The SB3042 provides a fully floating dc supply for energizing a conventional 2- or 3-wire 4/20mA transmitter located in the field and repeats the current in another floating circuit to drive a control-station load. For smart 2-wire transmitters, the SB3042 allows bi-directional HART

Dimension
114.5mm×99.0mm×17.5mm
 Number of channels
Two
 Input and output signal range
4 to 20mA
 Field side circuit load resistance
Max 550Ω (16V at 20mA)
 Input and output circuit ripple
<40μA peak-to-peak
 Transfer accuracy at 20°C
Better than 16μA
 Temperature drifts
<1μA/°C
 Response time
Settles to within 10% of final value after typically 500μs
 LED indicators
Green: power indication
 Power supply
Voltage: (20~35)VDC Current: (with two 20mA signals) 75mA at 20V 65mA at 24V 50mA at 35V Power: 1.56W typical at 24V with two 20mA signals
 Isolation
250V AC/DC between control station and filed circuits