| 摘要 |
A device for an intrinsically safe redundant current supply of a field device 3 with a common current-limiting resistor 21 in series with the field device 3 and with redundant current supply units 11, 12. A current sensor 22 is provided in series with the field device 3, the output signal of the current sensor 22 is connected to a controllable voltage source 111, 121 in the redundant current supply units 11, 12. The current sensor 22 may be a diode or a resistor. |
