Operating Instructions

Table Of Contents
ASME B16.5, Class 150: 2", 3", and 4" NPS
50°C
(12F)
10 bar (145 psi)
RT-50°C
(-58°F)
-29°C
(-20°F)
0°C
(32°F)
20 bar (290 psi)
30 bar (435 psi)
40 bar (580 psi)
P
100°C
(21F)
150°C
(30F)
250°C
(48F)
200°C
(39F)
T
ASME 150#
-1 bar (-14.5 psi)
100°F
(38°C)
14°F
(-10°C)
-40°F
(-40°C)
200°F
(93°C)
300°F
(14C)
400°F
(20C)
1
Atmospheric
P Allowable operating pressures
T Allowable operating temperatures
ASME B16.5, Class 300: 2", 3", and 4" NPS
100°F
(38°C)
50°C
(12F)
10 bar (145 psi)
RT-50°C
(-58°F)
-29°C
(-20°F)
0°C
(32°F)
14°F
(-10°C)
-40°F
(-40°C)
20 bar (290 psi)
30 bar (435 psi)
40 bar (580 psi)
P
100°C
(21F)
150°C
(30F)
200°F
(93°C)
300°F
(14C)
250°C
(48F)
200°C
(39F)
400°F
(20C)
T
-1 bar (-14.5 psi)
ASME 300#
1
Atmospheric
P Allowable operating pressures
T Allowable operating temperatures
Appendix A: Technical reference
A.5 Process Pressure/Temperature derating curves
SITRANS LR250 with mA/HART
238 Operating Instructions, 10/2019, A5E32220602-AG