{"id":18383,"date":"2025-02-25T08:14:27","date_gmt":"2025-02-25T08:14:27","guid":{"rendered":"https:\/\/kcsensor.com\/?post_type=product&p=18383"},"modified":"2026-02-06T05:48:57","modified_gmt":"2026-02-06T05:48:57","slug":"portable-doppler-flow-meter","status":"publish","type":"product","link":"https:\/\/www.kcsensor.com\/fr\/product\/portable-doppler-flow-meter\/","title":{"rendered":"D\u00e9bitm\u00e8tre Doppler portable KDF1200"},"content":{"rendered":"

1. Introduction<\/strong><\/h3>\n

Le d\u00e9bitm\u00e8tre Doppler portable \u00e0 ultrasons repose sur l'effet Doppler. La sonde \u00e9met un faisceau d'ondes ultrasonores dirig\u00e9 obliquement vers le haut (ou vers l'avant). Les ondes ultrasonores se propagent dans le fluide. Le fluide peut contenir des impuret\u00e9s telles que des bulles ou des particules (on peut consid\u00e9rer que les impuret\u00e9s pr\u00e9sentes dans le fluide ont la m\u00eame vitesse que le courant d'eau). Lorsque les ondes ultrasonores entrent en contact avec les impuret\u00e9s pr\u00e9sentes dans le fluide, les ondes ultrasonores r\u00e9fl\u00e9chies produisent un d\u00e9calage de fr\u00e9quence Doppler \u0394f. Ce d\u00e9calage de fr\u00e9quence Doppler \u0394f est proportionnel \u00e0 la vitesse d'\u00e9coulement. La vitesse d'\u00e9coulement du fluide peut \u00eatre d\u00e9termin\u00e9e en mesurant le d\u00e9calage de fr\u00e9quence Doppler \u0394f.<\/p>\n

Le d\u00e9bitm\u00e8tre Doppler \u00e0 ultrasons portable est un appareil de mesure pratique, d\u00e9velopp\u00e9 \u00e0 partir de l'exp\u00e9rience acquise sur le terrain. Il repose sur les principes de simplicit\u00e9 et de facilit\u00e9 d'utilisation, tant au niveau du montage que des essais ou du traitement des donn\u00e9es, dans le but d'offrir une exp\u00e9rience optimale aux utilisateurs. Le produit int\u00e8gre la formule de calcul de la section transversale correspondante, adapt\u00e9e aux diff\u00e9rents types de canaux que l'on trouve dans la nature. Le d\u00e9bit instantan\u00e9 peut \u00eatre calcul\u00e9 par la m\u00e9thode de la vitesse et de la section, tandis que le d\u00e9bit cumul\u00e9 est calcul\u00e9 en fonction de la dur\u00e9e cumul\u00e9e s\u00e9lectionn\u00e9e par l'utilisateur.<\/p>\n

2. Caract\u00e9ristique\u00a0\u00a0\u00a0<\/strong><\/h3>\n
    \n
  • Aliment\u00e9 par 2 batteries lithium rechargeables 18650 de 3,6 V<\/li>\n
  • Conception \u00e0 faible consommation d'\u00e9nergie, autonomie en utilisation continue pouvant atteindre 8 heures, compatible avec une batterie externe<\/li>\n
  • M\u00e9moire cache locale pouvant contenir jusqu'\u00e0 1 million d'enregistrements, avec une fonction d'exportation des donn\u00e9es historiques<\/li>\n
  • C\u00e2ble de donn\u00e9es USB vers Type-C fourni de s\u00e9rie<\/li>\n
  • Support amovible et extensible<\/li>\n
  • \u00c9cran LCD de 5 pouces avec r\u00e9tro\u00e9clairage<\/li>\n
  • Pile bouton int\u00e9gr\u00e9e, synchronisation automatique de l'horloge RTC<\/li>\n
  • Le syst\u00e8me peut accueillir simultan\u00e9ment deux d\u00e9bitm\u00e8tres Doppler \u00e0 ultrasons afin de r\u00e9aliser des tests comparatifs.<\/li>\n
  • Affichage de l'alimentation : l'interface principale permet d'afficher la puissance de l'alimentation et la tension d'alimentation des capteurs<\/li>\n
  • Plusieurs types de canaux sont disponibles, notamment des canaux circulaires, elliptiques, rectangulaires, trap\u00e9zo\u00efdaux et irr\u00e9guliers.<\/li>\n<\/ul>\n

    3. Dimension<\/strong><\/h3>\n

    \"Dimensions<\/p>","protected":false},"excerpt":{"rendered":"

    D\u00e9bitm\u00e8tre Doppler portable, permettant une mesure rapide, pr\u00e9cise et non invasive du d\u00e9bit de la grande majorit\u00e9 des liquides, tels que l'eau et les eaux us\u00e9es.<\/p>\n

    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