Vaisala PTB210 SERIES Manual de instrucciones Pagina 16

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 137
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 15
The structure of the sensing element is demontrated in Fig. 2.4.
There is a thin gold layer, a hygroscopic polymer layer, a electrode system and a
ceramic substrate.
Figure 2.4: Sensing Element
[Physics of the Humidity Technology,
R. Freitag, PowerPoint Presentation, 4/07]
The Polymer is to be poised with the environment and store water, where the thin
goldlayer is water vapour permeable. By this means a storage of the H
2
O-dipol
causes a change of the dielectric within the capacitor which depends on frequency.
So capacity increases by availability of charge carriers which is detected within the
connected electronics for further converting processes.
16
Vista de pagina 15
1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 136 137

Comentarios a estos manuales

Sin comentarios