KROHNE OPTIMASS with MFC 05x EN - Manual (Page 35)

Installation and Operating Instructions OPTIMASS 34
1.4.7 Heating and insulation
Insulation
OPTIMASS 8000
Where insulation is required a variety of materials may be used to insulate the meter. Care must be taken
not to insulate the meter above the halfway mark of the electronics support post as shown in the sketch.
Do not insulate above
this line.
Strongly recommended >
100°C
Above 150°C,
recommended to use
factory supplied option.
For insulated meters without heating jackets, repeated heating or cooling at rates > 30°C per hour should
be avoided to increase operational lifespan of meter
OPTIMASS 9000 -
The OPTIMASS 9000 will always be supplied with factory fitted insulation or heating
option
Electrical Heating
Electrical tape heating may be used. Do not heat above line as shown above.
Max heating temperature is 230°C or 446°F for OPTIMASS 8000 and 350°C or 662°F for OPTIMASS
9000.
Observe Ex limits.
Liquid / Steam heating jacket
The meter can be supplied with a heating jacket.
This jacket is designed to minimise the differential stress
across the meter where differences in temperature between
outer cylinder and measuring tube exist.
The connections to the heating jacket
are DN15 PN40, ANSI ½” 150lbs or JIS 10K 15A
Protection is IP54. Install protective roof if necessary.
Important:
Always heat jacket to working temperature
before flowing product in measuring tube.
Repeated heating or cooling at rates > 30°C
per hour should be avoided to increase operational
lifespan of meter.
Note :
Max heating medium temperature is 230°C or 446°F for OPTIMASS 8000 and 350°C or 662°F for
OPTIMASS 9000. Observe Ex limits also. Maximum heating medium pressure limited by jacket
connections. Refer to de-rating curves as per section 1.4.5.
Process Connection
Heating Connection
Optional Drain/Vent