76
LEVELtrol-II Installation & Operating Instructions
ii
7. Principle Of Operation .................................................................................................................... 38
7.1 General Operation ........................................................................................................... 38
7.2 Determining the liquid quantity for various Tank Geometries .......................................... 38
7.3 Determining Liquid Level ................................................................................................. 38
7.4 Corrections for density in hydrostatic pressure
based level measurements .............................................................................................. 38
7.5 Computation of Corrected Volume in Tank and Mass in Tank.......................................... 39
7.6 Calculating the Expansion Factor For a Fluid .................................................................. 41
8. Test, Service and Maintenance ...................................................................................................... 42
8.1 Test Menus .......................................................................................................................42
8.1.1 TOP LEVEL TEST MENUS .......................................................................................... 42
8.2 Test Sub-Menus ............................................................................................................... 43
8.2.1 Audit Trail Submenu Group ........................................................................................... 43
8.2.2 Error History Submenu Group ...................................................................................... 43
8.2.3 Print System Setup Submenu Group ............................................................................ 43
8.2.4 Keypad test Submenu Group ........................................................................................ 44
8.2.5 Display test Submenu Group ........................................................................................ 44
8.2.6 - 8.2.16 Calibration Submenu Group ............................................................................ 45
8.2.17 Analog In Test Submenu Group .................................................................................. 49
8.2.18 Analog out test Submenu Group ................................................................................. 50
8.2.19 Pulse out test Submenu Group ................................................................................... 50
8.2.20 Relay test Submenu Group ........................................................................................ 50
8.2.21 Control input test Submenu Group ............................................................................. 50
8.2.22 Battery Voltage test Submenu Group ......................................................................... 51
8.2.23 Data logger utility Submenu Group ............................................................................. 51
8.3 Internal Fuse Replacement .............................................................................................. 52
8.4 Installing New Software ................................................................................................... 52
9. RS-232 Serial Port .........................................................................................................................53
9.1 RS-232 Port Description: ................................................................................................. 53
9.2 Instrument Setup by PC’s over Serial Port ...................................................................... 53
9.3 Operation of Serial Communication Port with Printers .................................................... 53
9.4 LEVELtrol-II RS-232 Port Pinout ...................................................................................... 53
10. RS-485 Serial Port (optional) ....................................................................................................... 54
10.1 RS-485 Port Description: ............................................................................................... 54
10.2 General ..........................................................................................................................54
10.3 Operation of Serial Communication Port with PC .......................................................... 54
10.4 LEVELtrol-II RS-485 Port Pinout .................................................................................... 54
11. Instrument Setup Software (optional) ........................................................................................... 55
11.1 System Requirements: ................................................................................................... 55
11.2 Cable and Wiring Requirements: ................................................................................... 55
11.3 Installation for Windows™ .............................................................................................. 55
11.4 Using the Setup Software .............................................................................................. 56
11.5 File Tab ...........................................................................................................................56
11.6 Setup Tab .......................................................................................................................56
11.7 View Tab .........................................................................................................................57
11.8 Misc. Tab ........................................................................................................................57
12. Glossary Of Terms ........................................................................................................................58
13. Diagnosis and Troubleshooting .................................................................................................... 62
13.1 Response of LEVELtrol-II on Error or Alarm: ................................................................. 62
13.2 Diagnosis Flow Chart and Troubleshooting ................................................................... 63
13.3 Error & Warning Messages: ........................................................................................... 64
13.3.1 Sensor/Process Alarms ............................................................................................... 64
13.3 Error & Warning Messages: (Continued) ....................................................................... 65
13.3.2 Self Test Alarms .......................................................................................................... 65
Appendix A .........................................................................................................................................66
Common Fluid Properties Table ............................................................................................. 66
Appendix B .........................................................................................................................................67
Setup Menus ..........................................................................................................................67
Appendix C .........................................................................................................................................67
RS485 Modbus RTU Protocol ................................................................................................ 68
CONTENTS
