CONTENTS
ii
7. PRINCIPLE OF OPERATION
7.1 General ..........................................................................................................38
7.2 Orifice Flowmeter Considerations .................................................................38
7.3 Flow Equations ..............................................................................................38
7.4 Calculating the Expansion Factor ..................................................................41
7.5 Computation of Viscosity Coef. A and B ........................................................42
7.6 Linearization Table ........................................................................................43
7.6.1 Linearization Table General Information .........................................43
7.6.2 Linearization Table for Pulse Inputs ................................................43
7.6.3 Linearization Table for Analog Inputs ..............................................43
7.6.4 Linearization Table Interpolation .....................................................43
8. TEST, SERVICE and MAINTENANCE
8.1 Test Menus ....................................................................................................44
8.2 Test Sub-Menus ............................................................................................45
8.2.1 Audit Trail ........................................................................................45
8.2.2 Error History ...................................................................................45
8.2.3 Print System Setup .........................................................................45
8.2.4 Keypad test .....................................................................................46
8.2.5 Display test .....................................................................................46
8.2.6 Calibrate CH1 0mA .........................................................................47
8.2.7 Calibrate CH1 20mA .......................................................................47
8.2.8 Calibrate CH2 0mA .........................................................................48
8.2.9 Calibrate CH2 20mA .......................................................................48
8.2.10 Calibrate CH1 0V ..........................................................................49
8.2.11 Calibrate CH1 10V ........................................................................49
8.2.12 Calibrate CH2 0V ..........................................................................50
8.2.13 Calibrate CH2 10V ........................................................................50
8.2.14 Calibrate 100 ohm RTD ................................................................50
8.2.15 Calibrate 4mA Out ........................................................................51
8.2.16 Calibrate 20mA Out ......................................................................51
8.2.17 Analog In Test ...............................................................................51
8.2.18 Pulse input test .............................................................................52
8.2.19 Analog out test ..............................................................................52
8.2.20 Excitation out test .........................................................................52
8.2.21 Pulse out test ................................................................................53
8.2.22 Relay test .....................................................................................53
8.2.23 Control input test ..........................................................................53
8.2.24 Battery Voltage test ......................................................................54
8.2.25 Data logger utility ..........................................................................54
8.3 Internal Fuse Replacement ...........................................................................55
9. RS-232 SERIAL PORT
9.1 RS-232 Serial Port Description .....................................................................56
9.2 Instrument Setup by PC Over Serial Port ......................................................56
9.3 Operation of Serial Communication Port with Printers ..................................56
9.4 FC-21 RS-232 Port Pinout ............................................................................56
10. RS-485 SERIAL PORT
10.1 RS-485 Serial Port Description ...................................................................57
10.2 General ........................................................................................................57
10.3 Operation of Serial Communication Port with PC .......................................57
10.4 FC-21 RS-485 Port Pinout ..........................................................................57
11. FLOW COMPUTER SETUP SOFTWARE
11.1 System Requirements .................................................................................58
11.2 Cable and Wiring Requirements ..................................................................58
11.3 Installation for Windows™3.1 or 3.11 ..........................................................58
11.4 Using the Flow Computer Setup Software ..................................................59
11.5 File Tab ........................................................................................................59
11.6 Setup Tab .....................................................................................................59
11.7 View Tab ......................................................................................................60
11.8 Misc. Tab ......................................................................................................60
12. GLOSSARY OF TERMS
12 Glossary Of Terms ..........................................................................................61
13. DIAGNOSIS AND TROUBLESHOOTING
13.1 Response of FC-21 on Error or Alarm: ........................................................65
13.2 Diagnosis Flow Chart and Troubleshooting .................................................66
13.3 Error & Warning Messages: ........................................................................67
13.3.1 Sensor/Process Alarms ................................................................67
13.3.2 Self Test Alarms ............................................................................68
APPENDIX A
Setup Menus .......................................................................................................69
