WIKA TC82-F, Дополнительная информация

Страница: 8 / 60

EN
14302226.02 10/2020 EN/DE/FR/ES
WIKA additional information TC82, TC83, flameproof enclosure (Ex d) 8
3. Commissioning, operation
3.2 Tightening torques
Connection head, selectable (example)
Thread Tightening torques in Nm
Connection head material
Aluminium
Stainless steel
1/2 NPT T.F.F.T 2 - 3 1) T.F.F.T 2 - 3 1)
3/4 NPT T.F.F.T 2 - 3 1) T.F.F.T 2 - 3 1)
M20 x 1.5 with counter nut 23 25
M24 x 1.5 with counter nut 27 30
Thread Tightening torques in Nm
Connection head material
Aluminium
Stainless steel
1/4 NPT T.F.F.T 2 - 3 1) T.F.F.T 2 - 3 1)
Tightening torques between connection head and neck tube
Tightening torques between purge connection and purge piping
■
Only ever screw in, or unscrew, the instrument via the spanner flats and to the
prescribed torque using an appropriate tool.
■
The correct torque depends on the dimensions of the connection thread and the sealing
used (form/material).
■
When screwing in or unscrewing the instrument, do not use the connection head as
contact surface.
■
When screwing in the instrument, please observe that the threads are not skewed.
■
Assure that the purge gas connection is tighten and no gas can escape, so that there is
no carry-through between zones.
1) Turns from finger tight (T.F.F.T)