KROHNE OPTIMASS with MFC 300 EN - Manual (Page 68)

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Process Connections
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Heating Connections
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Optional Drain/Vent
OPTIMASS 9000
The OPTIMASS 9000 is 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 (446°F) for OPTIMASS 8000 and 350°C (662°F) for
OPTIMASS 9000.
Observe Ex limits.
Liquid / Steam Heating Jacket
The meter can be supplied with a heating jacket designed to minimise the differential stress
across the meter where there is a difference in temperature between the casing and the meas-
uring tube.
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 the jacket to working temperature before flowing the product through the measur-
ing tube.
Repeated heating or cooling at rates > 30°C per hour should be avoided to increase operational
lifespan of the meter.
Note:
Max heating medium temperature is 230°C (446°F) for OPTIMASS 8000 and 350°C (662°F) for
OPTIMASS 9000. You MUST observe Ex limits! Maximum heating medium pressure is limited by
jacket connections. Refer to de-rating curves as per section 8.5
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