Issue |
2017
18th International Congress of Metrology
|
|
---|---|---|
Article Number | 14008 | |
Number of page(s) | 4 | |
Section | Dynamics of pressure / Les dynamiques de la pression | |
DOI | https://doi.org/10.1051/metrology/201714008 | |
Published online | 18 September 2017 |
A new type of compact precision amplifier for strain gauge based transducers
Hottinger Baldwin Messtechnik GmbH (HBM), Im Tiefen See 45, 64293 Darmstadt, Germany
If accuracy matters, mechanical quantities such as force, torque or pressure are almost exclusively realized by transducers, which are based on strain gauges. To exploit the potential of static measurements the demands for amplifiers with an increased accuracy steadily grow. Unlike transducers, improvement of precision of amplifiers can go very far. Still these high-precision amplifiers can be realised I a very compact size. The new amplifier introduced features two independent (simultaneously measuring) amplifier channels, each of the channels offering an accuracy class of 0.0025 (25 ppm).
Résumé
“Un nouveau type d’amplificateur de précision compact pour des capteurs à jauge de contrainte”: Si la précision est importante, des grandeurs mécaniques telles que la force, le couple ou la pression sont presque exclusivement réalisées par des capteurs à jauges de contrainte. Pour exploiter le potentiel des mesures statiques, les exigences sur les amplificateurs de haute précision augmentent régulièrement. Contrairement aux capteurs, l’amélioration de la précision des amplificateurs peut aller très loin tandis que leur design est toujours plus compact. Le nouvel amplificateur se distingue par ses deux canaux indépendants (qui mesurent simultanément), chacun offrant une classe de précision de 0,0025 (25 ppm).
Key words: strain gauges / traceability / high-precision amplifiers / accuracy
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.