5.5.15 Exit the MENU ............................................................................................................ 21
5.5.16 Sleeping mode ............................................................................................................ 22
5.5.17 Wake up the meter ...................................................................................................... 22
5.5.18 MENU key sequence for the settings............................................................................. 23
5.6 RS485 Modbus communication protocol ................................................................. 24
5.6.1 Hardware connection .................................................................................................. 24
5.6.2 Communication parameters ......................................................................................... 24
5.6.3 Frame ........................................................................................................................ 25
5.6.4 Function codes ........................................................................................................... 25
5.6.5 Registers .................................................................................................................... 25
6. Product selection and order information ...................................................29
6.1 Product selection .................................................................................................. 29
6.2 Order contact and customer support ...................................................................... 29
7. Technical specifications ............................................................................ 30
8. Technical notes for the product performance ............................................. 31
8.1 Measurement principle .......................................................................................... 31
8.2 Precautions for the best performance of the product ............................................... 31
8.2.1 Comparison with a third party reference meter .............................................................. 31
8.2.2 Particle contamination and fluidic cleanness ................................................................. 32
8.2.3 Apply to a different gas medium................................................................................... 32
9. Troubleshooting ...................................................................................... 33
10. Warranty and Liability .............................................................................. 34
11. Service contact ........................................................................................ 36
Appendix I: Product evaluation kit .................................................................. 37
Appendix II: Document history .......................................................................38
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