Chapter 3 _______________________________________________________________ Installation
VAISALA_______________________________________________________________________ 31
The following two fitting body options are available:
- Fitting Body ISO1/2 solid structure
- Fitting Body NPT1/2 solid structure
0507-025
Figure 14 Sealing of Fitting Body into Process
Tightening the Clasp Nut
1. Adjust the probe to a suitable depth according to the type of
installation.
2. Tighten the clasp nut first manually.
3. Mark the fitting screw and the clasp nut.
4. Tighten the nut a further 50 ... 60° (ca. 1/6 turn) with a fork spanner.
If you have a suitable torque spanner, tighten the nut to 45 ± 5 Nm (33
± 4 ft-lbs).
Table 4 HMP368 Probe Dimensions
Probe Type Probe Length Adjustment Range
Standard 178 mm 120 mm
Optional 400 mm 340 mm
CAUTION
Take care not to damage the probe body. A damaged body makes the
probe head less tight and may prevent it from going through the clasp nut.
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