Combining different metering physical principles into one metering system offers various advantages. In this paper the advantages of producing a hybrid vortex and cone DP meter system is discussed. In single phase flow applications this hybrid meter produces a mass flow, volume flow, and fluid density predictions. In saturated steam and wet natural gas flow applications this hybrid meter can predict the two-phase flow quality, and total mass flow rate. The cone meter sub-system can also run the generic DP meter pressure field analysis diagnostic system ‘Prognosis‘.

Like any type of measuring instruments used for commercial transactions, fuel dispensers, commonly known as petrol pumps, are submitted to metrological control in order to assure consumer protection and provide society in general and citizens in particular the guarantee of accurate measurements, the verification being directly linked with the volume measurement of the delivered fuel.
In Portugal, the fuel dispenser approved under the MID is subject to metrological control in service taking into account its annual verification by the verification bodies, following the procedures defined by IPQ, according to specific national regulations.
Presently there are 45 000 hoses of the fuel dispensers in Portugal, verified by several verification bodies equally distributed in the national territory.
In order to evaluate the influence factors in volume error determination of fuel dispensers, a study using standard test measures of different type, materials and volume was designed and implemented. The uncertainty of the volume determination according to the GUM methodology was evaluated, considering different atmospheric conditions, volume variation over time, different fuel types and determination of error the in different types of standard test measures.
There was some difference in performance and error determination when using different standard test measures, but in all implemented tests, the maximum permissible error was not exceeded. The results allowed simplifying the internal procedure while maintaining the accuracy of results.

Elements of building envelope, during service life, are subjected to deformations and volume changes due to moisture variations, which can cause anomalies in the building, such as the cracking of facade walls and consequent rain penetration, with increase of their moisture content. In case of heritage buildings with structural concrete elements and infill masonry walls, when, besides moisture variations, other different causes can be hypothetically possible, it can be justifiable to investigate more profoundly the anomalies with the available NDT techniques. This study is related to the application of non-destructive testing (NDT) techniques, with a view to the evaluation of anomalies related to the presence and flow of moisture in masonry walls, notably through Ultrasound, Infrared Thermography (IRT) and Photogrammetry. These NDT techniques are used in the evaluation of masonry specimen with variable moisture content, subjected to compression test, before and after been tested, when cracking will be present.

Motivated by the need to establish a measurement traceability in engine fuel consumption for the industry (automobile, shipping and aviation) as well as in the household fuel metering and bio-fuel production (bio-fuel blending), NMIJ developed a primary standard for low liquid hydrocarbon flow rates that works on three common types of liquid fuels, namely light oil (diesel), kerosene and industrial gasoline (flash point over 40 °C). To achieve a high calibration accuracy below 0.1 % which is needed by the industry, this primary standard adopted the gravimetric method performing static weighing with flying-start-and-finish as the calibration method. To cater to a wide flow range from 0.02 L/h to 100 L/h, the calibration facility operates on two gravimetric systems, one using a compactly designed conical rotating double-wing diverter for 1 L/h to 100 L/h and another using a pair of high-speed switching valves as a diverter for 0.02 L/h to 1 L/h. Features of each gravimetric system and its performance are highlighted in the paper. For validation of the calibration capability of the primary standard, uncertainty analysis as well as intra-comparisons with other facilities at NMIJ are also reported.

Condition monitoring of an abrasive or erosive process is essential to give early warning of potential issues and ensure safe delivery of fluid material via pipeline transportation. As one of the solutions to direct mass flow measurement, Coriolis flowmeters provide highly accurate and repeatable measurements in single phase flow processes. In some multiphase flow processes containing solid particles, Coriolis flowmeters may not perform well or even fail due to erosive wear of the measuring tubes. This paper presents an in-situ technique to monitor the structural conditions of a Coriolis flowmeter by analyzing a stiffness related diagnostic parameter in order to validate measurements or prevent flowmeter failure.
This paper demonstrates the procedure to extract the stiffness related diagnostic parameter from a Coriolis flowmeter, on the basis of a mathematical model of the Coriolis oscillation system. With the aid of additional frequencies applied to the drive signal, the stiffness related diagnostic parameter of the measuring tubes is determined through frequency response analysis. This stiffness diagnostic parameter is linked to the physical stiffness of the measuring tubes by introducing a scaling factor. Furthermore, various vibration models, with different degrees of freedom and damping levels, are used to simulate the stiffness diagnostics in Coriolis flowmeters. The feasibility and repeatability of the proposed method are verified through computer simulation and experimental tests. The results show that the proposed method performs well in determining the stiffness related diagnostic parameter of a Coriolis flowmeter and hence the verification of its structural condition.