Michell Instruments Liquidew EExd User Manual page 6

Appendices
Appendix A Technical Specification ............................................................................... 35
A.1
A.2
A.3
Appendix B Variable Definitions .................................................................................... 41
Appendix C Software ................................................................................................... 46
C.1
Appendix D Calibration Correction ................................................................................ 48
D.1
D.2
D.3
Appendix E Modbus RTU Communications .................................................................... 53
E.1
E.2
E.3
E.4
E.5
Appendix F Modbus RTU Details .................................................................................. 63
F.1
F.2
F.3
Appendix G Register Number Formats........................................................................... 70
Appendix H Hazardous Area Certification ...................................................................... 75
H.1
H.2
H.3
H.4
H.5
Appendix I Quality, Recycling & Warranty Information ................................................... 78
Appendix J Return Document & Decontamination Declaration ........................................ 80
vi
Mounting Drawing ....................................................................... 37
Pipework Connections .................................................................. 38
System Wiring Diagram ................................................................ 39
System Requirements .................................................................. 46
Overview .................................................................................... 48
Calibration Software ..................................................................... 49
Calibration Procedure ................................................................... 50
Introduction ................................................................................ 53
Modbus RTU Basics ...................................................................... 53
Physical Layer ............................................................................. 53
Termination Resistor .................................................................... 54
Register Map ............................................................................... 54
Message Framing ......................................................................... 63
Implemented Functions ................................................................ 64
Exceptions .................................................................................. 68
Product Standards ...................................................................... 75
Product Certification ................................................................... 75
Global Certificates/Approvals ....................................................... 75
Special Conditions of Use ............................................................. 76
Maintenance and Installation ........................................................ 76
Liquidew EExd User's Manual
97097 Issue 14.1, November 2019