Patent ID: 11860146
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  A | IPC A  G

Claim 16:
17. A device comprising:
a first measurement system including:
a first reference electrode having (i) a metal plug extending through a side surface at a first location adjacent a bottom surface of a housing and (ii) and a reference metal comprising titanium nitride (TiN) in liquid communication with the metal plug;
a first plurality of sensing surfaces on an exterior of the side surface of the housing adjacent the bottom surface thereof, the first plurality of sensing surfaces configured to perform a first set of one or more soil nutrient measurements; and
a first moisture sensor on the exterior of the side surface of the housing adjacent the bottom surface thereof;

a second measurement system including:
a second reference electrode having a metal plug extending through the side surface at a second location above the first location of the housing;
a second plurality sensing surfaces on an exterior of the side surface of the housing at the second location, the second plurality of sensing surfaces configured to perform a second set of one or more soil nutrient measurements; and
a second moisture sensor on the exterior of the side surface of the housing at the second location.