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Dissolved Oxygen Controller
Teledyne Analytical Instruments vii
3.2.4.2 Setup Submenu 28
3.2.4.3 Status Menu 29
3.2.4.4 Exit/Stay Menu 30
3.3 Configuring the LXT-220 30
3.3.1 Password Protection 31
3.3.1.1 Changing Protection Level 33
3.3.1.2 Changing Operational Password 33
3.3.1.3 Changing Configuration Password 34
3.3.2 4-20 mA Output Assignments 35
3.3.3 Manual Mode Assignment 36
3.3.4 HART Output Assignments 38
3.3.5 Relay Assignments 40
3.3.6 Temperature Calibration 40
3.3.7 4-20 Trim 41
3.3.8 Input A/D Converter Trim 42
3.3.9 PID Assignments 43
3.4 Calibration 44
3.4.1 Manual Output Mode 44
3.4.2 Parameter Selection Menu 45
3.4.2.1 Buffer Menu 46
3.4.2.2 One-Point Buffer Calibration (Standardize) 46
3.4.2.3 Two-Point Buffer Calibration (Span) 47
3.4.2.4 Calibration Using a Grab Sample as a Standard 48
3.4.2.5 Calibration Error Detection & Electrode
Operational Guidelines 49
3.4.2.6 Back-to-Factory Calibration 49
Maintenance ................................................................................51
4.1 Routine Maintenance 51
4.1.1 Cleaning 51
4.1.2 Replacement of the Microprocessor: 51
Appendix .....................................................................................53
A.1 Specifications 53