Sample Conveying Device, Sample Analysis System, and Sample Pretreatment System

A sample conveying device that conveys a sample container containing a sample, the device comprising:

• a magnetic material that is disposed in a conveyance path on which the sample container is conveyed;
• a magnetic circuit that includes windings wound around an outer circumference of the magnetic material;
• a driving unit that supplies a current to the winding;
• a current detection unit that detects a current value of a current flowing through the magnetic circuit;
• and
• an arithmetic unit that controls the driving unit, wherein
• when the current flows through the winding, the magnetic circuit generates a magnetic force acting on the sample container to move the sample container on the conveyance path,
• the arithmetic unit controls the driving unit so as to supply the current having a set current value set in advance to cause the sample container to perform a predetermined movement operation on the conveyance path to the winding,
• the arithmetic unit calculates a decrease in the current from the set current value due to an increase in a conductor resistance of the winding when the current flows through the winding, and
• the arithmetic unit causes the sample container to perform the movement operation on the conveyance path by changing the current value of the current according to the calculated decrease.