G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 1/12 (2006.01)
Patent
CA 2623973
Methods and devices for measuring chemical or biological properties of a liquid from a subsurface position are disclosed, wherein a closed casing is submerged in the liquid to be sampled. The flow of the liquid for the sampling is driven by a hydrostatic pressure and is thus independent of pumps or the like when placed at the correct subsurface position. The flow rate is in a first aspect of the present invention controlled by providing a constant hydrostatic pressure during the sampling period. Alternatively, the inlet is provided with a cartridge comprising a tracer material, which is partly soluble by the liquid and is released proportional to the flow rate.
La présente invention concerne des procédés et dispositifs de mesure des propriétés chimiques ou biologiques d'un liquide à partir d~une position sous la surface, une enveloppe fermée étant immergée dans le liquide à prélever. L'écoulement du liquide pour le prélèvement est dirigé par une pression hydrostatique et est de ce fait indépendant des pompes ou analogues lorsqu~ils sont positionnés de manière correcte sous la surface. Le débit correspond au premier aspect de la présente invention régulé en fournissant une pression hydrostatique constante pendant la période de prélèvement. En variante, l'admission est équipée d~une cartouche comprenant un matériau traceur, qui est partiellement soluble dans le liquide et est libéré proportionnellement au débit.
Marks & Clerk
Sorbisense Aps
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