Vaisala HMT140 - Manual (Page 25)

Mounting
M21488EN-C 17
The following numbers refer to Figure 4:
1 Probe (HMP110)
2 Duct installation kit
3 Probe cable
To assemble the probe:
1
Pass the probe cable through the plastic pipe of the duct
installation kit.
2 Connect the probe cable to the HMP110.
Figure 5: Drilling Instructions
The following numbers refer to Figure 5:
1 Mounting screw
2 Tension screw
3 HMP110 assembled in duct installation kit plastic pipe
To attach the probe assembly to the duct:
1
Drill the holes for the duct installation kit as follows:
• Use a 24-mm drill bit to drill a hole in the wall.
• Use a 3.2-mm drill bit to make four holes for the
installation screws (four ST4.2×16-C-Z DIN 7981
screws). The holes should be arranged in a square
around the 24 mm hole, at a distance of 42 mm from
each other.
2 Mount the probe holder using the screws.
3 Adjust the depth of the plastic pipe and tighten the screw
to lock the probe in place.
42
1
2
3
Ш24
Ш3.
2