DEVICE FORMING A MANOMETER INTENDED FOR MEASURING BIPHASE FLUID PRESSURE, ASSOCIATED METHOD OF MANUFACTURE AND FLUIDIC NETWORK

摘要

The invention relates to a device forming a manometer, intended for measuring the pressure of a biphase fluid in a fluidic network, comprising: a first channel (3) inside which a biphase fluid is able to flow, a second channel (1) emerging onto the first channel, the second channel being blind, with each of its dimensions smaller than the capillary length of the liquid phase of the fluid, and with at least one of its longitudinal walls (11) exhibiting a surface energy gradient which decreases from its entry to the bottom, the surface energy gradient making it possible to increase the angle of wetting of the meniscus of the liquid phase of the fluid in the blind channel from its entry to the bottom. Application to the measurement of the pressure of a biphase fluid in a heat exchanger or in a fuel cell.