The load detector includes: first and second beam type load cells which are supported on first and second support bases in a cantilever manner to have free ends; and a mounting part on which an object is to be placed, which includes first and second connection parts connected to the first and second beam type load cells, and which is disposed between the first and second beam type load cells. The free ends of the first and second beam type load cells face opposite directions to each other in an extending direction of the first beam type load cell. The first and second connection parts of the mounting part are respectively connected to the first and second beam type load cells on a side of the free ends of the first and second beam type load cells.

The load detector includes: first and second beam type load cells which are supported on first and second support bases in a cantilever manner to have free ends; and a mounting part on which an object is to be placed, which includes first and second connection parts connected to the first and second beam type load cells, and which is disposed between the first and second beam type load cells. The free ends of the first and second beam type load cells face opposite directions to each other in an extending direction of the first beam type load cell. The first and second connection parts of the mounting part are respectively connected to the first and second beam type load cells on a side of the free ends of the first and second beam type load cells.

A balance (1) has a weighing pan (3) that is held in a predetermined free-floating and constant position relative to translatory and rotary displacements in the six degrees of freedom during use. At least six position sensors are used to measure the position of the weighing pan in all three dimensions. A weighing mechanism having at least six electromagnetic mechanisms (5) generate compensation forces (F.sub.c1-F.sub.c6) that act on the weighing pan by sending currents through a force coil (7) associated with an associated permanent magnet. The weight of an object on the weighing pan is determined from the amounts of current flowing in the respective force coils to maintain the weighing pan in position.

A balance (1) has a weighing pan (3) that is held in a predetermined free-floating and constant position relative to translatory and rotary displacements in the six degrees of freedom during use. At least six position sensors are used to measure the position of the weighing pan in all three dimensions. A weighing mechanism having at least six electromagnetic mechanisms (5) generate compensation forces (F.sub.c1-F.sub.c6) that act on the weighing pan by sending currents through a force coil (7) associated with an associated permanent magnet. The weight of an object on the weighing pan is determined from the amounts of current flowing in the respective force coils to maintain the weighing pan in position.

A load cell may include a bar having a supported end, an unsupported end and a sensor holding portion disposed between the supported end and the unsupported end. The load cell may further include a plurality of electronic sensors including a first strain gauge pair and a second strain gauge pair disposed along the sensor holding portion. The load cell may further include an interface member directly connecting the electronic sensors for weight calculation responsive to application of a load to the unsupported end. In some cases, the interface member may include a flex circuit.

A load cell may include a bar having a supported end, an unsupported end and a sensor holding portion disposed between the supported end and the unsupported end. The load cell may further include a plurality of electronic sensors including a first strain gauge pair and a second strain gauge pair disposed along the sensor holding portion. The load cell may further include an interface member directly connecting the electronic sensors for weight calculation responsive to application of a load to the unsupported end. In some cases, the interface member may include a flex circuit.

Systems and methods related to multiple degree of freedom force sensors are disclosed. One aspect of the disclosure provides a load sensor. The load sensor comprises a first plate and a second plate, a plurality of single-axis load cells including first, second, and third single-axis load cells, wherein each of the first, second, and third single-axis load cells is disposed between the first plate and the second plate and is oriented along a first axis, and a plurality of constraint joints coupled to the first plate and the second plate, the plurality of constraint joints configured to inhibit translation of the first plate relative to the second plate in directions perpendicular to the first axis and configured to inhibit rotation of the first plate relative to the second plate about the first axis.