Load Cell Cale Length

The reason cutting wires isn't recommended is that the signal fom the wheatstone bridge is measured in millivolts. This signal is amplified in your "summation box". If your tanks operate with any comparative logic, the difference in wire length can result in variances in the voltage drop in the individual cell circuits. This is why if you trim them, always make them the same length.

I used to work in a bakery, which used 3 cells per hopper & regularly cut the wires to length [one cell was less than 6" from the sum box], It didn't affect the results as a full calibration had to be carried out anytime a cell was changed... The toledo displays we used have sophisticated electronics, the analog output from the readout fed the plc controlling the flour system, we spent far more time repairing the mechanical components.

the acceptable deviation was required to be less than 1/2%

That's what I thought. Thank you.

Yea I cut them all the time, but since you are using a load cell summing junction box it shouldn't be a problem. The problem only arises when a load cell summing junction box is not used, and even then if the system is designed correctly it is usually not a problem.

You only have a problem with systems that are using 4 load cells, think about it a a chair with four legs but the fourth leg is shorter than the rest, in this case it can cause some calibration problems and a summing box is necessary. Using 3 load cells is a bit like triangulation it is very to go wrong.

Cheers

Joe

That's also what I thought - two so far agree with my thoughts on this. Thank you.

You can't believe the mess we have generated following others requests to stuff all that cable in a junction box.