g., in a water meter attached to a pipe) water leaks into the enclosure very slowly, even when sealed. Accordingly, a tube is opened, allowing water molecules to be exhausted from the enclosure and absorbed by a desiccant within the water meter. In an example, a tube passes from an interior of the enclosure to an exterior of the enclosure. An end cap on the tube prevents humid air from entering the enclosure during storage and transport of the ultrasonic transducer. During operation in a humid environment, removal of the end cap allows air exchange to ventilate the enclosure and allows a desiccant outside the enclosure to absorb humidity exhausted from the enclosure.

Abstract: A plug is adapted for connection to an ultrasonic transducer to protect and guide wiring during storage, transportation, and the manufacturing process. The plug protects and orients wires to allow for automated manufacturing and to provide an improved connection between the transducer and an electronic printed circuit board. The plug may include a first portion having wire guide(s) and a second portion configured for attachment to the transducer. The plug includes at least one wire guide to protect wire(s) that connect the ultrasonic transducer to a printed circuit board. A wire extends through a passage defined in each wire guide on a first portion of the plug. The first portion slides with respect to the second portion to expose portions of first and second wires carried within the first and second channels, respectively. Once exposed, the wires can be soldered to a PCB in an automated manner.

Abstract: An enclosure for an ultrasonic transducer is configured for variable moisture protection. During storage and transport, the enclosure may be kept in a sealed state, which prevents entry of humidity. During operation in a wet environment (e.g., in a water meter attached to a pipe) water leaks into the enclosure very slowly, even when sealed. Accordingly, a tube is opened, allowing water molecules to be exhausted from the enclosure and absorbed by a desiccant within the water meter. In an example, a tube passes from an interior of the enclosure to an exterior of the enclosure. An end cap on the tube prevents humid air from entering the enclosure during storage and transport of the ultrasonic transducer. During operation in a humid environment, removal of the end cap allows air exchange to ventilate the enclosure and allows a desiccant outside the enclosure to absorb humidity exhausted from the enclosure.

Abstract: An enclosure for an ultrasonic transducer is configured for variable moisture protection. During storage and transport, the enclosure may be kept in a sealed state, which prevents entry of humidity. During operation in a wet environment (e.g., in a water meter attached to a pipe) water leaks into the enclosure very slowly, even when sealed. Accordingly, a tube is opened, allowing water molecules to be exhausted from the enclosure and absorbed by a desiccant within the water meter. In an example, a tube passes from an interior of the enclosure to an exterior of the enclosure. An end cap on the tube prevents humid air from entering the enclosure during storage and transport of the ultrasonic transducer. During operation in a humid environment, removal of the end cap allows air exchange to ventilate the enclosure and allows a desiccant outside the enclosure to absorb humidity exhausted from the enclosure.

Abstract: A sensor for measuring the flow rate of a fluid in a flow tube, the sensor comprising sensing means and a sensor body, wherein a portion of the sensing means is located within the sensor body and a first portion of the sensor body is arranged to fasten the sensor body to the flow tube such that the sensor is positioned for sensing the flow rate of the fluid in the flow tube.

Abstract: A plug is adapted for connection to an ultrasonic transducer to protect and guide wiring during storage, transportation, and the manufacturing process. The plug protects and orients wires to allow for automated manufacturing and to provide an improved connection between the transducer and an electronic printed circuit board. The plug may include a first portion having wire guide(s) and a second portion configured for attachment to the transducer. The plug includes at least one wire guide to protect wire(s) that connect the ultrasonic transducer to a printed circuit board. A wire extends through a passage defined in each wire guide on a first portion of the plug. The first portion slides with respect to the second portion to expose portions of first and second wires carried within the first and second channels, respectively. Once exposed, the wires can be soldered to a PCB in an automated manner.

Abstract: An enclosure for an ultrasonic transducer is configured for variable moisture protection. During storage and transport, the enclosure may be kept in a sealed state, which prevents entry of humidity. During operation in a wet environment (e.g., in a water meter attached to a pipe) water leaks into the enclosure very slowly, even when sealed. Accordingly, a tube is opened, allowing water molecules to be exhausted from the enclosure and absorbed by a desiccant within the water meter. In an example, a tube passes from an interior of the enclosure to an exterior of the enclosure. An end cap on the tube prevents humid air from entering the enclosure during storage and transport of the ultrasonic transducer. During operation in a humid environment, removal of the end cap allows air exchange to ventilate the enclosure and allows a desiccant outside the enclosure to absorb humidity exhausted from the enclosure.

Abstract: A sensor for measuring the flow rate of a fluid in a flow tube, the sensor comprising sensing means and a sensor body, wherein a portion of the sensing means is located within the sensor body and a first portion of the sensor body is arranged to fasten the sensor body to the flow tube such that the sensor is positioned for sensing the flow rate of the fluid in the flow tube.

Abstract: A sensor for measuring the flow rate of a fluid in a flow tube, the sensor comprising sensing means and a sensor body, wherein a portion of the sensing means is located within the sensor body and a first portion of the sensor body is arranged to fasten the sensor body to the flow tube such that the sensor is positioned for sensing the flow rate of the fluid in the flow tube.

Abstract: The invention provides a liquid meter comprising a measurement chamber in which a spinner is caused to rotate about an axis and pivots, at least at low liquid flow rates, on a support in alignment with the axis. The pivoting motion takes place via a ball that is free to rotate between two concave surfaces each having a radius of curvature that is greater than the radius of curvature of the ball. One of the concave surfaces is tied to the spinner, whereas the other surface is secured to the support.