Camille Bauer WT707 Mode D'emploi page 26

R
ext
4-wire connection (different mA-signals)
A = Measuring output
H = DC/AC power supply
R = External resistance
ext
Fig. 8. Connection diagram for 4-wire connection,
with electric isolation, DC/AC power supply.
7.2 7.2 Connecting transmitter with
screw terminals and cable glands
In the case of transmitters fitted with screw terminals and
cable glands, there are 4 screw terminals (4.1) plus 1 ground
terminal (4.2) which are accessible after removing the cover
(3.1) (see Fig. 9). The maximum wire gauge the terminals can
accept is 1.5 mm .
2
Fig. 9. Rear (3) with terminals (4.1) and (4.2) and cable glands (4).
Left: Cover (3.1) closed.
Right: Exposed.
Remove the 3 screws (3.2) and take off the cover (3.1).
Undo the gland nut and remove the pinch ring and seal from
the gland opening. Place these parts over the cable in the
correct order and pass the end of the cable through the gland
hole into the rear of the transmitter.
Strip the insulation from a suitable length of the leads and
connect them to the terminals (4.1) and (4.2) according to
the respective wiring diagram (Fig. 10 or 11).
Then fit the gland seal, pinch ring and nut. Tighten the gland
nut and replace the cover.
26
1 6
2
5
3
+
–
4
+
–
– ~ + ~
A H
(3.2)
(3)
(4.1)
(3.1)
(4.2)
(4)
Bridge
–
R
ext R
+
+ –
A and H
2-wire connection 3-wire connection
(4...20 mA) (different mA-signals)
A = Measuring output...
... as 2-wire connection (4...20 mA, signal in
output/powering circuit)
... as 3 or 4-wire connection (different
mA-signals)
H = DC power supply H = 12...33 V
resp. H = 12...30 V with Ex version
R = External resistance
ext
Fig. 10. Connection diagrams for 2, 3 or 4-wire connection,
without electric isolation, DC power supply.
+
R
ext
–
A
4-wire connection (different mA-signals)
A = Measuring output
H = DC/AC power supply
R = External resistance
ext
Fig. 11. Connection diagram for 4-wire connection,
with electric isolation, DC/AC power supply.
+
+
R
ext
ext
–
–
+
– +
A H A
4-wire connection
(different mA-signals)
+ ~ – ~
H
–
H