US 11,714,433 B2
Pressure compensation chamber
Davide Azzoni, Meyrin (CH); Manuel Diaz, Le Lignon (CH); and Teddy Blampey, Poisy (FR)
Assigned to FAS MEDIC S.A., Palézieux (CH)
Filed by FAS MEDIC S.A., Palézieux (CH)
Filed on Apr. 30, 2020, as Appl. No. 16/863,118.
Claims priority of application No. 19172058 (EP), filed on Apr. 30, 2019.
Prior Publication US 2020/0348703 A1, Nov. 5, 2020
Int. Cl. G05D 7/06 (2006.01); G01F 1/88 (2006.01)
CPC G05D 7/0635 (2013.01) [G01F 1/88 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A fluid sensing apparatus comprising:
a fluid flow channel having an inlet and an outlet;
at least one fluid conduit in fluid communication with the fluid flow channel;
a fluid sensor configured to output a sensor signal, the fluid sensor having a casing and at least one sensor port in fluid communication with the at least one fluid conduit and providing access into the casing;
a pressure compensation chamber in which the casing of the fluid sensor is enclosed, wherein the fluid sensor is mounted on a printed circuit board which forms part of the pressure compensation chamber; and
at least one pressure compensation conduit in fluid communication with the pressure compensation chamber and with the fluid flow channel,
wherein the at least one fluid conduit extends between the at least one sensor port and a location along the fluid flow channel such that fluid flowing along the fluid flow channel at the location of the at least one fluid conduit during use enters the casing of the fluid sensor via the at least one fluid conduit, and
wherein the at least one pressure compensation conduit extends between the pressure compensation chamber and a location along the fluid flow channel such that fluid flowing along the fluid flow channel at the location of the at least one pressure compensation conduit during use enters the pressure compensation chamber via the at least one pressure compensation conduit such that a fluid pressure in the pressure compensation chamber compensates for an internal fluid pressure within the casing.