Electrical connection – VEGA VEGAPULS 54K enamel User Manual

Page 25

Advertising
background image

VEGAPULS 54K enamel

25

24 101-EN-041227

-

+

4 ... 20 mA

VEGADIS
371 Ex

2

2

2

4

EEx ia

1)

Measuring system with VEGAPULS 54K on VEGADIS 371 Ex indicating
instrument with current and relay output

• Two-wire technology (loop powered), intrinsically safe ia supply via the signal cable of the

VEGADIS 371 Ex indicating instrument for operation of the sensor in Ex zone 1

• Optional external indicating instrument with analogue and digital display (can be mounted

up to 25 m away from the sensor).

• Adjustment with PC, HART

®

handheld or adjustment module MINICOM (can be plugged into

the sensor or into the external indicating instrument VEGADIS 50).

(passive)

VEGADIS 50

0/4 … 20 mA

Relay

(see „3.2 Approvals“)

Ex area

Non Ex area

HART

®

handheld

VEGA-
CONNECT 2

1)

If the resistance of the processing systems
connected to the 4 … 20 mA signal output is less
than 200

Ω, a resistor must be connected to the

connection cable during adjustment to get a loop
resistance of 250

Ω up to 350 Ω.

The digital adjustment signal would otherwise be
severely damped or short-circuited due to
insufficient resistance of the connected process-
ing system. Digital communication with the PC
would not be ensured.

Zone 0 or
Zone 1

Electrical connection

Advertising