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Varec 2920 - Page 2

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Table of Contents

Default Chapter7
- Table of Contents7
Introduction11
- Function & System Design12
Installation17
Mounting23
Wiring27
Display and Configuration Interface61
Bi-Phase Mark111
- Basic Parameters111
Modbus115
- Basic Parameters115
- 2920 EIA-485 MODBUS Hardware Setup118
  - Terminating the MODBUS Network118
  - Setting the Bias Current119
Mark/Space121
- Basic Parameters121
L&J Tankway123
- Basic Parameters123
Configuring HART Devices127
- Displaying HART Data on the LCD129
Configuration & Calibration - Level, Limits, and Outputs131
Maintenance and Troubleshooting139
- Maintenance139
- Troubleshooting142
Specifications149
Ordering Information155
- Order Code Table155
Modbusappendix a - MODBUS Implementation159
Appendix B - RTD Resistance - Temperature Charts179
Appendix C - Bi-Phase Mark Implementation187
- Implementation187
Appendix D - Associated Intrinsically Safe Control Drawing189

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