Commissioning, Operation; Before You Start - WIKA TEFRACTO-PAD TC59-T Manual De Instrucciones

5. Commissioning, operation

5. Commissioning, operation
WARNING!
Damage to the measuring instrument by operation outside the upper or
lower limits of the operating temperature
Failure to observe the permissible operating temperature, also taking into
account convection and radiation, can even cause damage to the thermometer
during mounting.
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The upper and lower limits of the specified operating temperature range
must not be exceeded.
WARNING!
Physical injuries and damage to property and the environment caused
by hazardous media
Upon contact with hazardous media (e.g. oxygen, acetylene, flammable or toxic
substances), harmful media (e.g. corrosive, toxic, carcinogenic, radioactive),
and also with refrigeration plants and compressors, there is a danger of
physical injuries and damage to property and the environment.
Should a failure occur, aggressive media with extremely high temperature and
under high pressure or vacuum may be present at the instrument.
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For these media, in addition to all standard regulations, the appropriate
existing codes or regulations must also be followed.
5.1 Installation scope
The following is a guide for installation of TEFRACTO-PAD
It gives guidelines and suggestions for preparation, installation and welding
TEFRACTO-PAD thermocouples. Due to the variety of applications some of the
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suggestions made here may not be appropriate. The end user must determine if these
instructions are suitable for their unique application. Contact WIKA should you have any
questions regarding the installation.

5.2 Before you start

Ensure there is enough MI cable to reach the termination box for each
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TEFRACTO-PAD
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Avoid passing MI cable through hot zones.
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Route the MI cable thermocouple in contact with the coolest side of the tube. This will
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substantially increase the life expectancy.
Ensure all surfaces to be welded are cleaned by appropriate methods.
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When grinding always use clean abrasive materials that have not been used on other
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materials.
A wire brush is not adequate to properly clean the tube.
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Test fit the TEFRACTO-PAD
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length of MI cable was provided.
Ensure all bending is correct and sufficient allowance is provided for tube movement.
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Based on the customer's weld procedure, determine the appropriate preheat, interpass
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and weld filler metal composition for the parent materials.
Determine if controlled cooling or post weld heat treatment is required.
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WIKA operating instructions model TC59-T (TEFRACTO-PAD
, especially if on-site bending and expansion loops are required.
thermocouple at the desired location to ensure adequate
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tubeskin thermocouples.
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)
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EN
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