14 ER3000 User Manual
4.4 Setting up a Typical ER3000 Pressure Control System
One of the most commonly used modes of operation is shown in Figure 3. The
configuration shows the ER3000 with a 24 Volt power supply, pressure
regulator, 4-20mA transducer, RS232/RS485 converter, and an optional 25-9 pin
adapter cable. Note: For USB-RS485 converter, see instructions included with
converter.
Figure 3: ER3000 Typical System Wiring Diagram
4.4.1 Plumb the External Regulator and Transducer
If higher pressures or flows are required by the application or it is necessary to
isolate the controller from the process media, an air actuated mechanical
regulator can be used to boost the output and/or provide isolation.
Additionally, an external transducer may be used to sense the process pressure
supplied by the external regulator.
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