12
WIKA Operating instructions/Betriebsanleitung, WU-2X
11553678.05 EN/DE 02/2019
Current output
(2-wire)
4 ... 20 mA:
R
A
≤
(U+ – 10 V) / 0,02 A
Voltage output
(3-wire)
0 ... 5 V:
R
A
> 5 kOhm
0 ... 10 V:
R
A
> 10 kOhm
with RA in Ohm and U+ in Volt
Current for external display- or evaluation equipment can be supplied directly from the circuit, when operating
a transducer with current output. A voltage drop specific to the display unit is to be considered. The transduc
-
ers are short-circuit-proof for a short time, but anyhow any incorrect connection of the instrument should be
avoided.
WARNING!
■
For equipment with Ex nA ic certification, or if operated under nA ic conditions: Do not
separate when energized.
■
For products with FM Approval: The connection between cable and connector shall
withstand a tensile force of min. 15 N
The transducer is designed to operate with an input voltage of DC 10 ... 30 V / DC 14 ... 30 V with output
signal 0 ... 10 V. The voltage value Ui = DC 30 V shall not be exceeded in the current loop circuit. The inter
-
relationship between voltage supply and load resistor (RA) is illustrated by the following diagram.
Signal output and allowed load
4 ... 20 mA, 2-wire
7. Starting, operation
EN
permitted range
