Installation Proline Promass F 500 Modbus RS485
28 Endress+Hauser
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).
‣
Ensure that convection takes place on a sufficiently large scale at the transmitter neck.
‣
Ensure that a sufficiently large area of the housing support remains exposed. The
uncovered part serves as a radiator and protects the electronics from overheating and
excessive cooling.
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
• Via pipes carrying hot water or steam
• Via heating jackets
Using an electrical trace heating system
If heating is regulated via phase angle control or pulse packages, magnetic fields can affect
the measured values (= for values that are greater than the values permitted by the EN
standard (sine 30 A/m)).
For this reason, the sensor must be magnetically shielded: the housing can be shielded
with tin plates or electric sheets without a privileged direction (e.g. V330-35A).
The sheet must have the following properties:
• Relative magnetic permeability µr ≥ 300
• Plate thickness d ≥ 0.35 mm (d ≥ 0.014 in)
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 mounting instructions
Rupture disk
Make sure that the function and operation of the rupture disk is not impeded through the
installation of the device. The position of the rupture disk is indicated on a sticker beside it.
The transportation guard must be removed.
Information that is relevant to the process: → 197.
For information on the dimensions: see the "Mechanical construction" section of the
"Technical Information" document
The existing connecting nozzles are not intended for the purpose of rinsing or pressure
monitoring, but instead serve as the mounting location for the rupture disk.
In the event of a failure of the rupture disk, a discharge device can be screwed onto the
internal thread of the rupture disk in order to drain off any escaping medium.
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