产品中有6个输入量：2个24v工作电源的4-20ma输出电流传感器，4路pt100，原来设计采用2个开关电源，一个单独24V，另一个+12v -12v +5v，但是24v的电流传感器接入到12v工作电压的OP中，地线不同，会不会烧坏OP，采用OPA2277ua处理pt100信号的话，能否用单电源，求支持
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