Data characterizing a fuel storage facility can be received from one or more of a plurality of sensors disposed in the fuel storage facility. A fuel leak prediction for the fuel storage facility can be determined by a server, based on the received data, and further based on at least one predictive model that predicts whether a fuel leak exists in the fuel storage facility. The fuel leak prediction can be provided by the server. Related apparatus, systems, methods, techniques, and articles are also described.

Embodiments of the present disclosure provide a method and a smart gas Internet of Things (IoT) system for remote control of an ultrasonic metering device. The method is implemented based on a smart gas device management platform of the IoT system and comprises: obtaining metering data of at least one ultrasonic metering device; determining any one of the at least one ultrasonic metering device as a current metering device; determining an accuracy of the current metering device through verifying the current metering device based on metering data of the current metering device and metering data of a related metering device; and sending an adjustment instruction to a target metering device based on the accuracy of at least one current metering device corresponding to the at least one ultrasonic metering device.

Embodiments of a portable verification system can move from one in-field gas flow meter location to another and temporarily connect downstream of a main pipeline's meter run or station. A control valve of the portable verification system allows volume measurement at different flow velocities to be verified. In some embodiments, the portable verification system is connected to the meter run and the main pipeline by an adjustable pipeline section. This section can extend horizontally and vertically, as well as swivel to provide versatility when connecting in the field. Adaptor fittings having one flange sized for and fitted to the inlet and outlet ends of the portable verification system and another flange sized for the meter run or main pipeline connection provide additional versatility. Downtime is limited to the time required to complete a circuit between the meter run, portable verification system, and main pipeline.

A flow meter system comprises a flow meter configured to enable a first flow of a first fluid; and transmitter electronics coupled to the flow meter and configured to calculate a PF of the first fluid, calculate an MF corresponding to the first PF based on a correlation between PFs and MFs, and calculate a first volume of the first fluid using the first MF. A method comprises establishing a correlation between MFs and PFs for a first fluid and a second fluid; storing the correlation in transmitter electronics of a flow meter system; testing the flow meter system using the correlation; and performing measurements using the correlation.

A method for operating a flowmeter for measuring the flow of a flowing medium through a pipe, wherein the flowmeter has a measuring unit for determining individual measured values of the flow and an error unit for determining the measurement uncertainty of the individual measured values. Determination of the individual measured values is carried out using a measuring frequency. A method for operating a flowmeter, which improves the quality of measurement is achieved in that a present measurement uncertainty is determined for each individual measured value by the error unit and by the measurement uncertainties from static and dynamic error sources being linked to one another by error propagation for determining the present measurement uncertainty.

In a method of calibrating a flow rate control device in which a flow rate is calibrated based on comparison with a flow rate measured by a flow rate reference gauge, a predetermined permissible error range is set for a plurality of flow rate settings, and the permissible error range of at least one specific flow rate setting among the plurality of flow rate settings is set to be smaller than the predetermined permissible error range.

A system for detecting theft of electricity from a utility includes a controller configured to receive electricity readings from a metering device configured to sense electricity flowing therethrough to a primary load, disaggregate the electricity readings from the metering device into electricity readings for sub-loads identified within the primary load, and compare the disaggregated electricity readings for the identified sub-loads to expected electricity readings for each identified sub-load. The controller is also configured to calculate a level of interference with an electrical path through the metering device based on an extent that the disaggregated electricity readings deviate from the expected electricity readings and output to the utility the level of interference with the electrical path.

The invention provides generally methods and systems in a bi-directional sphere prover for generating diagnostic information by calculating and using multiple meter factors (MF) from four detector switches. A Data Acquisition and Monitoring System gathers the signals of the four detector switches and calculates the base prover volume (BPV) for each section of the prover based on these readings. Then, the different base prover volumes are used to create multiple meter factors for each section of the prover to derive the diagnostic information. The Data Acquisition and Monitoring System displays, archives, and trends the meter factors. Depending upon what particular meter factor ratios are within the acceptable limit, the correct detector switch can be diagnosed and fixed without a substantial amount of down time for the prover. Trend lines for meter factors can also be analyzed for different process fluids that are sent through the prover.

Embodiments of a portable verification system can move from one in-field gas flow meter location to another and temporarily connect downstream of a main pipeline's meter run or station. A control valve of the portable verification system allows volume measurement at different flow velocities to be verified. In some embodiments, the portable verification system is connected to the meter run and the main pipeline by a corresponding slip or linearly adjustable pipeline section. This section can extend horizontally and vertically, as well as swivel to provide versatility when connecting in the field. Adaptor fittings having one flange sized for and fitted to the inlet and outlet ends of the portable verification system and another flange sized for the meter run or main pipeline connection provide additional versatility. Downtime is limited to the time required to complete a circuit between the meter run, portable verification system, and main pipeline.

A method of limiting a drive signal is provided. The method includes providing a drive signal for a meter assembly, wherein the meter assembly has a resonance frequency. The method also includes interrupting the drive signal after a first drive time-period, wherein the first drive time-period is based on an expected time for the drive signal to reach the resonance frequency.