Vaisala HMT310 - Manual (Page 28)

User's Guide _______________________________________________________________________
28 ___________________________________________________________________ M210619EN-E
See Appendix A on page 99 for the following probe installation kits for
HMT313 and installation examples:
- Duct mounting kit
- Cable gland
HMT314 for Pressurized Spaces
HMT314 probe is for humidity measurements in pressurized rooms and
industrial processes. The probe is provided with a nut, a fitting screw and
a sealing washer. Keep the fitting screw and nut in place on the body of
the probe during handling to prevent damage to the highly polished
surface of the probe. Follow the instructions below to achieve a leak-tight
assembly:
1. Remove the fitting screw from the nut and the probe.
2. Attach the fitting screw to the chamber wall with a sealing washer.
Tighten the fitting screw into the threaded sleeve with a torque
wrench. The tightening torque is 150 ± 10 Nm (110 ± 7 ft-lbs).
3. Insert the body of the probe into the fitting screw and attach the nut
manually to the fitting screw so that the connection feels tight.
0507-040
Figure 9 HMT314 Installation
The following numbers refer to Figure 9 above:
1 = Tightening cone
2 = Nut
3 = Fitting screw
4 = Sealing washer
5 = Probe; Ø 12 mm
6 = M22×1.5 or NPT 1/2"