Both IA are Rail-to-Rail, single or dual power supply instrumentation amplifiers, however with different standard pin-outs. The gain is set by RG. RR1 and RR2 and CR form a voltage divider that could be used to offset the output signal. If no output level shift is desired then RR1 and CR should be omitted and RR2 should be a 0R resistor.
TINY LOAD CELL AMPLIFIER – [Link]
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