Livres blancs

Vous trouverez ici des notes techniques sur divers sujets liés à la mesure, au contrôle et aux normes. Bonne visite!

Mesurer les fréquences de résonance et éviter les dommages

Les structures techniques, telles que les bâtiments, les machines ou les installations, peuvent être excitées et mises en vibration résonnante par des phénomènes naturels (vent, vagues, tremblements de terre), la circulation ou le fonctionnement d'un moteur. Ces vibrations affectent les matériaux d'une structure et peuvent causer des dommages. Pour éviter cela, il faut déterminer la fréquence de résonance de la structure, de la machine ou de l'installation. C'est là qu'intervient l'analyseur structurel WAVE imc, qui permet de mesurer les fréquences de résonance et de calculer différents spectres de vibrations.

Analyse de la puissance acoustique avec l'analyseur de spectre WAVE imc

Aujourd'hui, la mesure de la puissance acoustique est un élément central de l'ingénierie mécanique. En effet, le niveau sonore des produits, qui est défini par les normes DIN ISO existantes sur les émissions sonores, devient une caractéristique de plus en plus importante des produits. Ce livre blanc décrit comment ajuster en quelques étapes les fonctions d'évaluation de l'analyseur spectral WAVE imc en utilisant une séquence FAMOS pour l'analyse de la puissance acoustique selon les normes.

Fiber-optictemperaturemeasurement

Sensors with fiber Bragg grating technology (FBG) make testing in high-voltage environments safer and easier. The optical operating method, the measuring point and the instrument are fully decoupled. Due to immunity to electrostatic and electromagnetic interference (EMI/ESD) this produces clean measurement results.

La mesure par télémétrie - solution intégrée

Lorsque des forces et des couples doivent être mesurés sur des composants rotatifs, tels que des arbres de transmission, ainsi que sur des objets d'essai mobiles, ou lorsque les capteurs sont utilisés dans des environnements à haute tension ou dans des endroits inaccessibles,la technologie de mesure par télémétrie permet de remédier aux limites des capteurs câblés classiques.

Mesure de la puissance mécanique sur les systèmes de transmission

CAEMAX Technologie GmbH a développé un nouveau système de capteurs pour la télémétrie. Il mesure de manière synchrone la vitesse et le couple agissant sur l'arbre et calcule la puissance à partir de ceux-ci.

From the sensor to data to added value

For many product designers and developers, the topic of Industry 4.0 has long been part of their reality that they have to deal with in daily life. But what does “data of the cyber-physical systems” really mean and when do they actually provide an added value?

Bancs d'essai de composants

Bancs d'essai pour tester des composants électromécaniques : Des solutions intégrées efficaces avec imc CRONOS et imc STUDIO

Multi-bus logger as IoT gateway in networked mobile applications

Test, measurement and condition monitoring on the Internet: an overview of the various requirements for autonomous data acquisition systems for monitoring machinery and vehicles and available flexible solutions.

Measuring currents with extreme dynamics using auto-ranging technology

Anyone who measures currents that are determined by power management, sleep modes and the transitions between modes of operation is faced with extreme dynamics that take conventional measurement technology to its limits. Auto-ranging offers new possibilities, but also new challenges.

Use of removable storage media

imc measurement systems offer stand-alone operation and can store measurement data directly in the device. Frequently, the removable storage media comes in the form of flash cards. They are considered to be robust and easy to handle. However, some simple precautions must be noted when using this type of storage when conducting measurements.

Estimating parameters of DC motors

DC-motors are used in a wide variety of applications touching our daily lives, where they serve to relieve us of much work. However, the large number of DC-motors used is attended by a large amount of time and resources devoted to inspecting them at the end of their production cycle. This white paper covers these topics.

Sigma-delta convertor for measurement technology

Recently, we have often heard of sigma-delta (ΣΔ) - converters being used in various test and measurement applications. In fact, in many imc Meßsysteme systems and devices (imc CRONOScompact, imc CANSAS, ...) these converters come as standard hardware. How does such a converter function, why is its importance increasing so rapidly and what are the benefits for the engineers and technicians? The purpose of this white paper is to address and provide answers and explanations to these questions.

Using a universal measurement module for condition monitoring

Universal measuring modules provide fast and individual adjustments for various measurement applications. The capability to monitor limits in real time, including the settings for individual measurement amplifiers, triggers and memory options is indispensable. In addition, intelligent measurement connectors also allow mathematical and statistical analysis of measurement data in real time. As a result, in addition to simple data collection (data logger operations), complex monitoring of conditions and analysis functions is possible.

Measuring temperature with Resistance Temperature Detectors (RTD) (e.g., Pt100) and thermocouples

In the area of physical measurement technology, temperature is the most frequently measured variable. Especially in the field of process technology, the temperature measurements are the "metrological backbone". In imc measurement devices, in the area of so-called "Mixed Signal Applications", there is hardly a measuring device available that comes without temperature-measuring capability. In this white paper, temperature measurement techniques will be illustrated of the two most common temperature sensors: the Resistance Temperature Detector (RTD) (Pt100) and the thermocouple.

The incremental encoder – (part 1)

The use of incremental encoders has become indispensable in virtually all areas of industry. Its uses can be found for making simple dis-placement measurements on assembly lines, tool and die factories, robots, etc. This white paper is part 1 of a 2-part series covering the topic of incremental encoders.

The incremental encoder – (part 2)

Incremental encoders are used in virtually all areas of industry when it comes to the measurement of displacement , angles, velocities, RPM, etc. The measurement of derived quantities comes from the measurement of time. In the previous White Paper (part 1), the basic operation principals & fundamental signal evaluation possibilities were covered when it comes to single-track incremental encoders. In part 2 of this series, further evaluation possibilities are discussed.

Determining the uncertainty of measurement results with multiple measurement quantities

To determine the uncertainty in the results of a single-channel measurement, one must consider the contributions from both the sensor’s uncertainty and the uncertainty of the measurement channel. Results from multiple measurement channels face even greater complications. This White Paper explains the theoretical background for, as well as the practical steps taken to handle these multi-channel measurement uncertainties.

Synchronized vs. Sequential sampling methods for measurement systems – effects on the system structure

How does one select the right measurement system structure for a given measurement task? Should channels be sampled simultaneously, in synchronization, or is it sufficient for the channels to be sampled sequentially using an analog multiplexer? Anyone making multi-channel measurements is confronted with this issue. This white paper covers these exact questions.

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