Safety Conventions - Endress+Hauser Proline Prosonic Flow 91W Brief Operating Instructions

Safety instructions
• The device must be wired as specified in the wiring and connection diagrams.
Interconnections must be permitted.
• All parts of the device must be included in the potential equalization of the system.
prevailing operating conditions, (ambient temperature range, process conditions). 
• Cables, certified cable glands and certified dummy plugs must be suitable to withstand the
Housing apertures that are not used must be sealed with certified dummy plugs.
• When hot fluids pass through the measuring tube, the surface temperature of the housing
increases. In the case of the sensor, in particular, users should expect temperatures that can
be close to the fluid temperature. If the temperature of the fluid is high, implement sufficient
measures to prevent burning or scalding.
• Hazardous areas
Measuring devices for use in hazardous areas are labeled accordingly on the nameplate.
Relevant national regulations must be observed when operating the device in hazardous areas.
The installation regulations, connection data and safety instructions provided in the 
The Ex documentation on the CD-ROM is an integral part of the entire device documentation.
Ex documentation must be observed. The symbol on the front page provides information on
the approval and certification body (
bears the documentation number of this Ex documentation (XA***D/../..).
• Endress+Hauser will be happy to assist in clarifying any questions on approvals, their
application and implementation.
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Safety conventions

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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.
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Europe, USA,
Proline Prosonic Flow 91W
1
Canada). The nameplate also
Endress+Hauser