KROHNE OPTITEMP TRA-TCA Plus EN - Manual (Page 20)

2
DEVICE DESCRIPTION
20
OPTITEMP TRA/TCA PLUS
www.krohne.com 01/2012 - 4000630301 - MA OPTITEMP TRA/TCA Plus R01
2.3.3 Flange thermometer
All of the flange thermometers for advanced requirements available from the manufacturer
feature a separate neck tube to thermally decouple the process connection and connection head.
They are typically used in the mid and upper temperature range in industrial applications (up
to +600°C / +1112°F).
Flange thermometers for advanced requirements are predominantly suited to measuring the
temperature in the chemical and petrochemical industries (particularly for pipelines, tanks and
reactors). This area of application opens up because optional coating of the surface is possible.
According to the requirements for chemical resistance, the manufacturer can coat the flange
thermometer with Teflon, PTFE or a customer-specific material.
When it comes to flanges, you can choose between DIN and ASME flanges. The surface
roughness of the flange raised face is R
z
= 12.5...50 μm (DIN EN flanges) or
R
a
= 3.2...6.3 μm (ASME flanges).
As with the threaded thermometers for advanced requirements, the flange thermometers for
advanced requirements also give you the choice between different thermowell forms which are
similar to or comply with valid DIN and ASME standards. Also included are a straight
thermowell, a conical thermowell and a reduced thermowell.
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