vii ST 800 Pressure Transmitter User’s Manual Revision 15 
 
4Operation.............................................................................................................................................................22 
4.1 Overview.....................................................................................................................................................22 
4.2 Three-Button Operation...............................................................................................................................22 
4.2.1 Menu Navigation ........................................................................................................................................23 
4.2.2 Data Entry ...................................................................................................................................................24 
4.2.3 Editing a Numeric Value.............................................................................................................................24 
4.2.4 Selecting a new setting from a list of choices .............................................................................................24 
4.2.5 The Advanced Display Menus ....................................................................................................................25 
4.2.6 The Standard Display Menu........................................................................................................................40 
4.2.7 The Basic Display Menu.............................................................................................................................76 
4.2.8 Selecting a new setting from a list of choices .............................................................................................80 
4.3 Three Button Operation with no display Installed.......................................................................................80 
4.3.1 Zero Adjustment .........................................................................................................................................80 
4.3.2 Span Adjustment.........................................................................................................................................80 
4.4 Changing the Default Failsafe Direction .....................................................................................................81 
4.4.1 DE and Analog Differences.........................................................................................................................81 
4.4.2 Procedure to Establish Failsafe Operation...................................................................................................81 
4.5 Monitoring the Basic, Standard and Advanced Displays.............................................................................84 
4.5.1 Basic Display ..............................................................................................................................................84 
4.5.2 Standard Display.........................................................................................................................................84 
4.5.3 Advanced Display.......................................................................................................................................85 
4.5.4 Button operation during monitoring............................................................................................................87 
5Maintenance........................................................................................................................................................88 
5.1 Overview.....................................................................................................................................................88 
5.2 Preventive Maintenance Practices and Schedules........................................................................................88 
5.3 Inspecting and Cleaning Barrier Diaphragms..............................................................................................88 
5.4 Replacing the Communication Module.......................................................................................................91 
5.5 Replacing the Meter Body...........................................................................................................................93 
5.6 PILD Option Licensing ...............................................................................................................................96 
6Calibration...........................................................................................................................................................97 
6.1 Recommendations for Transmitter Calibration...........................................................................................97 
6.2 Calibration Procedures ................................................................................................................................97 
6.2.1 Dual/Triple Cal............................................................................................................................................97 
7Troubleshooting..................................................................................................................................................98 
7.1 Overview.....................................................................................................................................................98 
7.2 Critical Diagnostics Screens........................................................................................................................98 
7.2.1 Fault Conditions and Recommended Corrective Actions............................................................................98 
8Parts List ...........................................................................................................................................................100 
8.1 Overview...................................................................................................................................................100 
9PRODUCT CERTIFICATIONS ......................................................................................................................114 
9.1 Safety Instrumented Systems (SIS) Installations.......................................................................................114 
9.2 European Directive Information (CE Mark)..............................................................................................114 
9.3 Hazardous Locations Certifications...........................................................................................................120 
9.4 Control Drawing........................................................................................................................................124 
9.5 Marine Approvals .....................................................................................................................................129 
9.6 MeasurementInstruments Directive (MID)...............................................................................................129 
9.7 Recycling and disposal of product.............................................................................................................130 
Glossary....................................................................................................................................................................131