Patent ID: 9116143
Filing Date: 2015-08-25
Classification: G01N

Abstract:
1. System for measuring or monitoring the quality of a liquid medium comprising first and second points for taking off a sample from the liquid medium and a hydraulic circuit in which the samples taken from said first and second sample-takeoff points circulate, said hydraulic circuit comprising: a measuring chamber provided with at least one measuring sensor able to measure a quantity characteristic of the liquid medium, said measuring chamber having a first opening in fluid communication with the first sample-takeoff point and a second opening, a first suction pump having a suction inlet connected to the second opening of the measuring chamber and a discharge opening in fluid communication with the liquid medium, the first suction pump being able, in operating configuration, to circulate in the hydraulic circuit, a sample taken from the first sample-takeoff point; a second suction pump having a suction inlet connected to the first opening of the measuring chamber and a discharge outlet in fluid communication with the liquid medium, said second suction pump being able, in the operating configuration, to circulate in the hydraulic circuit a sample taken from the second sample-takeoff point; at least one conduit for connecting the first opening of the measuring chamber to the suction inlet of the second suction pump or connecting the second opening of the measuring chamber to the suction inlet of the first suction pump, said at least one conduit being provided with a purge device in order to discharge the gases present in the hydraulic circuit, and the discharge outlet of the first suction pump is connected to the second sample-takeoff point and the discharge outlet of the second suction pump is connected to the first sample-takeoff point, said first and second suction pumps being, at rest, able to allow the passage of liquid from their discharge outlet to their suction inlet.