Sensaphone Express II - Manual (Page 22)

20
Sensaphone ® Express II User’s Manual
Figure 6: 4–20mA transducer using internal power supply
To use an external power supply, wire the positive lead from the sensor to the positive terminal
on the external power source. Wire the negative lead from the sensor to a numbered input screw
on Express II. Next, connect the power supply to Express II by wiring the negative terminal on
the power supply to the corresponding common screw on Express. See Figure 7.