Abstract: A method, meter and device capable of determining the accuracy, proof, or percent of error of a meter in service. The method is configured to establish one or more baseline flow measurements for the meter, the meter configured to measure a flow through the meter; obtain a current flow measurement for the meter; and determine a proving result in accordance with a comparing of the current flow measurement to the one or more baseline flow measurements.

Abstract: In accordance with embodiments there is proposed an ultrasound sensor device and an ultrasound sensor system configured to perform a method using ultrasound to determine a ratio or concentration of respective gases in a flow of mixed gases. There is provided a method to adapt a distribution system with an ultrasound sensor device and/or an ultrasound sensor system.

Abstract: By implementing a monitoring system to a fluid meter set, the meter set can be monitored for abnormalities including fluid leaks or other system failures as well as gas blend or gas density. A monitoring system that uses sensors such as vibration sensors can detect fluid leaks or other system failures based on abnormal conditions such as vibrations of the meter set. Sensors may be positioned at various locations along the meter set where leakage of fluids or other system failures may be possible. Sensory information detected by sensors are communicated to processing or control unit which can trigger an alarm signaling unit alerting of a potential fluid leak. Such a system of monitoring the integrity of a fluid meter set can help to quickly identify and respond to a fluid leak without necessarily relying on visual or olfactory cues associated with the fluid being leaked.

Abstract: A fluid monitoring system is provided, which includes at least one fluid vibration sensing unit to provide at least one fluid vibration signal from at least one location on a measuring chamber of a meter to be monitored. The system also includes one or more display units, and a control unit configured to be coupled to the at least one fluid vibration sensing unit and the one or more display units. The control unit is configured to detect a condition from the respective location using the at least one fluid vibration sensing unit and communicate to at least one or more display units to provide a display of the condition. A meter with a fluid monitoring system is also provided.

Abstract: By implementing an oil monitoring in a rotary meter, the meter can check the oil level, condition and/or both level and condition and report any issues detected such as out-of-limit low oil condition, contamination, etc. The function can trigger a preventative maintenance on the rotary gas meter with a view to improving its longevity. Oil level monitoring may be signalled using sensors such as switches. Oil colour, clarity, aeration and foaming, corrosion, varnish, wear debris, or other quality monitoring may be signalled using sensors such as spectrometers. A rotary meter may be configured with one or more such sensors for (multi-)parameter monitoring and the one or more sensors positioned in respective locations such as at an oil reservoir.

Abstract: A direction selective unidirectional clutch assembly for a fluid meter counter module assembly is characterized by a drive selector mechanism to couple a direction selection drive shaft to a unidirectional clutch to select one of a first flow direction and a second flow direction of flow of the fluid to drive a counter module. The direction selection draft is coupled to a rotating member (e.g. impeller) driven by flow of the fluid and rotates in a direction that is responsive to the direction of rotation of the rotating member. A pair of gears are mounted to slide along the direction selection draft between a first position and a second position. A direction changing gear is mounted at the second position. Further provided is a flow meter with a direction selective unidirectional clutch assembly.

Abstract: A side view fluid meter counter assembly comprises a mounting bracket to mount a mechanical counter to an end of a fluid meter (e.g. gas meter) and a drive mechanism to drive a counter shaft of the mechanical counter from rotational movement of a rotationally driven member of the fluid meter. The rotationally driven member has a drive shaft extending in an end facing direction to connect to the drive mechanism and the mounting bracket mounts the mechanical counter in an orthogonal direction to the end facing direction such that a face of the mechanical counter is viewable from a side of the meter. The drive mechanism may comprise a worm drive. The drive mechanism may further comprise a pair of bevel gears. The mounting bracket further mounts the drive mechanism. Further provided is a fluid meter having a side view counter.

Abstract: A magnetic sensor assembly for rotary gas meters includes a counter module electronic volume corrector (“EVC”). In one aspect, the assembly includes a magnetic sensor probe configured to be releasably secured within an aperture of a first gas meter body. The sensor probe may alternatively be positioned within an adapter sleeve. The adapter sleeve is configured to be releasably secured within an aperture of a second gas meter body. In another aspect, the counter module EVC includes a base coupling member, and the assembly includes first and second magnetic sensor probes, the probe being configured to be releasably secured within apertures of first and second gas meter bodies, respectively. Each probe has a probe coupling member that is releasably engagable with the base coupling member.

Abstract: A gas meter with a rated maximum flow capacity of greater than 3,000 CFH (Cubic Feet per Hour)—for example, between 3,500 CFH and 7,000 CFH—is provided with 2-inch flange connectors. One or more undercuts are provided in the meter body to promote satisfactory performance in terms of, for example, differential pressures at the meter inlet and outlet.

Abstract: A magnetic sensor assembly for rotary gas meters includes a counter module electronic volume corrector (“EVC”). In one aspect, the assembly includes a magnetic sensor probe configured to be releasably secured within an aperture of a first gas meter body. The sensor probe may alternatively be positioned within an adapter sleeve. The adapter sleeve is configured to be releasably secured within an aperture of a second gas meter body. In another aspect, the counter module EVC includes a base coupling member, and the assembly includes first and second magnetic sensor probes, the probe being configured to be releasably secured within apertures of first and second gas meter bodies, respectively. Each probe has a probe coupling member that is releasably engagable with the base coupling member.

