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