Systems, methods, and apparatus for monitoring yield while harvesting. In one embodiment, a mass flow rate sensor measures the mass flow rate of the harvested grain. Load sensors measure the weight of the harvested grain. The measured mass flow rate is correlated with the weight of the harvested grain. Processing circuitry calculates error in the measured mass flow rate using the measured weight. The calculated error is used to correct inaccuracy in the measured mass flow rate.

A method of converting a directly measured mass flow rate to account for buoyancy is provided. The method includes directly measuring a mass flow rate of a material, measuring a density of the material, and using the measured density of the material to convert the directly measured mass flow rate into a mass value including a buoyancy of a fluid.

A calibration system and methods for flow metering technologies integrates a known primary reference standard (e.g., a gravimetric scale), configured to determine a mass of calibration fluid, in parallel with surrogate secondary masters (e.g., Coriolis effect flowmeters) connected via an adjustable flowpath having a closed loop mode, including a meter bank, a pump and a measuring section, and an open loop mode, including a reservoir, the meter bank, the pump, the measuring section and the primary reference standard, which enables calibration duality and redundant meter under test confirmation of calibration factors. The disclosed systems and methods enable life cycle assurance of the primary reference standard and the secondary masters' standard reliability and reproducibility over time and, as a redundant system, enable calibration of multiple flow metering technologies, such as, for example, volumetric, mass, density, viscosity and Reynolds number-reliant technologies, in one homogenous system.

Embodiments of the disclosed inventions relate to a platform configured for evaluating and profiling metering technologies such as water meters using information derived from a plurality of fluid meter test systems deployed in a plurality of environments and in communication with a centralized data storage system. The inventions teach the establishment of an A Posteriori Database (APD) using laboratory data and field data derived from user entries and meter tests using a network of certified fluid meter test benches where the field data is based on evaluations of meters removed from a known metering environment.

A calibration system and methods for flow metering technologies integrates a known primary reference standard (e.g., a gravimetric scale), configured to determine a mass of calibration fluid, in parallel with surrogate secondary masters (e.g., Coriolis effect flowmeters) connected via an adjustable flowpath having a closed loop mode, including a meter bank, a pump and a measuring section, and an open loop mode, including a reservoir, the meter bank, the pump, the measuring section and the primary reference standard, which enables calibration duality and redundant meter under test confirmation of calibration factors. The disclosed systems and methods enable life cycle assurance of the primary reference standard and the secondary masters' standard reliability and reproducibility over time and, as a redundant system, enable calibration of multiple flow metering technologies, such as, for example, volumetric, mass, density, viscosity and Reynolds number-reliant technologies, in one homogenous system.

To provide a calibration device for apparatus filling a gas such as hydrogen gas and capable of precisely measuring quantity of the gas such as hydrogen gas that are filled at high pressure. A calibration device 100 according to the present invention includes a measurement housing 10 accommodating a filling vessel 2 to which a high pressure fuel gas is fed from outside; a scale 3 for measuring a weight of a fuel gas fed to the filling vessel 2; and a main body housing 10 accommodating the measurement housing 1 and the scale 3.

A flowmeter test system that tests a test target flowmeter by flowing fluid through the test target flowmeter and measuring the fluid having flowed through the test target flowmeter by a measurement part different from the test target flowmeter is disclosed. The flowmeter test system includes, a storage part to store the fluid, a distribution flow path to distribute the fluid between the storage part and the test target flowmeter, a measurement part introduction path to be connected to the distribution flow path and introduce the fluid into the measurement part, and a flow path switching part to switch between the distribution flow path and the measurement part introduction path. A pressure loss in a flow path from the flow path switching part to the storage part and a pressure loss in a flow path from the flow path switching part to the measurement part are same.

Systems, methods and apparatus for monitoring yield while harvesting. In one embodiment a mass flow rate sensor measures the mass flow rate of the harvested grain. A weight sensor measures the weight of the harvested grain. The measured mass flow rate is correlated with the weight of the harvested grain. Processing circuitry calculates any error in the measured mass flow rate using the measured weight. The calculated error is used to correct any inaccuracy in the measured mass flow rate.

The present disclosure relates to a household appliance, in particular a household food processor, for preparing food particularly by chopping, blending and/or heating the food in a food preparation container. The household appliance comprises the food preparation container, into which an ingredient for food preparation can be fed by the user. At least one sensor for determining a feeding quantity of an ingredient as the ingredient is being fed into the food preparation container is provided, and a control device of the household appliance is configured such that the feeding quantity is determined based on a sensor signal of the sensor. A food that requires a uniform feed of an ingredient for a predetermined period of time can thus be prepared particularly reliably and reproducibly by a user.

A valve of a first container is opened to remove fluid from the first container into a second container, where the output of the first container is arranged to be above a maximum fluid level of the second container. The valve of the first container is closed based on a fluid sensor indicating that a fluid level in the first container is at a first fluid level. A pump is caused to pump the fluid from the second container to the first container via a flow meter. An indication is received after pumping the fluid which causes the pump to stop pumping the fluid from the second container to the first container based on the indication. An amount of fluid pumped into the first container is determined based on the first fluid level and a second fluid level indicated by the fluid sensor. An indication of total fluid volume measured by the flow meter is compared to the amount of fluid pumped. An indication of accuracy of the flow meter is output based on the comparison.