77
Part C
Special options, Functional checks, Service and Order
numbers
7.
Special Options
7.1
Use in hazardous areas
MFM 2081 K and MFM 3081 K - Ex Coriolis massflow meters are approved for use in
hazardous areas as electrical equipment in conformance with the harmonised European
Standards, Factory Mutual (FM) (pending), and Canadian Standards Association (CSA)
(pending). Conformity between the temperature classes and the temperature of the process
fluid, meter size and material of the measuring tube is defined in the test certificate. The Test
Certificate, certificate of conformity and wiring instructions are included in the Installation and
Operating instructions for Ex equipment.
This is a separate manual to the standard Installation and Operating manual and is only
supplied when an instrument for use in a hazardous area is ordered. If you have an “Ex”
instrument, please ensure that you have this manual and read it carefully before using the
massflow meter.
7.2
Converter with non-standard output options
The flowmeter may be supplied with one or more of the output options as mentioned in Part B,
Section 5.7. These are factory fitted options and changes should not be attempted by
unqualified personnel. Most of these options are hi-pot-tested to comply with the requirements
of Ex and CE and if field exchanged these requirements may be violated. * Krohne will also
not accept responsibility or honour the warranty if this is done. If you need an option change,
please contact your nearest office for advice.
*All options are not compatible in certain configurations with older versions of software.
7.3
Concentration measurement and Special Density Options
The Corimass P- and E-Series may be fitted with a concentration measurement option. This
option enables the meter to measure solute / solvent concentration of a two-component
solution as % by weight or volume, as well as
°
Brix or
°
Baumé, concentration by mass or
volume.
The fluid may be a liquid / liquid or a liquid / solid suspension mixture. If the meter has been
fitted with this option a separate Concentration manual will be supplied with the meter.
The special density option for Referred Density and Fixed Density is available as a factory set
option. This option is mutually exclusive with the Concentration option. The option is
described in Section 6.13.2 and 6.13.3.
If you have any questions, please contact your local Krohne office for further assistance.
7.4
Converter with Smart / Hart communication option
The instrument menu can be accessed and programmed remotely via the 4 - 20 mA output.
The following options are available:
a) H.H.C Hand-Held Communicator with Krohne Smart or Hart (may not be available at time
of first printing) communications protocol.
b) MS DOS PC via an RS 232 adaptor and CONFIG software
Detailed instructions are supplied when these options are purchased. Refer to the section with
the Order numbers for ordering details or contact Krohne.
