1 Safety instructions
1.1 Designated use
The measuring device described in these Operating Instructions is to be used only for measuring the mass flow rate of liquids and gases. At the same time, the system also measures fluid density and fluid temperature. These parameters are then used to calculate other variables such as volume flow.
Fluids with widely differing properties can be measured.
Examples:
• Chocolate, condensed milk, liquid sugar
• Oils, fats
• Acids, alkalis, lacquers, paints, solvents and cleaning agents
• Pharmaceuticals, catalysts, inhibitors
• Suspensions
• Gases, liquefied gases, etc.
Resulting from incorrect use or from use other than that designated the operational safety of the
measuring devices can be suspended. The manufacturer accepts no liability for damages being
produced from this.

1.2 Installation, commissioning and operation
Note the following points:
• Installation, connection to the electricity supply, commissioning and maintenance of the device
must be carried out by trained, qualified specialists authorized to perform such work by the
facility's owner operator. The specialist must have read and understood these Operating
Instructions and must follow the instructions they contain.
• The device must be operated by persons authorized and trained by the facility's owner-operator.
Strict compliance with the instructions in the Operating Instruction is mandatory.
• Endress+Hauser is willing to assist in clarifying the chemical resistance properties of parts wetted
by special fluids, including fluids used for cleaning. However, small changes in temperature,
concentration or the degree of contamination in the process can result in changes of the chemical
resistance properties. Therefore, Endress+Hauser can not guarantee or accept liability for the
chemical resistance properties of the fluid wetted materials in a specific application. The user is
responsible for the choice of fluid wetted materials in regards to their in-process resistance to
corrosion.
• If carrying out welding work on the piping, the welding unit may not be grounded by means of
the measuring device.
• The installer must ensure that the measuring system is correctly wired in accordance with the
wiring diagrams. The transmitter must be grounded, unless the power supply is galvanically
isolated.
• Invariably, local regulations governing the opening and repair of electrical devices apply.

1.3 Operational safety
Note the following points:
• Measuring systems for use in hazardous environments are accompanied by separate "Ex
documentation", which is an integral part of these Operating Instructions. Strict compliance with
the installation instructions and ratings as stated in this supplementary documentation is
mandatory.
The symbol on the front of this supplementary Ex documentation indicates the approval and the
certification body ( 0 Europe, 2 USA, 1 Canada).
• The measuring device complies with the general safety requirements in accordance with
EN 61010-1, the EMC requirements of EN 61326/A1, and NAMUR Recommendation NE 21,
NE 43 and NE 53.
• For measuring systems used in SIL 2 applications, the separate manual on functional safety must
be observed.
• The manufacturer reserves the right to modify technical data without prior notice. Your
Endress+Hauser distributor will supply you with current information and updates to these
Operating Instructions.

1.4 Return
The following procedures must be carried out before a flowmeter requiring repair or calibration, for
example, is returned to Endress+Hauser:
• Always enclose a duly completed "Declaration of contamination" form. Only then can
Endress+Hauser transport, examine and repair a returned device.
• Enclose special handling instructions if necessary, for example a safety data sheet as per
EN 91/155/EEC.
• Remove all residues. Pay special attention to the grooves for seals and crevices which could
contain residues. This is particularly important if the substance is hazardous to health, e.g.
flammable, toxic, caustic, carcinogenic, etc.
With Promass A and Promass M the threaded process connections must first be removed from the
sensor and then cleaned.
Note!
You will find a preprinted "Declaration of contamination" form at the back of this manual.
# Warning!
• Do not return a measuring device if you are not absolutely certain that all traces of hazardous
substances have been removed, e.g. substances which have penetrated crevices or diffused
through plastic.
• Costs incurred for waste disposal and injury (burns, etc.) due to inadequate cleaning will be
charged to the owner-operator.

1.5 Notes on safety conventions and icons
The devices are designed to meet state-of-the-art safety requirements, have been tested, and left the
factory in a condition in which they are safe to operate. The devices comply with the applicable
standards and regulations in accordance with EN 61010-1 "Protection Measures for Electrical
Equipment for Measurement, Control, Regulation and Laboratory Procedures". The devices can,
however, be a source of danger if used incorrectly or for other than the designated use.
Consequently, always pay particular attention to the safety instructions indicated in these Operating
Instructions by the following icons:
# Warning!
"Warning" indicates an action or procedure which, if not performed correctly, can result in injury
or a safety hazard. Comply strictly with the instructions and proceed with care.
" Caution!
"Caution" indicates an action or procedure which, if not performed correctly, can result in incorrect
operation or destruction of the device. Comply strictly with the instructions.
! Note!
"Note" indicates an action or procedure which, if not performed correctly, can have an indirect
effect on operation or trigger an unexpected response on the part of the device.