ii
Chapter 5 - Design Considerations, Electrical ............................ 13
Power Requirements ................................................. 13
Grounding Scheme ................................................... 13
Output Signal, Analog ............................................... 13
Digital Interfaces ........................................................ 14
Pin-out for Mini-DIN Connector ................................. 16
Chapter 6 - I/O Signal Description ................................................ 18
RS-232 Bi-Directional Interface ................................. 18
Analog Output of Mass Flow Rate ............................ 18
Optional User-Supplied Pressure Signal .................. 18
Chapter 7 - Specifications ............................................................. 20
Appendix A - Back-Pressure and Barometric Pressure -
Effect on Accuracy ................................................ 28
Appendix B - Standard Flow Rate vs. Volumetric Flow rate ...... 32
Appendix C - Digital Serial Interface ............................................ 34
Command Set Summary ........................................... 34
Command Set ........................................................... 38
Error Codes ............................................................... 62
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