7.3 Measuring accuracy of SITRANS P420.................................................................................73
7.3.1 Reference conditions.............................................................................................................73
7.3.2 Effect of auxiliary power supply..............................................................................................73
7.3.3 Gauge pressure.....................................................................................................................73
7.3.4 Gauge pressure from the differential pressure series ...........................................................74
7.3.5 Absolute pressure from gauge and differential pressure series.............................................76
7.3.6 Absolute pressure with front-flush diaphragm........................................................................77
7.3.7 Gauge pressure with front-flush diaphragm...........................................................................78
7.3.8 Differential pressure and flow.................................................................................................78
7.3.9 Level.......................................................................................................................................82
7.4 Operating conditions..............................................................................................................83
7.5 Vibration resistance................................................................................................................87
7.6 Construction...........................................................................................................................89
7.7 Torques..................................................................................................................................93
7.8 Display, keyboard and auxiliary power...................................................................................93
7.9 Certificates and approvals......................................................................................................94
8 Appendix A.................................................................................................................................................97
8.1 Technical support...................................................................................................................97
8.2 Certificates.............................................................................................................................98
Index...........................................................................................................................................................99
Table of contents
SITRANS P320/P420 (mA/HART)
Compact Operating Instructions, 06/2018, A5E38874562-AA 5
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