Proline Prowirl 73 Safety instructions
Endress+Hauser 11
1 Safety instructions
1.1 Designated use
The measuring system is used to measure the flow of saturated steam, superheated steam, gases and
liquids. The system primarily measures the measured variables volume flow and temperature. With
these values, the device can use preprogrammed data on the density and enthalpy to calculate and
output the mass flow and heat flow for example.
In the event of incorrect use or use other than that designated, the operational safety of the
measuring devices can be suspended. The manufacturer accepts no liability for damage arising as a
result.
1.2 Installation, commissioning and operation
Note the following points:
• Assembly, 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.
• In the case of special fluids (incl. fluids for cleaning), Endress+Hauser will be happy to assist in
clarifying the corrosion resistance properties of wetted materials. However, small changes in
temperature, concentration or the degree of contamination in the process can result in changes
to the corrosion resistance properties. Unsuitable material can lead to leakage of corrosive process
media and injure personnel and/or cause damage in the plant. Therefore, Endress+Hauser cannot
guarantee or accept liability for the corrosion resistance properties of wetted materials in a specific
application. The user is responsible for choosing suitable wetted materials in the process.
• 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.
• Always observe the regulations applicable in your country governing the operation, maintenance
and repair of electrical devices. Special instructions relating to the device can be found in the
relevant sections of this 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 stated 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.
• For measuring systems used in SIL 1 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.
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