KROHNE OPTITEMP TRA-TCA Plus EN - Manual (Page 29)

INSTALLATION
3
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OPTITEMP TRA/TCA PLUS
www.krohne.com 01/2012 - 4000630301 - MA OPTITEMP TRA/TCA Plus R01
3.5 Load limits
The load limits of industrial thermometers depend on several factors:
• Dimensions and design of the thermowell (especially the insertion length and diameter)
• Thermowell material
• Mechanical conditions the thermowell is subject to due to the measured medium (pressure,
temperature, flow velocity, viscosity, density)
• Sealable pressure of the process connection
• Vibration load
The sheer number of factors at play illustrates the difficulty in making universally valid
statements about the load limits. The diagrams in the next subsection serve as an initial
assessment.
3.5.1 Typical load types
INFORMATION!
The "sealable pressure" is the maximum pressure the process connection can seal against.
DANGER!
To prevent destruction or damage, never operate the thermometer outside of its permissible
mechanical, thermal or chemical limits. For further information refer to the rest of this section
and the "Technical data" section.
DANGER!
The information in this subsection is informative only and does not reflect the vibration load
caused by flow-induced eddy shedding and the resulting vibration. If necessary, prior to
purchasing and installing an industrial thermometerfor advanced requirements, have a specific
strength calculation performed (e. g. as per DITTRICH or MURDOCK, ASME PTC 19,3TW-2010).
For further information contact the manufacturer.
INFORMATION!
The manufacturer can provide an optional strength calculation for a fee.
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