
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
Table 4 HMT318 Probe Dimensions
0507-025
Figure 12 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 - 60º (ca. 1/6 turn) with a wrench. If
you have suitable torque wrench, tighten the nut to max 45 ± 5 Nm
(33 ± 4 ft-lbs).
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