Burkert 8041 - Page 25

25
Installation
Make sure the installation is equipotential (power supply
- 8041):
→
Connect together the various earth spots in the instal-
lation to eliminate the potential dierences that may
occur between two earthes.
→ In the housing, connect the power supply cable shield
to terminal no.4 of the electronic board connector
(Fig.14
). On a version with stainless steel ow sensor,
a second cable is coming from the sensor.
→
Connect the negative power supply terminal to the
earth to suppress the eects of common mode cur-
rents. If this connection cannot be made directly, a
100nF/50V capacitor can be connected between
the negative power supply terminal and the earth
(marked1, Fig.15).
•
If the pipes are made of metal:
→
connect to the same earth the dierent metallic
instruments (valve, pump...) located near the device
(marks2, Fig.15).
•
If the pipes are made of plastic:
→
insert the metal parts (not provided) in the plastic
pipes, upstream and downstream of the device
(marked2, Fig.15).
→
connect the metal parts to the same earth (Fig.15).
NOTICE
The device is not tight if only one or none of the cable glands
is used
▶ The device is only tight when the cable glands are either
wired or sealed. To seal a cable gland, do the following:
→ Loosen the nut of the unused cable gland.
→ Remove the transparent disk.
→ Insert the supplied blanking plug.
→ Screw the nut of the cable gland.
→ Loosen the nuts of the cable glands.
→ Insert each cable through a nut than through a cable gland.
123456
Power cable shield
Earth cable coming from the
housing
Second cable on a version
with a ow sensor holder in
stainless steel
Fig.14: Earth connection terminal
english
Type 8041