KROHNE OPTIMASS 7000 EN - Manual (Page 13)

DEVICE DESCRIPTION
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OPTIMASS 7000
www.krohne.com 04/2013 - 4001016302 - MA OPTIMASS 7000 R02 en
To check the status of the meter, drain and re/fill with fluid and note the converter or PLC
display. See the relevant section of the converter handbook for a list of status messages and
diagnostics information.
If the meter remains in mode you MUST assume that the primary seal (tube) has failed
and the appropriate action MUST be taken.
Gases Gases Gases Gases (Example model code: OPTIMASS 7000C S25)
Pressure / temperature data: Pressure / temperature data: Pressure / temperature data: Pressure / temperature data:
OPTIMASS 7000 / 7300 / 7010 -40°C...+150°C and 500...10000 kPa
Pressures and/or temperatures may be further limited by tube, temperature, connection and Ex
limits. Consult the meter nameplate 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 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 the burst disc: Regular maintenance of the burst disc: Regular maintenance of the burst disc: Regular maintenance of the 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 contact customer service for servicing or replacement of the meter.
2.4 Temperature differential and thermal shock
Temperature differential Temperature differential Temperature differential Temperature differential
The maximum difference between ambient temperature and process (operating) temperature
varies according to the measuring tube material.
Extended range Extended range Extended range Extended range
Stainless Steel meters sizes 25, 40, 50 and 80 (fitted with hygienic connections) may be exposed
to a temperature difference of 110°C / 230°F for a maximum of 2 hours.
Meter Meter Meter Meter Maximum temperature differential Maximum temperature differential Maximum temperature differential Maximum temperature differential
Titanium +130°C / +266°F
Stainless Steel +80°C / +176°F
Hastelloy +80°C / +176°F
Tantalum +80°C / +176°F
MA_OPTIMASS_7000_en_042513_4001016302_R02.book Page 13 Tuesday, July 2, 2013 5:23 PM