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The_effect_of_2_3_4_wires_on_Pt100_060210
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RPt 100 = RPt + R2 + R3 RPt
R3
R2
L3
L2
RPt
R1
R2
R3
1 = R2 + RPt + R3
2 = R1 + R2
L3
L2
L1 RPt 100 = RPt + R3 - R1 1 - 2 =
R4
RPt
R1
R2
R3 DVM Constant current source
RPt 100 = RPt
L4 L3
L2 L1
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