Endress+Hauser Proline Promass E 500 - Special Installation Instructions

Installation Proline Promass E 500 PROFIBUS PA
26 Endress+Hauser
A0034391
 9 Thermal insulation with exposed extended neck
Heating
NOTICE
Electronics can overheat due to elevated ambient temperature!
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Observe maximum permitted ambient temperature for the transmitter.
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Depending on the medium temperature, take the device orientation requirements into
account.
NOTICE
Danger of overheating when heating
‣
Ensure that the temperature at the lower end of the transmitter housing does not
exceed 80 °C (176 °F).
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Ensure that sufficient convection takes place at the transmitter neck.
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Ensure that a sufficiently large area of the transmitter neck remains exposed. The
uncovered part serves as a radiator and protects the electronics from overheating and
excessive cooling.
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When using in potentially explosive atmospheres, observe the information in the
device-specific Ex documentation. For detailed information on the temperature tables,
see the separate document entitled "Safety Instructions" (XA) for the device.
‣
Consider the "830 ambient temperature too high" and "832 electronics temperature too
high" process diagnostics if overheating cannot be ruled out based on a suitable system
design.
Heating options
If a fluid requires that no heat loss should occur at the sensor, users can avail of the
following heating options:
• Electrical heating, e.g. with electric band heaters
2)
• Via pipes carrying hot water or steam
• Via heating jackets
Vibrations
The high oscillation frequency of the measuring tubes ensures that the correct operation of
the measuring system is not influenced by plant vibrations.
6.1.3 Special installation instructions
Drainability
When installed vertically, the measuring tubes can be drained completely and protected
against buildup.
2) The use of parallel electric band heaters is generally recommended (bidirectional electricity flow). Particular considerations must be made if a
single-wire heating cable is to be used. For additional information, refer to EA01339D "Installation Instructions for Electrical Trace Heating
Systems ".