to Daniel:
most of the loadcell had internal temperature compensation and to design a loadcell indecator also need to put it on the anloge side ( from input buffer side in most of the case) so if your loadcell need to be calibrate every day, try to check out your circuit or the loadcell itself.
there's so many kind of sensor to measureing the weigh but for sure , trucks and aspirins can not be the same ,maybe you should trying to us transducer.
for loadcell , back to 197x there's a company call Interface in Phoenix/USA check out there loadcell for trucks (if they still there).
have fun