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11. Communications Function ..................................................................................................................................131
11.1 Connections with HHT Terminal..................................................................................................................131
11.2 Procedures for Communication with HHT ...................................................................................................132
11.3 Notes on Communications ..........................................................................................................................133
12. Self-Diagnosis and Alarms..................................................................................................................................134
12.1 Self-Diagnosts.............................................................................................................................................134
12.2 Output Status for Errors and Alarms............................................................................................................137
13. Maintenance and Troubleshooting.....................................................................................................................138
13.1 Maintenance................................................................................................................................................139
13.2 Troubleshooting...........................................................................................................................................140
13.2.1 Flow rate is not indicated...............................................................................................................140
13.2.2 Flow rate indication is not correct..................................................................................................141
13.2.3 Flow rate indication is not stable....................................................................................................142
13.2.4 When switch operation is unable...................................................................................................143
14. Principle of Operation..........................................................................................................................................144
15. Specifications.......................................................................................................................................................145
15.1 Specifications ..............................................................................................................................................145
15.2 Model Number Table...................................................................................................................................149
16. Outline Drawing....................................................................................................................................................151
Appendix 1.....................................................................................................................................................................152
Appendix 2 ....................................................................................................................................................................154