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XTR106输入端接电阻桥,然后测量VREG与7脚电压不正确,输出电流不正确

Other Parts Discussed in Thread: XTR106

您好,我用的XTR106输入端是桥(桥是Honeywell压力传感器,SCX30DN),转换4~20mA电流输出。

现在测试,输出电流为16.4mA,无论我接电阻桥与没接,输出电流都是这样。

但现是接电阻桥与不接,测量1和7电压为5.5V,但V14-7电压为2V左右(接电阻桥为2.09V,没接电阻桥为1.896V),测量V13-7电压为1.2V左右,V10-7电压为21.7V,环路供电电压为DC24V。

下面附件是我画的电路图,麻烦工程师看看是什么原因。

Protel Schematic.pdf