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C HAPTER 3 _______________________________________________________________ INSTALLATION
NOTE Take care not to damage the pipe of the probe. If the pipe is damaged, the probe head is less tight and it will not go through the clasp nut.
Mounting; overview
fitting body hex = 24mm tapered thread
R1/2 ISO 7/1 parallel thread
G1/2 ISO 228/1
(BS 2779, JIS B0202)
ø19mm drilling
>10.5mm
>40mm sealing with:
1. LOCTITE® No 542 + activ. No 7649 (t=-55...+150 °C)
2. MEGA-PIPE EXTRA No 7188 (t=-55...+170 °C)
3. PTFE tape (t=-60...+210 °C) NOTE: the tape does not lock
Process or pipe wall the parts together. Therefore, use two fork spanners (hex 24 and
27 mm) for tightening and opening the clasp nut of the probe
F IGURE 3-3 Sealing and thread cutting for the fitting body.
The fitting body can be installed e.g. on standard pipe fittings (G 1/2
ISO 228/1) or on a thread in the process wall. If the wall thickness is less than 10.5 mm, it is recommended to use a welded sleeve (see
F IGURE 3-3 ). Note that the minimum recommended distance of the fitting body and probe head is 40 mm (see F IGURE 3-3 ).
Adjust the probe to a suitable distance according to the type of installation, and tighten the clasp nut first manually. Then, mark the fitting body and the clasp nut and tighten the nut a further 50...60
° with a fork spanner (see F IGURE 3-4 ).
a pen clasp nut fitting body
F IGURE 3-4 Tightening the clasp nut.
60° max.
V AISALA __________________________________________________________________________ 9
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