KROHNE OPTITEMP TRA-TCA EN - Manual (Page 24)

3
INSTALLATION
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OPTITEMP TRA/TCA
www.krohne.com 08/2010 - 4000630501 - MA OPTITEMP TRA/TCA R01 en
Other installation requirements
• A well-insulated pipeline or tank around the measuring point reduces thermal dissipation
and the distorting influence of the ambient temperature.
• To avoid measurement errors caused by poor thermal dissipation, the measuring insert must
always be in contact with the bottom of the thermowell (this is normally guaranteed by the
spring-loaded version of the measuring insert).
• Choosing the right seal for the process connection depends on the process conditions; the
manufacturer can thus only give the general recommendation that the seal must comply with
the individual requirements of the measuring point (e.g. pressure, temperature, chemically
aggressive media).
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.
WARNING!
When a seal is damaged or incorrect, the medium may leak out, causing material damage or
bodily harm! The sole responsibility of selecting the right seal lies with you, the operator.
INFORMATION!
The "sealable pressure" is the maximum pressure the process connection can seal against.
.book Page 24 Tuesday, August 17, 2010 12:18 PM