Proline Prowirl 72 FOUNDATION Fieldbus 1 Safety instructions
Endress + Hauser 5
1 Safety instructions
1. 1 Designated use
The measuring system is used to measure the volume flow of saturated steam, superheated steam,
gases and liquids. If the process pressure and process temperature are constant, the measuring
device can also output the flow as the calculated mass flow or corrected volume flow.
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 resulting
from this.
1. 2 Installation, commissioning and operation
Note the following points:
• Installation, electrical installation, 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 these Operating Instructions 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.
• The installer must ensure that the measuring system is correctly wired in accordance with the
wiring diagrams.
• Invariably, local regulations governing the operation, maintenance and repair of electrical devices
apply. Special instructions relating to the device can be found in the relevant sections of the
documentation.
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 listed in this supplementary documentation is
mandatory. The symbol on the front of the Ex documentation indicates the approval and the
certification center ( 0 Europe, 2 USA, 1 Canada).
• The measuring system complies with the general safety requirements in accordance with
EN 61010-1 and the EMC requirements of IEC/EN 61326 and NAMUR Recommendations
NE 21, NE 43 and NE 53.
• 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.
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