Load Cell Connections

Hi,

When you need more than one load cell to weigh something (usually because of uneven distribution of weight) you can read each cell with a different measuring device and then calculate or connect them in parallel to just one measuring device and get the average value, the the weight must be the measured value times the number of cells.

Kind regards

thx for ur reply

But my doubt is while connecting parallel how it would give average value

can u explain it with a diagram

thx and regards

I could be wrong, but your request resembles homework one.

Depending on particular load receipt device's design(aka weighing platform) a parallel connection of load cells (2,3,4) is goaled to get the same stable average output signal in mV when excitation circuits wired in parallel. That is wherever the actual load(weight) is applied over platform it's supposed to deliver the same average analog signal measured in mV. Actually it's a quite "economical" approach as you need only one excitation PS source and just one ADC channel for further weighing(feeding) processing.

I'd remain this to you to find out any schematics of. It's believed to be not that hard today.

regards, caramba.

P.S. I thought you was interesting in strain gauge load cells.

each load cell can be considered as a load proportional source. If you put all those tensions on a resistor and measure the difference in voltage between its ends it will be proportional to the summ of the load cells outputs so that you measure the effect of the whole load.