Connecting field wiring to Zone 1 Analog I/O cards

The Analog I/O card provides eight analog input channels and four analog output channels. The analog input channels are Intrinsically Safe 2-wire 4-20 mA with HART and the analog output channels are Intrinsically Safe 4-20 mA with HART.

Figure: Field wiring connections for the Zone 1 Analog I/O card