KROHNE OPTIMASS with MFC 300 EN - Manual (Page 25)

25
OPTIMASS 5 OPTIMASS 2000
Note:
For additional temperature limits in hazardous area applications, reference should be made to
the publication “
Guidelines for the use of Coriolis Meters in Hazardous Areas”.
Where meters are mounted in direct sunlight, it is recommended to install a sunshade that
covers the converter and front end. This is particularly important in countries with high ambi-
ent temperatures.
The maximum differential temperature between the process and ambient temperature without
insulation is 110°C or 200°F.
To avoid thermal shock, the meter MUST NOT be subject to rapid changes in process tempra-
tures and reference should be made to the following table
Operation outside these limits may result in shifts in density and mass flow calibration.
Repeated shocking may also lead to premature failure of the meter! However, higher thermal
shocks are possible at lower working presures. Please consult Krohne for more information.
5.3 Pressure Equipment Directive (PED) requirements
To comply with the requirements of the PED in Europe, the following information is provided to
assist the plant engineer in installing the meter:
Measuring tube: Spigots
Stainless Steel UNS 531803 Stainless Steel UNS J902205
The outer cylinder 304 / 304L is dual certified (Optional outer cylinder of 316 / 316L).
Wiring feedthrough is made of Epoxy (or PEEK) with 2 ‘O’ ring seals in Fpm / fkm &
Hydrogenated Nitrile.
5.1 Specific Installation Guidelines
• Tighten flange bolts evenly.
• Observe the pipe end loads as shown in S.5.6
• It is permissible to support the weight of the meter on the body.
• Use of standard pipework reducers at the flange is allowed. Avoid extreme changes in pipe
size (step changes).
• The use of flexible hoses for connection to the process pipework is NOT recommended.
• The meter can be installed so that the converter is on the side of the meter, resulting in the
measuring tubes on top of each other, unless gases or solids are being measured.
• The 2000 series has exceptional immunity to cross-talk, therefore allowing meters to be
used in series or parallel
5.2 Ambient / Process temperatures
The specified and approved ambient and process temperatures must be observed.
Meter Max. Temperature Shift
S100 90°C (110°C with a max operating pressure of 40 barg)
S150 80°C
S250 50°C
SS318L
°C °F
Process All meters -45...+130 -49...266
Ambient
Compact Al. -40...+60 40...+140
Compact Al. with certain I/O options (consult Krohne) -40...+65 -40...+149
Compact SS -40...+55 -40...+131
Remote -40...+65 -40...+149