Electrical Connection - WIKA DIH10-Ex Mode D'emploi

5. Commissioning, operation
The display is only ever operated in a 4 ... 20 mA current loop. A direct
connection to a voltage supply (e.g. DC 24 V) will lead to the display
being damaged and will invalidate the warranty.
EN
For a functional check, the display must be powered from a mA source
(e.g. mA transmitter or calibrator).
In normal operation, the display is connected in series with a 4 ... 20 mA
transmitter or connected to the 4 ... 20 mA analogue output of an
instrument.

5.2 Electrical connection

Power
supply
unit
The 4-pin plug-in terminal strip for the connection of the current loop display is located
on the rear of the display and is accessible once the case is open.
Terminal 1: Positive terminal of the current loop
Terminal 2: Negative terminal of the current loop
Terminals 3 and 4 are connected together on the PCB and enable the convenient
connection of a transmitter built into the connection head.
+ -
16
Coupler connector
Internal bridge
1 2 3
+ -
+
-
+ - + -
4 ... 20 mA
4
-
Trans-
mitter
+
WIKA operating instructions model DIH10-Ex