Vega D98 Pressure transmitter Bedienungsanleitung PDF herunterladen (Seite 8)

8 Pressure transmitter D98

Electrical connection

4 Electrical connection

4.1 Connection instructions

The electronics in the pressure transmitter

requires a supply voltage of 12 … 36 V DC.

The electronics is designed in two-wire tech-

nology i.e. supply voltage (DC) and measur-

ing signal are led via the same two-wire

connection cable to the terminals. The supply

voltage is provided by an external power

supply unit.

Please note that the external power supply

according to DIN VDE 0106, part 101 must

be reliably separated from the mains circuits.

Note the following instructions for electrical

connection:

- Connection must be made according to

country-specific installation standards (e.g.

in Germany acc. to the VDE regulations).

- The terminal voltage should not exceed 36

V to avoid damage to the electronics.

- The electrical connection is provided with

polarity reversal.

- The wiring between pressure transmitter

and power supply can be carried out with

standard two-core cable.

- Screened cable is recommended in case

of strong electromagnetic interference.

Install the screening on one side of the

sensor.

- In case of overvoltage, we recommend

using a pressure transmitter with inte-

grated overvoltage protection or installing

VEGA overvoltage arresters.

- A seal must be used which correctly fits

the cable in the cable entry.

Connection cable

Please make sure that the connection cables

are specified for the anticipated operating

temperatures in your plant. The cable must

have an outer diameter of 5 ... 9 mm, other-

wise the sealing effect of the cable entry

cannot be guaranteed.

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