Operating Instructions

Table Of Contents
A.5.1 Pressure Equipment Directive, PED, 14/68/EU
Siemens Level Transmitters with flanged, threaded, or sanitary clamp type process mounts
have no pressure-bearing housing of their own and, therefore, do not come under the Pressure
Equipment Directive as pressure or safety accessories (see EU Commission Guideline A-08
and A-20).
A.5.2 Stainless steel horn antenna
1.5", 2" and 3" [NPT, G (BSPP), R (BSPT)] Threaded Versions
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
-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
Appendix A: Technical reference
A.5 Process Pressure/Temperature derating curves
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG 235