Yokogawa EJX930A - Manual (Page 4)

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IM 01C25R01-01E
8. Operation ................................................................................................... 8-1
8.1 Preparation for Starting Operation .................................................................8-1
8.2 Zero Point Adjustment .....................................................................................8-2
8.2.1
Adjusting Zero Point for Differential Pressure....................................8-2
8.2.2 Adjusting Zero Point for Static Pressure ............................................8-3
8.2.3 Adjusting Zero Point for External Temperature ..................................8-3
8.3 Starting Operation ............................................................................................8-4
8.4 Shutting Down the Transmitter .......................................................................8-4
8.5 Venting or Draining Transmitter Pressure-detector Section .......................8-4
8.5.1
Draining Condensate .........................................................................8-5
8.5.2 Venting Gas........................................................................................8-5
9. Maintenance .............................................................................................. 9-1
9.1 Overview ............................................................................................................9-1
9.2 Calibration Instruments Selection ..................................................................9-1
9.3 Calibration .........................................................................................................9-1
9.3.1
Pressure and Static Pressure. ...........................................................9-1
9.3.2 External Temperature (RTD) ..............................................................9-2
9.4 Disassembly and Reassembly ........................................................................9-4
9.4.1
Replacing the Integral Indicator .........................................................9-4
9.4.2 Replacing the CPU Board Assembly .................................................9-5
9.4.3 Cleaning and Replacing the Capsule Assembly ...............................9-5
9.4.4 Replacing the Process Connector Gaskets .......................................9-7
9.5 Troubleshooting ................................................................................................9-7
9.5.1
Basic Troubleshooting .......................................................................9-7
9.5.2 Troubleshooting Flowcharts ...............................................................9-8
9.5.3 Alarms and Countermeasures .........................................................9-10
10. General Specifications .......................................................................... 10-1
10.1 Standard Specifications .................................................................................10-1
10.2 Model and Suffix Codes .................................................................................10-7
10.3 Optional Specifications ...............................................................................10-10
10.4 Dimensions ....................................................................................................10-14
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