Basic load cell resistance checks
Unfortunately there is no standard wiring colour code for load cells so you will need to know from data
supplied with the cell which wires are the excitation wires and which wires are the signal wires (see section
2.6 for colour code examples). If you do not have this information then as shown in the diagram above in
addition to the 4 resistance elements which make up the Wheatstone bridge there are commonly one or two
resistors in the excitation lines. This means that the resistance across the excitation wires is usually the
highest resistance measured across any two wires. The resistances also vary between manufacturers and
load cell types, input and output resistance values are often provided in the data supplied with the load cell.