Velleman projects K3502 Assembly instructions - Manual (Page 10)

10
Install the print behind the bores using spacing sleeves,
so that the sensors are facing the bores properly without
touching the housing.
B) With the sensors in horizontal position (fig. 2):
In this case the sensors are simply mounted on the print.
Now realise the gaps in the housing as shown on the drawing 4.0
Install the print behind the bores using spacing sleeves, so that the sensors are
facing the bores properly without touching the housing.
REMARK: Cover the bores at the inside of the housing with a piece of very fine wire gauze (see fig.3). (if
the meshes of the wire gauze are to wide to prevent penetration of splash-water, the gauze should be
doubled up two or four times before fixing it to the bores). The sensors should be positioned properly
AGAINST the wire gauze which has been placed behind the bores.
Make a small hole in the bottom of the housing in order to enable the evacuation of the water that
eventually has infiltrated.
Installation
Fig. 1
Fig. 2