Process Temperature And Pressure Rating; Flange Rating; Plate Design - Emerson Rosemount 3308A Reference Manual

Specifications and Reference Data
August 2017
A.2.5 Process temperature and
pressure rating
Figure A-7 gives the maximum process temperature
(measured at the lower part of the flange or threaded
connection) and pressure rating.
Final rating depends on flange, material of construction, and
O-ring selection.
Figure A-7. Max. Rating, Standard Tank Connections
Pressure psig (bar)
580 (40)
232 (16)
-14 (-1)
-40
(-40)
Table A-5. Temperature Ranges for Standard Tank Seals
with Different O-ring Materials
O-ring material
®
Viton Fluoroelastomer
Ethylene Propylene (EPDM)
®
Kalrez 6375
Perfluoroelastomer
Nitrile Butadiene (NBR)
Note
Always check the chemical compatibility of the O-ring
material with your application. If the O-ring material is not
compatible with its chemical environment, the O-ring may
eventually malfunction.
A.2.6 Flange rating
ASME
316L SST flanges according to ASME B16.5 Table 2-2.3:
Max. 302 °F/580 psig (150 °C/40 bar)
Alloy C-276 (UNS N10276) flanges according to ASME B16.5
Table 2-3.8:
Max. 302 °F/580 psig (150 °C/40 bar)
118
PRELIMINARY
PTFE covered
probe and flange
(model code 7)
Temperature °F (°C)
302
(150)
Temperature °F (°C) in air
Minimum Maximum
5 (-15) 302 (150)
-40 (-40) 266 (130)
14 (-10) 302 (150)
-31 (-35) 230 (110)
Duplex 2205 (UNS S31803) flanges according to ASME
B16.5 Table 2-2.8:
Max. 302 °F/580 psig (150 °C/40 bar)
EN
EN 1.4404 according to EN 1092-1 material group 13E0:
Max. 302 °F/580 psig (150 °C/40 bar)
Alloy C-276 (UNS N10276) flanges according to EN 1092-1
material group 12E0:
Max. 302 °F/580 psig (150 °C/40 bar)
Duplex 2205 (EN 1.4462) flanges according to EN 1092-1
material group 16E0:
Max. 580 psig (40 Bar), -22 °F (-30 °C) up to max 302 °F
(1)
(150 °C)
JIS
316L SST Flanges according to JIS B2220 material group 2.3:
Max. 302 °F/580 psig (150 °C/40 bar)
™
Fisher and Masoneilan
316L SST Flanges according to ASME B16.5 Table 2-2.3:
Max. 302 °F/580 psig (150 °C/40 bar)
Table A-6. Tri Clamp Rating
Size Maximum pressure (bar)
1½-in. (37.5 mm) 16
2-in. (50 mm) 16
3-in. (75 mm) 10
4-in. (100 mm) 10
1. The final rating depends on the clamp and gasket.
A.2.7 Plate design
Certain models of flanged alloy and PTFE covered probes
have a tank connection design with a protective flange plate
of the same material as the probe and with a backing flange
in 316L/EN 1.4404. The protective flange plate prevents the
backing flange from being exposed to the tank atmosphere.
Flange rating according to SST backing flange ASME B16.5
Table 2-2.3, EN 1092-1 material group 13E0, and JIS B2220
material group 2.3.
PTFE protective plate:
Max. 302 °F/232 psig (150 °C/16 Bar)
1. Minimum temperature limit due to EN13445-2.
Reference Manual
00809-0100-4308, Rev CA
™
(1)
Specifications and Reference Data