Online sensor for monitoring chemical contaminations in...

G - Physics – 01 – N

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G01N 21/35 (2006.01)

Patent

CA 2673406

An online sensor (1) for monitoring chemical contaminations in hydraulic fluids, having a receiving device (4) for the fluid to be monitored, the device having observations windows (3) disposed on two opposite sides, is characterized in that the online sensor (1) has an IR emitter (2) and an IR detector (5) comprising at least two, preferably four detector fields for IR spectroscopy, wherein the fields are disposed opposite of each other on both observations windows (3). This provides a sensor that is capable of detecting the maintenance-relevant parameters of hydraulic fluids based on phosphate esters online, which is to say without having to withdraw the same from the airplane's hydraulic system and remove the same as a sample.

Capteur en ligne (1) pour surveiller la présence d'impuretés chimiques dans des fluides hydrauliques, comprenant une unité réceptrice (4) pour le fluide à surveiller, laquelle présente des regards (3) disposés sur deux côtés opposés. Selon l'invention, le capteur en ligne (1) présente un émetteur infrarouge (2) et un détecteur infrarouge (5) avec au moins deux et de préférence quatre champs de détection pour la spectroscopie infrarouge, qui sont disposés en vis-à-vis sur les deux regards (3). On fournit ainsi un capteur qui est capable de déterminer les paramètres importants pour la maintenance de fluides hydrauliques à base d'ester de phosphate en ligne, c'est-à-dire sans soutirer ces fluides du système hydraulique de l'avion et les prélever sous forme d'échantillon.

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