Teledyne T802 Manuel d'utilisateur Page 222

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 314
  • Table des matières
  • DEPANNAGE
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 221
Principles of Operation Teledyne API T802 Paramagnetic O
2
Analyzer Operation Manual
220
Figure 12-1: Paramagnetic O
2
Sensor Design
When sample gas containing oxygen flows into the magneto-mechanical sensor,
the O
2
molecules are drawn toward the strong point of the magnetic field. This
causes the N
2
filled spheres to deflect even more so that the suspended dumbbell
body pivots on the platinum wire. The more O
2
present the further the dumbbell
body is deflected from its neutral position.
The position of the dumbbell is detected by a pair of photocells that receive a
light beam reflected from a mirror attached to the center of the dumbbell body.
As the dumbbell body pivots, the angle of the reflected light beam on the
photocells changes. The resulting potential difference creates a current.
Light
Source
Photocells
C
o
i
l
Figure 12-2: Paramagnetic O
2
Sensor Block Diagram
07275B DCN6418
Vue de la page 221
1 2 ... 217 218 219 220 221 222 223 224 225 226 227 ... 313 314

Commentaires sur ces manuels

Pas de commentaire