Endress+Hauser Dosimass IO-Link Operating Instructions Manual page 20

Mounting
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 ".
20
For this reason, the following mounting locations are recommended:
• At the lowest point in a vertical pipe
• Downstream from pumps (no danger of vacuum)
Thermal insulation
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!
‣
Recommended orientation: horizontal orientation, transmitter housing pointing
downwards.
‣
Do not insulate the transmitter housing .
‣
Maximum permissible temperature at the lower end of the transmitter housing:
80 °C (176 °F)
‣
Regarding thermal insulation with an exposed extended neck: We advise against
insulating the extended neck to ensure optimal heat dissipation.
 8 Thermal insulation with exposed extended neck
Heating
NOTICE
Electronics can overheat due to elevated ambient temperature!
‣
Observe maximum permitted ambient temperature for the transmitter.
‣
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).
‣
Ensure that sufficient convection takes place at the transmitter neck.
‣
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.
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
Dosimass IO-Link
2)
Endress+Hauser
A0034391