YOKOGAWA Dpharp EJX110A - Page 3

ii
IM 01C25B01-01E
5. Installing Impulse Piping ......................................................................... 5-1
5.1 Impulse Piping Installation Precautions ........................................................5-1
5.1.1 Connecting Impulse Piping to a Transmitter ......................................5-1
5.1.2 Routing the Impulse Piping ................................................................5-3
5.2 Impulse Piping Connection Examples ...........................................................5-4
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Conguration ............................................................................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
7.2.1 Adjusting Zero Point for Differential Pressure Transmitters ..............7-3
7.2.2 Adjusting Zero Point for Gauge/Absolute Pressure Transmitters ....7-3
7.3 Starting Operation ............................................................................................7-3
7.4 Shutting Down the Transmitter .......................................................................7-4
7.5 Venting or Draining Transmitter Pressure-detector Section .......................7-4
7.5.1 Draining Condensate .........................................................................7-4
7.5.2 Venting Gas........................................................................................7-5
7.6 Setting the Range Using the Range-setting Switch ......................................7-5
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 Cleaning and Replacing the Capsule Assembly ...............................8-4
8.4.4 Replacing the Process Connector Gaskets .......................................8-6