Connecting Current Loop Inputs - Measurement Computing Data Translation DT3010 Series User Manual

Chapter 4

Connecting Current Loop Inputs

Figure 22
Figure 23
Figure 24
Use current shunt resistor R17 to convert current
to voltage; 250
common side of the external loop supply must
either connect to analog ground or, if needed, to a
bias return resistor (R1 in this case).
Figure 22: Connecting Current Inputs to the DT740 (Shown for Channel 0)
Use current shunt resistor R17 to convert current to voltage;
external loop supply must either connect to analog ground or,
Note that the signals shown for the STP268 screw terminal
Figure 23: Connecting Current Inputs to the STP268 (Shown for Channel 0)
70
shows how to connect a current loop input to the DT740 screw terminal panel,
shows how to connect a current loop input to the STP268 screw terminal panel, and
shows how to connect a current loop input to the STP268-EC screw terminal panel.
+V
CC
4 to 20 mA
+
-
R1
Ω
for 4 to 20 mA = 1 to 5 V. The
+V
CC
4 to 20 mA
+
-
R1
Ω
250 for 4 to 20 mA = 1 to 5 V. The common side of the
if needed, to a bias return resistor (R1 in this case).
panel correspond to connector J1.
Analog Input 0
TB1
TB2
Analog Input 0
Return
Analog Ground
Analog Shield
Analog Input 0
TB1
TB2
Analog Input 0
Return
Analog Ground
DT740 Panel
R17
TB50
TB51
STP268 Panel
R17
TB34