Burkert 8041 Manuel Utilisateur page 23

Type 8041
Installationandwiring
make sure the installation is equipotential (power supply
- 8041):
→
Connect the different earth connections of the instal-
lation to one another in order to remove any differences in
potential which may arise between the earth connections.
→
Inside the housing, connect the power cable shield to
connector terminal no. 4 on the electronic board (Fig.
13 ). On versions with a stainless steel sensor, a second
cable comes from the sensor.
→
Connect the negative power supply terminal to the earth
to remove the effects of common mode currents. If this
connection cannot be made directly, a 100 nF/50 V
capacitor can be fitted between the negative power
supply terminal and the earth (reference 1 Fig. 14 ).
• If the pipes in the installation are made of metal:
→
connect the various metal devices to the same earth
(valve, pump, etc.) located close to the transmitter (ref-
erence 2 Fig. 14 ).
• If the pipes in the installation are made of plastic:
→
insert the metal parts (not provided) inside the plastic
pipes, upstream and downstream of the transmitter (ref-
erence 2 Fig. 14 ).
→
connect these metal parts to the same earth (
Earth cable in the housing
Fig. 13 : Earth connection terminal box
2
Fig. 14 : Earthing the transmitter
Fig. 14 ).
→
Wire the 4-20 mA current output (see §
→
Wire the frequency output (see §
→
Wire the relay output (see §
→
Replace the cover on the housing as shown in
Power cable shield
1 2 3 4 5 6
Second cable for versions with
stainless steel sensor holder
Power cable shield
2
8.3.2).
8.3.3).
English
18-36 VDC
Power supply
+
-
1
8.3.1).
Fig. 15 .
21