Manual
7. PRINCIPLE OF OPERATION
7.1 General ......................................................................................................................97
7.2 Square Law Flowmeter Considerations .....................................................................97
7.3 Flow Equations...........................................................................................................97
7.3.1 Flow Input Computation .............................................................................97
7.3.2 Pressure Computation ...............................................................................98
7.3.3 Temperature Computation..........................................................................98
7.3.4 Density/Viscosity Computation...................................................................98
7.3.5 Corrected Volume Flow Computation ........................................................99
7.3.6 Mass Flow Computation...........................................................................100
7.3.7 Combustion Heat Flow Computation .......................................................100
7.3.8 Heat Flow Computation............................................................................101
7.3.9 Sensible Heat Flow Computation .............................................................101
7.3.10 Liquid Delta Heat Computation ..............................................................101
7.3.11 Expansion Factor Computation for Square Law Flowmeters .................101
7.3.12 Uncompensated Flow Computation .......................................................102
7.4 Computation of the D.P. Factor ................................................................................103
8. RS-232 SERIAL PORT
8.1 RS-232 Serial Port Description ................................................................................104
8.2 Instrument Setup by PC Over Serial Port ................................................................104
8.3 Operation of Serial Communication Port with Printers .............................................104
8.4 SP4000 RS-232 Port Pinout ....................................................................................104
9. RS-485 SERIAL PORT
9.1 RS-485 Serial Port Description ................................................................................105
9.2 General ....................................................................................................................105
9.3 Operation of Serial Communication Port with PC ....................................................105
9.4 SP4000 RS-485 Port Pinout ....................................................................................105
10. FLOW COMPUTER SETUP SOFTWARE
10.1 System Requirements ............................................................................................106
10.2 Cable and Wiring Requirements ............................................................................106
10.3 Installation for Windows™3.1 or 3.11.....................................................................106
10.4 Using the Flow Computer Setup Software .............................................................106
10.5 File Tab...................................................................................................................107
10.6 Setup Tab ...............................................................................................................107
10.7 View Tab.................................................................................................................108
10.8 Misc. Tab ................................................................................................................108
11. GLOSSARY OF TERMS
10 Glossary Of Terms ....................................................................................................109
12. Diagnosis and Troubleshooting
12.1 Response of SP4000 on Error or Alarm ................................................................. 112
12.2 Diagnosis Flowchart and Troubleshooting ............................................................. 112
12.3 Error Messages ...................................................................................................... 113
Appendix A
Fluid Properties Table .................................................................................................... 116
Appendix B - Setup Menus
Setup Menus with Operator Code Access ..................................................................... 117
Setup Menus with Supervisor Code Access .................................................................. 118
Warranty ...................................................................................................................................... 119
Decoding Part Number................................................................................................................ 119
CONTENTS