Paper presents some practical aspects of excitation coil design for electromagnetic flow meter dedicated for open channels. Two types of coil is discussed, saddle type and double deck type. Some minor and major differences are discussed.

Nowadays leak detection is widely used in various fields such as the automotive and the refrigeration industries. In France, the leak tightness of installations charged with refrigerants must be controlled periodically by refrigerant detectors, whose sensitivity thresholds are qualified according to several tests described in the European standard EN 14624. The tests described in the European standard are mainly a comparison between the detector signals and several appropriate calibrated leaks. In order to ensure the traceability of the calibrated leak flow rates, a project involving the Laboratoire National de Métrologie et d'Essais (LNE), the Centre d'Energétique et des Procédés (CEP) and the Agence de l'Environnement et de la Maîtrise de l'Energie (ADEME) was carried out to develop a national standard for calibrating R-134a leaks which are used in the tests. Besides, to ensure the fidelity of the sensitivity threshold measurements, a study has been carried out to identify the potential influence parameters. This document presents the national standard and the conclusions of this study.

The purpose of this research is improving so that the result of blood chemical analysis (BCA) can be assured. It can be useful for clinical diagnosis. It is also included. ISO-GUM was created as guidance for making an analysis result into an assurance performance. In supplement 1 of ISO-GUM (ISO-Guide to the express of uncertainty in measurement) in detail, it recommended using Markov Chain Monte Carlo (MCMC) for "law of propagation of the uncertainty (LPU)". The main features of ISO-GUM changed the mode of expression of an analysis result into uncertainty from error, and processing of data analysis was changed into Exploratory Data Analysis (EDA) from conventional ANalysis Of VAriance (ANOVA). The reason for change is for obtaining an exact result, even if a measurement result is abnormal distribution. MCMC was taken in also in the field of BCA. In the research, it experimented for the quality assurance (QA) of calibration curve use quantitative analysis. An accuracy of calibration curve is importance situation as intermediate accuracy in a whole measurement system. The important factor is a set up reference value and a confidence interval for assurance of an analysis result. Since the satisfy conclusion was obtained, it is reported.

Knowledge of the transfer function of a force transducer is required in order to determine a transient force from the transducer's output signal. We describe a linear least-squares fit method for system identification to estimate the transfer function from sinusoidal force calibration measurements, and we consider the evaluation of uncertainty associated with the obtained estimate. In applying this method to different calibration measurements it is demonstrated that consistent results are obtained for the transfer function.

The most important principles, the basis and operation of heterodyne and homodyne interferometers are discussed. Their benefits and limitations are covered based on a metrological analysis. The resolution of interferometers can be determined by calculating the smallest resolvable distance increment. Also, it is shown here how the Abbe comparator principle can be fulfilled in all three measuring dimensions by using interferometers. Other factors in addition to the Abbe errors are discussed which affect the measurement uncertainty of interferometric length measurements.
The Abbe-error-free design is explained using the example of a nanopositioning and nanomeasuring machine developed at the Institute of Process Measurement and Sensor Technology (Ilmenau University of Technology) and manufactured at the SIOS Meßtechnik GmbH Ilmenau, Germany.