
7.1 LCD display................................................................................................................................ 47
7.2 Compensated K-factor...............................................................................................................47
7.3 Meter body................................................................................................................................ 48
7.4 Meter factor...............................................................................................................................48
7.5 Variable mapping...................................................................................................................... 48
7.6 Pulse output.............................................................................................................................. 49
7.7 Signal processing.......................................................................................................................50
7.8 Special process variable units.....................................................................................................53
7.9 Flow totalizer............................................................................................................................. 54
Chapter 8 Troubleshooting...................................................................................................... 57
8.1 Communication problem with HART-based communicator.......................................................57
8.2 Incorrect Modbus communication output................................................................................. 57
8.3 Modbus communication setting fails to apply............................................................................57
8.4 Incorrect pulse output............................................................................................................... 58
8.5 Error messages on a HART-based communicator.......................................................................58
8.6 Flow in Pipe, No Output............................................................................................................. 58
8.7 No flow, output......................................................................................................................... 59
8.8 Diagnostic messages................................................................................................................. 60
8.9 Electronics test points................................................................................................................63
Chapter 9 Maintenance............................................................................................................67
9.1 Transient protection.................................................................................................................. 67
9.2 Installing the LCD indicator........................................................................................................ 68
9.3 Hardware replacement.............................................................................................................. 70
9.4 Return of material......................................................................................................................84
Appendix A Product Specifications..............................................................................................87
A.1 Physical specifications............................................................................................................... 87
A.2 Performance specifications........................................................................................................91
A.3 Typical flow rates.......................................................................................................................96
A.4 HART specifications.................................................................................................................104
A.5 Modbus RS-485 specifications................................................................................................. 108
A.6 LCD indicator functional specifications.................................................................................... 108
A.7 Quality certificate details......................................................................................................... 110
Appendix B Spacers.................................................................................................................. 113
Appendix C Electronics verification...........................................................................................115
C.1 Electronics verification using flow simulation mode.................................................................115
C.2 Fixed flow rate simulation........................................................................................................116
C.3 Varying flow rate simulation.................................................................................................... 116
C.4 Verify electronics using an external frequency generator.........................................................116
C.5 Output variable calculations with known input frequency........................................................118
C.6 Unit conversion table...............................................................................................................119
Contents Reference Manual
October 2021 00809-0400-4004
4 Rosemount™ 8800D Series Vortex Flow Meter with Modbus Protocol