Drilling instructions for duct installation kit – Vaisala HMP110 User Manual
Page 26
User's Guide ______________________________________________________________________
24 __________________________________________________________________ M211060EN-E
Drilling Instructions for Duct Installation Kit
0505-178
Figure 19
Drilling Instructions
The following numbers refer to Figure 19 above:
1
=
Mounting screw
2
=
Tension screw
3
=
Probe assembled in duct installation kit plastic pipe
Drill the holes for the duct installation kit as follows:
1.
Use a 24-mm drill bit to drill a hole to the duct wall for the
humidity probe.
2.
Drill holes for the duct installation kit mounting screws around the
hole in a square arrangement, 42 mm apart from each other. Use a
3.2-mm drill bit to drill the holes for the mounting screws
(four ST4.2×16-C-Z DIN 7981 screws).
42
1
2
3
Ш24
Ш3.2