WIKA GDM-100-TI-D Betriebsanleitung Seite 15

5. Commissioning, operation
Inductive load with AC voltage
With AC voltage two protection measures are possible:
Example:
Contact protection
measure with
voltage-dependent
resistor VDR
Example: Contact
protection measure
with RC element
Capacitive load
With capacitive loads, elevated switch-on currents arise. These can be reduced by
series-connecting resistors in the supply line.
Examples: Contact protection measure with current-limiting resistor
U
B
5.3 Electrical mounting of the transmitter
Requirements for voltage supply
Power supply: DC 17 ... 30 V
Requirements for electrical connection
Use an STP cable (shielded twisted pair) with characteristics suitable for the particu-
■
lar operating conditions.
The cable diameter should not exceed 2.5 mm² in order to enable a simple fastening
■
in the cable socket.
Make sure that no moisture enters at the cable end.
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WIKA operating instructions gas density monitor, model GDM-100-TI-D
R
1
Load
Load
Load
U
B
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1
Load
15
EN