WIKA REFRACTO-PAD TC59-R Manual De Instrucciones página 13

6. Commissioning, operation
6.7 REFRACTO-PAD
Position the heat shield with the closed end approximately 12.5 mm (1/2") from the end
■
of the thermocouple.
Use 3.2 mm (1/8") fillet weld to weld the heat shield to the tube on 3 sides using one
■
continuous pass.
Figure 1: Welding details
Fillet
weld
Fillet
weld
6.8 Tube clip welding
Attach clips at predetermined locations. Preheat area before welding if required.
■
Weld tube clip ends only and ensure there is a loose fit (no friction) between the
MI cable and the clip (see figure 2).
The tube clip should allow axial expansion of the mineral-insulated cable.
■
Weld clips maximum every 300 mm (12") to 450 mm (18") of run.
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Figure 2: Tube clip welding
Fillet
weld
Fillet
weld
WIKA operating instructions model TC59-R (REFRACTO-PAD
shield welding

MI cable
)
®
EN
13