vne147
Member
hi vne,
Look thru these two pdf's about load cell usage.
I had already stumbled across the load cell primer document whilst surfing the interwebs. I suspect that's where I originally read the statement about never cutting a 4-wire load cell cable. The other document was new to me. I'm not sure if I'm interpreting it correctly but can I cut the cable for my 4-wire load cell and then convert it into a 6-wire one by splicing a -Sense line into the +Excitation and +Sense into the -Excitation?
I already did some preliminary digging on interface circuits for 6-wire load cells and that info seems to be less readily available compared to 4-wire interface circuits. I did find 2 ICs with 6-wire interface examples but they look pretty complicated. They were the ADS1232 and AD7192.
If I went that route, I'd likely spend a lot of time learning to use the IC and while I'm not apprehensive about putting in the time to learn something new, the schedule I've been given to finish this project may not allow for that. What a bummer, I was just starting to understand the 4-wire circuit.
Or, maybe I misinterpreted the document and I'm stuck with my 4-wire load cell.
Thoughts?
EDIT: I just found this IC and despite the fact that Digikey want about $300 for one of them, it looks promising. 1B32
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