Union Instruments CWD 2005 - Page 7

Manual CWD 2005
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Manual CWD2005.doc 7
6.2.1.5.3. Dual Sample Streams ..................................................................... 69
6.2.2. Trend Display .................................................................................. 70
6.2.2.1. Move cursor .................................................................................... 71
6.2.2.2. Change time .................................................................................... 71
6.2.2.3.  ......................................................................... 72
6.2.2.4. Change signals ............................................................................... 73
6.2.2.5. Change units ................................................................................... 74
6.2.3. Event List ........................................................................................ 75
6.2.4. Device Info ...................................................................................... 76
7. Maintenance .................................................................................... 78
7.1. Safety instructions for maintenance or repair .................................. 78
7.2. Periodic maintenance ...................................................................... 78
7.3. Consumables .................................................................................. 78
7.4. Replacement I/O Boards ................................................................. 79
7.5. Spare parts packages ..................................................................... 79
8. Troubleshooting .............................................................................. 80
8.1. Event list .......................................................................................... 80
8.2. Unstable readings ........................................................................... 80
8.3. Drift in readings ............................................................................... 80
8.4. Incomplete ignition .......................................................................... 81
8.5. Software troubleshooting ................................................................. 81
9. Measurement principle .................................................................... 84
9.1. Heating Value measurement, an overview ...................................... 84
9.2. Thermopile measuring system ........................................................ 85
9.2.1. Specific Gravity measuring cell ....................................................... 87
9.2.2. Operational overview of the measuring cell ..................................... 87
9.2.3. Functional diagram .......................................................................... 88
9.2.4. Output signals ................................................................................. 88
9.2.5. Commissioning ................................................................................ 88
9.2.6. Testing and calibration .................................................................... 89
9.2.7. Maintenance .................................................................................... 89
9.2.8. Technical specifications .................................................................. 89
10. Circuit diagrams .............................................................................. 90
10.1. Input-Output card: E/A internal ........................................................ 90
10.2. Input-Output Card E/A external ....................................................... 93
10.2.1. Input-Output Card E/A external Type _06 ....................................... 93
10.2.1.1. Relay outputs .................................................................................. 94
10.2.1.2. Analog outputs ................................................................................ 95
10.2.1.3. Digital/ Relay contact inputs ............................................................ 96
10.2.1.4. Open collector drives or mA outputs ............................................... 97
10.2.1.5. Serial interface RS232 (Option) ...................................................... 98
10.2.1.6. Profibus-DP Interface ...................................................................... 99
11. Appendices ................................................................................... 100