Installation Proline Promass I 100 Modbus RS485
20 Endress+Hauser
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 approved 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
Outlet run for peripheral device
If a pressure and temperature measuring device are installed downstream from the
measuring device, make sure there is sufficient distance between the two devices.
A0016893
PT Pressure transmitter
TT Temperature transmitter
Guarantees complete drainability
When the sensor is installed in a horizontal line, eccentric clamps can be used to ensure
complete drainability. When the system is pitched in a specific direction and at a specific
slope, gravity can be used to achieve complete drainability. The sensor must be mounted in
the correct position to ensure full drainability in the horizontal position. Markings on the
sensor show the correct mounting position to optimize drainability.
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