KROHNE OPTIMASS with MFC 300 EN - Manual (Page 11)

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OPTIMASS 8000 / 8300 / 8010 -180°C...230°C and 100 to 26,000 kPa
OPTIMASS 9000 / 9300 / 9010 0°C...350°C and 100 to 26,000 kPa
If the primary seal fails, the casing of the meter will fill with liquid and the meter will stop
working. The meter will notify the operator by going into mode and a diagnostic
error will be shown on the MFC300 or PLC display. This is an indication that the primary seal
(tube/s) has failed and the status of the meter should be checked.
Meter Status:
The meter will also go into mode if the primary seal (tube/s) fail, or are not com-
pletely filled with fluid. For example, if the meter is drained or re/filled. To check the status of
the meter, drain and re/fill with fluid and note the MFC300 or PLC display. See section11.5 for a
list of status messages and diagnistics information.
If the meter remains in mode you MUST assume that the primary seal (tube/s) has
failed and the appropriate action MUST be taken.
Gases (Example model code: OPTIMASS 1000C S25 – GAS)
Pressure/Temperature data:
OPTIMASS 1000 / 1300 / 1010 -40°C...130°C and +500 to +10,000 kPa
OPTIMASS 2000 / 2300 / 2010 -45°C...130°C and +500 to +15,000 kPa
OPTIMASS 3000 / 3300 / 3010 -40°C...150°C and +500 to +15,000 kPa
OPTIMASS 7000 / 7300 / 7010 -40°C...150°C and +500 to +10,000 kPa
OPTIMASS 8000 / 8300 / 8010 -180°C...30°Cand +2000 to +26,000 kPa
OPTIMASS 9000 / 9300 / 9010 0°C...350°C and +2000 to +26,000 kPa
Pressures and/or temperatures may be further limited by tube, temperature, connection and
Ex limits. Consult the meter data plates and relevant documentation for full details.
On all meters operating on gas measurement the casing of the meter is fitted with a burst disc.
If the the primary seal (tube/s) fails leakage will occur from the burst disc.
Install the meter so that the burst disc is pointing away from personnel.
Regular Maintenance of Burst Disc:
Carry out regular maintenance checks on burst discs for leakage and/or blockages.
On all OPTIMASS meters, the primary seal is considered to be the measuring tube of the
meter. The materials of construction of the measuring tube/s are described within the relevant
sections of this handbook and the customer’s product and any other fluid flowing through the
tube must be compatible with the material of construction.
If failure of the primary seal is suspected then the process line should be de-pressurised and
the meter removed as soon as it is safe to do so. Please then contact Krohne customer service
for servicing or replacement of the meter.