WIKA TR serie Betriebsanleitung Seite 19

5. Commissioning, operation
5.4.5 Tightening torques for the thermometer
1) Turns from finger tight (T.F.F.T)
2) Only for versions with fabricated neck tube
Only ever screw in, or unscrew, the instrument via the spanner flats and to the
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prescribed torque using an appropriate tool.
The correct torque depends on the dimensions of the connection thread and the sealing
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used (form/material).
When screwing in or unscrewing the instrument, do not use the connection head as
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contact surface.
When screwing in the instrument, please observe that the threads are not skewed.
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WIKA operating instructions, models TRxx and TCxx
Connection head, selectable (example)
Tightening torques between connection head and neck tube
Thread
1/2 NPT
3/4 NPT
M20 x 1.5, with counter nut
M24 x 1.5, with counter nut
Tightening torques for connection to neck tube
Thread
R 1
Tightening torques for connection to thermowell
Thread
1/2 NPT
3/4 NPT
G 1/2 B
G 3/4 B
M14 x 1.5
M18 x 1.5
M20 x 1.5
M27 x 2
Tightening torques
Connection head material
Aluminium Stainless steel
T.F.F.T 2 - 3 T.F.F.T 2 - 3
1)
T.F.F.T 2 - 3 1) T.F.F.T 2 - 3
23 Nm 25 Nm
2)
27 Nm 30 Nm
2)
Tightening torques
50 ... 60 Nm
Tightening torques
T.F.F.T 2 - 3
1)
T.F.F.T 2 - 3
1)
35 Nm
40 Nm
25 ... 30 Nm
35 Nm
35 ... 40 Nm
40 ... 45 Nm
EN
1)
1)
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