16
VEGAPULS 56K
4
4 ... 20 mA
2
2
2
2
1)
Measuring system with VEGAPULS 56K Ex, 56K Ex 0 with pressure-tight
encapsulated connection box on active DCS
• Two-wire technology, supply via the signal line from active DCS to Exd-terminal box for opera-
tion in Ex-zone 1 (VEGAPULS 56K Ex) or Ex-zone 0 (VEGAPULS 56K Ex 0)
• Output signal 4␣ …␣ 20␣ mA (passive)
• Measured value indication integrated in the sensor
• Optionally external indicating instrument (can be mounted up to 25␣ m separated from the
sensor Ex-area)
• Adjustment with PC, HART
®
-handheld or adjustment module MINICOM (can be plugged into
the sensor or into the external indicating instrument)
HART
®
-
handheld
VEGA-
CONNECT 2
Types and versions
1)
If the resistors of the processing
systems connected to the
4␣ …␣ 20 mA-signal output are less
than 200
Ω
, a resistor of 250
Ω
to
350
Ω
must be connected to the
connection line during adjust-
ment.
Otherwise the digital adjustment
signal would be extremely
damped or short-circuited via too
small input resistors of a
connected processing system so
that the digital communication
with the PC would no more be
ensured.
2)
4␣ …␣ 20␣ mA passive means that
the sensor takes level dependent
a current in the range of
4␣ …␣ 20␣ mA. The sensor reacts
then electrically like a consumer
on the DCS.
VEGADIS 50 Ex
passive
2)
EEx d ia
Ex-area
Not Ex-area
DCS
EEx e
