Promag 53 PROFIBUS-DP/-PA 1 Safety instructions
Endress+Hauser 5
1 Safety instructions
1.1 Designated use
The measuring device described in this Operating Instruction is to be used only for
measuring the flow rate of conductive fluids in closed pipes. A minimum conductivity of
20
µS/cm is required for measuring demineralised water. Most fluids can be metered,
provided they have a minimum conductivity of 5
µS/cm, for example:
• acids, alkalis, pastes, mashes, pulps,
• drinking water, wastewater, sewage sludge,
• milk, beer, wine, mineral water, yogurt, molasses, etc.
The manufacturer accepts no liability for damages resulting from incorrect use or use
not as designated.
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 authorised to perform
such work by the facility's owner-operator. The specialist must have read and under-
stood this Operating Instruction and must follow the instructions it contains.
• The device must be operated by persons authorised and trained by the facility's
owner-operator. Strict compliance with the instructions in the Operating Instruction is
mandatory.
• Endress+Hauser will be happy to assist in clarifying the chemical resistance proper-
ties of parts wetted by special fluids, including fluids used for cleaning.
• If welding work is performed on the piping system, do not ground the welding appli-
ance through the Promag flowmeter.
• 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 insulated.
• 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 this Operating instruction. Strict com-
pliance with the installation instructions and ratings as stated in this supplementary
documentation is mandatory. The symbol on the front of this supplementary Ex docu-
mentation indicates the approval and the test center ( f Europe, h USA,
g Canada).
• The measuring device complies with the general safety requirements in accordance
with EN 61010, the EMC requirements of EN 61326, and NAMUR recommendation
NE 21.
• Depending on the application, the seals of the process connections of the Promag H
sensor require periodic replacement.
• The manufacturer reserves the right to modify technical data without prior notice. Your
E+H distributor will supply you with current information and updates to this Operating
Instruction.
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