Thermal Insulation; Heating; Vibrations - Endress+Hauser Proline Promass E 100 Manual

Thermal insulation

Heating

Vibrations

54
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In the case of some fluids, it is important to keep the heat radiated from the sensor to the
transmitter to a low level. A wide range of materials can be used for the required insulation.
NOTICE
Electronics overheating on account of thermal insulation!
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Recommended orientation: horizontal orientation, transmitter housing pointing downwards.
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Do not insulate the transmitter housing .
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Maximum permissible temperature at the lower end of the transmitter housing: 80 °C (176 °F)
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Thermal insulation with extended neck free: the insulation is omitted around the extended neck.
We recommend that you do not insulate the extended neck in order to ensure optimum
dissipation of heat.
 34 Thermal insulation with extended neck free
Some fluids require suitable measures to avoid loss of heat at the sensor.
Heating options
• Electrical heating, e.g. with electric band heaters
• Via pipes carrying hot water or steam
• Via heating jackets
Heating jackets for the sensors can be ordered as accessories from Endress+Hauser .→  87
NOTICE
Danger of overheating when heating
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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 convection takes place on a sufficiently large scale at the transmitter neck.
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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.
The high oscillation frequency of the measuring tubes ensures that the correct operation of the
measuring system is not influenced by plant vibrations.
Proline Promass E 100
A0028777
A0034391
Endress+Hauser