KROHNE OPTIMASS with MFC 300 EN - Manual (Page 48)

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Titanium Tubes and optional
secondary pressure containment
100 bar at 20°C or 1450 psi at 68°F
De-rated to
63 bar at 150°C or 580 psi at 300°F (06...25)
50 bar at 150°C or 725 psi at 300°F (40...80)
Standard secondary pressure containment 63 bar at 20°C or 910 psi at 68°F
De-rated to 40 bar at 150°C or 580 psi at 300°F
Hastelloy and SS & Tantalum
measuring tubes rating
50 bar at 20°C or 725 psi at 68°F
De-rated to 40 bar at 100°C or 580 psi at 210°F
Heating Jacket (Titanium) 10 bar at 150°C or 145 psi at 300°F
Heating Jacket (SS/Hastelloy/Tantalum) 10 bar at 100°C or 145 psi at 210°F
130°C option on measuring tube 10 bar at 130°C or 145 psi at 266°F
Version Titanium Meter SS 318 Meter
All welded DIN 11864-2
All welded Tri-Clamps
Titanium Grade 2 UNS 31803
Adaptor versions 316L Stainless Steel 316L Stainless Steel
EPDM seals EPDM seals
Hygienic Connection Materials
Unless specifically requested, internal surfaces are not polished and no warranty is made as to
the surface finish. If polishing option and /or EHEDG, ASME Bio-Processing or 3A approvals
was selected at time of order, all product contact surfaces are polished 0.5 micrometer Ra (20
CLA) finish or better.
Use of OPTIMASS 7000 SS sensors above 100°C (Hygienic Connections only)
Sizes 25S, 40S, 50S and 80S sensors with hygienic connections may be exposed to tempera-
tures above 100°C (212°F) up to a maximum of 130°C (266°F) for a maximum of 2 hours (e.g.
for steam cleaning purposes). The maximum temperature shock permitted either from cold to
hot or from hot to cold is 110°C (230°F).
For example, a meter measuring a product at 20°C (68°F) can be steam cleaned at 130°C
(266°F), but a meter measuring a product at 5°C (41°F) can only be steam cleaned at 115°C.
(239°F) After steam cleaning at 130°C (266°F) the minimum allowed temperature of the prod-
uct introduced immediately afterwards is 20°C (68°F).
Operation outside these guidelines may cause shifts in the mass flow and density calibration.
Repeated shocking may also cause premature failure of the meter.
7.6 Pressure Ratings
Meter data plates are stamped with maximum pressure rating (at 20°C and max. operating
temperature) of connection, primary tube or secondary pressure containment (whichever is the
lower).
Titanium tubes can handle a higher pressure, but where this exceeds the pressure rating, a
relief or burst disc has to be fitted to the secondary pressure containment. This can be done as
a special but is only available for meter sizes up to 25.