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Appendix A: Technical reference
A.4 Process Pressure/Temperature derating curves
SITRANS LR250 with FOUNDATION FIELDBUS
Operating Instructions, 09/2021, A5E32221411-AH
247
ASME B16.5, Class 150: 2", 3", and 4" NPS
①
Atmospheric
P
Allowable operating pressures
T
Allowable operating temperatures
ASME B16.5, Class 300: 2", 3", and 4" NPS
①
Atmospheric
P
Allowable operating pressures
T
Allowable operating temperatures