ProMinent DULCOMETER - Page 48

Switch the controller to measurement with
potential equalisation
NOTICE!
Wire jumper with connected potential
equalisation
A measurement with a wire jumper
and connected potential equalisation
delivers incorrect measured values.
Please note the following differ‐
ences:
The controller is factory-preset for
measurements without potential
equalisation (unsymmetrical measure‐
ment).
When measuring with potential equal‐
isation (symmetrical measurement),
the setting in the [Measurement]
menu has to be changed accordingly.
With a symmetrical connection,
remove the wire jumper and connect
the potential equalisation conductor
(PA) to the terminal XE3_2 (channel
1) or XE7_2 (channel 2) of the con‐
troller.
1. In the [Measurement] channel 1 or
2 menu change the entry under
[Potential equalisation] to [Yes]
2. Open the controller and remove the
wire jumper
n Terminal XE3_1, XE3_2 for
channel 1
n Terminal XE7_1, XE7_2 for
channel 2
Sensor connection without potential
equalisation
The sensor is connected to the controller,
as marked on the terminal diagram. Do
not remove the wire jumper in the con‐
troller.
Sensor connection with potential equalisa‐
tion
NOTICE!
Error sources when measuring with
potential equalisation
A measurement without a wire jumper
and/or unconnected potential equali‐
sation delivers incorrect measured
values.
With a symmetrical connection, con‐
nect the line for potential equalisation
to terminal XE3_2 (channel 1) or
XE7_2 (channel 2) in the controller.
Before doing so, remove the respec‐
tive wire jumper from these terminals.
Assembly and installation
48