Abstract: A gas meter with a rated maximum flow capacity of greater than 3,000 CFH (Cubic Feet per Hour)—for example, between 3,500 CFH and 7,000 CFH—is provided with 2-inch flange connectors. One or more undercuts are provided in the meter body to promote satisfactory performance in terms of, for example, differential pressures at the meter inlet and outlet.

Abstract: An apparatus for use with a backup counter module, the apparatus having: a housing having a first end for coupling the housing to a gas meter body, and a second end for coupling an electronic counter module to the housing; and the second end having an inner surface with at least two sets of backup counter module engagement features for securing an output end of a backup counter module in one of at least two backup counter module positions. The housing may be coupled to a first gas meter body with a backup counter module positioned within the housing in one of the at least two backup counter module positions. The housing may alternatively be coupled to a second gas meter body with the backup counter module positioned within the housing in another of the at least two backup counter module positions.

Abstract: An apparatus for use with a backup counter module, the apparatus having: a housing having a first end for coupling the housing to a gas meter body, and a second end for coupling an electronic counter module to the housing; and the second end having an inner surface with at least two sets of backup counter module engagement features for securing an output end of a backup counter module in one of at least two backup counter module positions. The housing may be coupled to a first gas meter body with a backup counter module positioned within the housing in one of the at least two backup counter module positions. The housing may alternatively be coupled to a second gas meter body with the backup counter module positioned within the housing in another of the at least two backup counter module positions.

Abstract: A unidirectional clutch assembly for coupling an input shaft to a driven shaft, uses an internal shaft positioned within a moveable clutch disc and a stationary clutch disc. The moveable disc has an engaging element for releasably engaging the internal shaft when the moveable clutch disc is rotated in a primary rotation direction by the driven shaft. The stationary clutch disc has a second engaging element for releasably engaging the internal shaft when the internal shaft is rotated relative to the stationary clutch disc in the opposite direction. When the driven shaft rotates in the primary rotational direction, the moveable clutch disc engages, and the stationary clutch disc disengages, the internal shaft, allowing it to rotate freely in the primary rotational direction. When the driven shaft rotates in the opposite direction, the moveable clutch disc disengages, and the stationary clutch disc engages, the internal shaft preventing its rotation.

Abstract: An assembly for use in a rotary positive displacement fluid meter having an inner body wall surface that includes a first impeller having an outer surface located within the rotary positive displacement fluid meter and adapted to be directly driven by a fluid flow. The assembly also includes a flexible edge member situated at a distal end of the impeller such that there is a clearance between the flexible edge member and the inner body wall of the rotary positive displacement fluid meter. The impeller defines a longitudinal axis and the flexible edge member has a length along the longitudinal axis and a width in a direction that is orthogonal to the longitudinal axis.

Abstract: A unidirectional clutch assembly for coupling an input shaft to a driven shaft, uses an internal shaft positioned within a moveable clutch disc and a stationary clutch disc. The moveable disc has an engaging element for releasably engaging the internal shaft when the moveable clutch disc is rotated in a primary rotation direction by the driven shaft. The stationary clutch disc has a second engaging element for releasably engaging the internal shaft when the internal shaft is rotated relative to the stationary clutch disc in the opposite direction. When the driven shaft rotates in the primary rotational direction, the moveable clutch disc engages, and the stationary clutch disc disengages, the internal shaft, allowing it to rotate freely in the primary rotational direction. When the driven shaft rotates in the opposite direction, the moveable clutch disc disengages, and the stationary clutch disc engages, the internal shaft preventing its rotation.

Abstract: A tracking assembly and method for tracking the operation of a rotary gas meter that has a driven member includes a connecting member, a gear assembly and a mechanical counter. The connecting member is adapted to be coupled to the driven member. The gear assembly is adapted to be coupled between the connecting member and the mechanical counter. The mechanical counter is used to count a value that is directly proportional to the number of rotations of the driven member when the connecting member is coupled to the driven member. The value provided by the mechanical counter is multiplied by a conversion factor such that the associated volume of gas displaced by the gas meter can be determined.

Abstract: A air meter calibration testing device for testing temperature compensators, comprises a vortex cooling tube, a cold air chamber, a hot air chamber, a bleed valve, a motorized drive system and a compressed air regulator. The vortex tube converts compressed air from the regulator into distinct cold and hot waste air streams. The cold stream is provided to the cold air chamber and the hot stream is provided to the hot air chamber. The regulator is used to adjust the pressure of the compressed air supplied to the vortex tube and accordingly to adjust the temperature in the cold air chamber. The bleed valve is coupled to the hot air outlet of the vortex tube and is used to adjust the air flow of the hot air stream into the hot chamber and accordingly the temperature in the hot air chamber. The motorized drive system is adapted to provide volumetric input to the temperature compensator by actuating the drive shaft of the temperature compensator to simulate connection to a air meter.

Abstract: To obtain better accuracy, it is known to modify the mechanical metered volume reading of the flow through a gas pipeline according to the gas laws, which incorporate the pressure and temperature parameters of the gas. The present invention samples those parameters with analog sensors and inputs them into an analog to digital converter. The digital output from the converter is employed to obtain a more accurate digital volume reading.