Yokogawa EJX115A - Manual (Page 3)

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IM 01C25K01-01E
5. Installing Impulse Piping ......................................................................... 5-1
5.1 Process Piping Installation Precautions ........................................................5-1
5.1.1
Connecting Process Piping to the Transmitter ..................................5-1
5.1.2 Routing the Process Piping ...............................................................5-1
5.2 Process Piping Connection Examples ...........................................................5-2
6. Wiring ......................................................................................................... 6-1
6.1 Wiring Precautions ...........................................................................................6-1
6.2 Selecting the Wiring Materials .........................................................................6-1
6.3 Connections of External Wiring to Terminal Box ..........................................6-1
6.3.1
Power Supply Wiring Connection ......................................................6-1
6.3.2 External Indicator Connection............................................................6-1
6.3.3 Communicator Connection ................................................................6-1
6.3.4 Check Meter Connection ...................................................................6-2
6.3.5 Status Output Connection ..................................................................6-2
6.4 Wiring .................................................................................................................6-2
6.4.1
Loop Configuration ............................................................................6-2
6.4.2 Wiring Installation ...............................................................................6-2
6.5 Grounding ..........................................................................................................6-3
6.6 Power Supply Voltage and Load Resistance .................................................6-3
7. Operation ................................................................................................... 7-1
7.1 Preparation for Starting Operation .................................................................7-1
7.2 Zero Point Adjustment .....................................................................................7-2
7.3 Starting Operation ............................................................................................7-2
7.4 Shutting Down Operation ................................................................................7-3
7.5 Transmitter Measurement Range (Determining Differential Pressure Range)
.............................................................................................................................7-3
7.5.1
Determining the Differential Pressure Range ....................................7-3
7.5.2 Example of Calculation ......................................................................7-4
7.6 Venting or Draining Transmitter Pressure-detector Section .......................7-6
7.6.1
Draining Condensate .........................................................................7-6
7.6.2 Venting Gas........................................................................................7-6
7.7 Setting the Range Using the Range-setting Switch ......................................7-6
8. Maintenance .............................................................................................. 8-1
8.1 Overview ............................................................................................................8-1
8.2 Calibration Instruments Selection ..................................................................8-1
8.3 Calibration .........................................................................................................8-1
8.4 Disassembly and Reassembly ........................................................................8-3
8.4.1
Replacing the Integral Indicator .........................................................8-3
8.4.2 Replacing the CPU Board Assembly .................................................8-4
8.4.3 Replacing the Process Connector Gaskets .......................................8-4
8.4.4 Cleaning Manifold Assembly and Replacing Orifice ..........................8-4
8.4.5 Cleaning and Replacing the Capsule Assembly ...............................8-5