Emerson Guided Wave Radar Level and Interface Transmitters 3300 - Manual (Page 109)

Reference Manual
00809-0100-4811, Rev CA
February 2006
A-5
Rosemount 3300 Series
The HP and HTHP versions have a ceramic tank seal, and graphite gaskets -
no O-rings are used.
The difference between the HP and HTHP versions is spacer material; PFA
for HP, and ceramics for HTHP. Ceramic spacers allow for usage in
applications with higher temperature.
The following table gives the temperature ranges for tank seal with different
O-ring material (applicable for the Standard Tank Connection):
Table A-1. Temperature range
for different tank seal material.
Flange connection rating
Flange strength calculations are made with the following conditions:
Calculations show that the following rating applies:
ANSI
According to ANSI B16.5 Table 2-2.3.
Standard: max. 302 °F/580 psig (150 °C/40 Bar).
HP/HTHP: Class 2500.
EN
According to EN 1092-1 Table 18, material group 13E0.
Standard: maximum 302 °F/580 psig (150 °C/40 Bar).
HP/HTHP: PN 320.
Tank Seal with different
O-ring material Min. Temperature
°F (°C) in air Max. Temperature
°F (°C) in air
Viton 5 (-15) 302 (150)
Ethylene Propylene (EPDM) -40 (-40) 266 (130)
Kalrez 6375 14 (-10) 302 (150)
Buna-N -31 (-35) 230 (110)
Bolting material Gasket Flange material Hub material
Standard/HTHP HP/HTHP
ANSI Stainless steel SA193
B8M C1.2 Soft (1a) with min.
thickness 1.6 mm. Spiral wound gasket with
nonmetallic filler (1b) Stainless steel A182
Gr. F316L and
EN 10222-5-1.4404. Stainless steel A479M
316L or
EN 10272-1.4404.
EN EN 1515-1/-2 group
13E0, A4-70. Soft (EN 1514-1) with
min. thickness 1.6 mm. Spiral wound gasket with
nonmetallic filler
(EN 1514-2)