Measurement Computing Data Translation DT3010 Series User Manual page 72

+V
CC
4 to 20 mA
+
-
User-Supplied
Bias Return
Resistor
Supply a current shunt resistor to convert current to voltage;
Ω
250 for 4 to 20 mA = 1 to 5 V. The common side of the
external loop supply must either connect to analog ground
or, if needed, to a bias return resistor.
Figure 24: Connecting Current Inputs to the STP268-EC (Shown for Channel 0)
STP268-EC Panel
TB34
Analog Input 0
Analog Input 0 Return
Analog Ground
Wiring Signals
User-Supplied
Shunt Resistor
TB68
TB52
71