Environmental And Process Requirements - Endress+Hauser Proline Cubemass C 100 PROFIBUS DP Operating Instructions Manual

Proline Cubemass C 100 PROFIBUS DP
Endress+Hauser
6.1.2

Environmental and process requirements

Ambient temperature range
Measuring device
‣
If operating outdoors:
Avoid direct sunlight, particularly in warm climatic regions.
System pressure
It is important that cavitation does not occur, or that gases entrained in the liquids do not
outgas.
Cavitation is caused if the pressure drops below the vapor pressure:
• In liquids that have a low boiling point (e.g. hydrocarbons, solvents, liquefied gases)
• In suction lines
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Ensure the system pressure is sufficiently high to prevent cavitation and outgassing.
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)
‣
Thermal insulation with extended neck free: We recommend that you do not insulate
the extended neck in order to ensure optimum dissipation of heat.
 5 Thermal insulation with extended neck free
• –40 to +60 °C (–40 to +140 °F)
• Order code for "Test, certificate", option JM:
–50 to +60 °C (–58 to +140 °F)
Installation
A0028777
A0034391
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