TIME AND DATE ........................................................................................................35
VISIBILITY COMMISSIONING (TT700 ONLY) ............................................................37
5.3.1 Visibility Module Communication: .............................................................. 37
5.3.2 Transmissometer Alignment:........................................................................ 38
5.3.3 Final Alignment: ............................................................................................... 40
5.3.4 Transmissometer Detector Level Setup: ................................................... 42
5.3.5 Visibility Zero Calibration:.............................................................................. 44
E-CELL COMMISSIONING .........................................................................................45
5.4.1 E-Cell Module Communication:................................................................... 45
5.4.2 Detector Levels:................................................................................................. 46
5.4.3 Maintenance Due: ........................................................................................... 47
MAOUTPUT SETUP...................................................................................................48
5.6.1 Species Configuration: .................................................................................... 48
5.6.2 mA Zero Value: ................................................................................................ 48
5.6.3 mA Span Value: ............................................................................................... 49
5.6.4 DAC Zero / Span: ............................................................................................ 50
RELAY OUTPUT SETUP ..............................................................................................53
5.7.1 Relay Trigger Measurand: ............................................................................. 53
5.7.2 Relay Direction:..................................................................................................55
5.7.3 Relay Alarm Level:.............................................................................................55
6MAINTENANCE......................................................................................................... 56
VISIBILITY (TT700 ONLY)...............................................................................................56
6.1.1 Mechanical Check:........................................................................................... 56
6.1.2 Physical Alignment: ..........................................................................................57
ELECTROCHEMICAL CELL ..........................................................................................59
6.2.1 Mechanical Check:........................................................................................... 59
6.2.2 Span Check / Zero Calibration:.................................................................... 59
6.2.3 Zero Calibration: .............................................................................................. 62
6.2.4 E-Cell Replacement: ........................................................................................ 63
6.2.5 Replacement E-Cell PCBs: ............................................................................. 66
SPARE PARTS.............................................................................................................66
6.3.1 Optional Components: ...................................................................................66
7DATA COMMUNICATION ...................................................................................... 67
HARDWARE CONFIGURATION .......................................................................................67
7.1.1 System:................................................................................................................ 67
8TABLE OF FIGURES................................................................................................... 68
9APPENDIX 1: RS485 COMMUNICATIONS ........................................................... 69
MODBUS RTU COMMUNICATION..............................................................................70
9.1.1 Host Request Frame:....................................................................................... 70
9.1.2 Slave Response: (from Codel Modbus TunnelTech 700) ....................... 70
KEY MODBUS DATA REGISTER LOCATIONS..............................................................71
9.2.1 Configuring RS485 Protocol & Addressing.................................................72
10 APPENDIX 2 –DATA VALID & CUSTOM RELAY MEASURANDS ................... 74
10.1.1 Data valid........................................................................................................... 74
