Power Supply, 4 - WIKA T15 Serie Betriebsanleitung

5. Commissioning, operation
5.3.1 Power supply, 4 ... 20 mA current loop
The model T15 is a 2-wire, powered temperature transmitter. Depending on the version, it
can be supplied with various types of power supply.
With flexible leads we recommend the use of crimped connector sleeves.
The integrated reverse polarity protection (wrong polarity on the terminals ⊕ and ⊖)
prevents the transmitter from being damaged.
Maximum values
Model T15.x-ZZ: DC 35 V
■
Model T15.x-AI:
■
Model T15.x-AC: DC 30 V
■
Model T15.x-AN: DC 35 V
■
Model T15.x-AE: DC 35 V
■
Minimum terminal voltage
DC 8 V
The load must not be too high, as otherwise, in the case of relatively high currents, the
terminal voltage at the transmitter will be too low.
Maximum permissible load depending on the supply voltage
Load diagram
Min. voltage
WIKA operating instructions model T15
DC 30 V
Operating
voltage
Voltage U in V
B
Ex instru- Non-Ex
ments instruments
EN
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