US 11,716,973 B2
Apparatus and method for fluid level measurement and control
Andrew Bryan Shuttleworth, Blackburn (GB); and Benjamin Scott Shuttleworth, Blackburn (GB)
Assigned to SEL ENVIRONMENTAL LIMITED, Blackburn (GB)
Appl. No. 17/256,051
Filed by SEL Environmental Limited, Blackburn (GB)
PCT Filed Jun. 28, 2019, PCT No. PCT/EP2019/067362
§ 371(c)(1), (2) Date Dec. 24, 2020,
PCT Pub. No. WO2020/002618, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 18180480 (EP), filed on Jun. 28, 2018.
Prior Publication US 2021/0267179 A1, Sep. 2, 2021
Int. Cl. A01K 63/04 (2006.01); G05D 9/12 (2006.01)
CPC A01K 63/047 (2013.01) [G05D 9/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A liquid measurement and control apparatus for measuring and controlling a level of liquid in an environment including plants or animals, the liquid measurement and control apparatus comprising:
a first chamber including a first liquid port for liquid connection with the environment;
a second chamber integrally formed with the first chamber and including a second liquid port for liquid connection with the environment;
a level sensor for measuring a first level of liquid in the first chamber;
an adjuster for adjusting a second level of liquid in the second chamber, wherein the adjuster is within the first chamber and/or the second chamber; and
wherein, in use, the liquid level within the first chamber is in constant near equilibrium with the level of liquid in the environment so as to provide an accurate indication of the level of liquid in the environment even when the level of liquid within the second chamber is being adjusted.