VEGAPULS 51K … 54K
39
21750-EN-031222
Electrical connection
VEGAPULS 51K Ex … 54K Ex with pressure-tight encapsulated connection
compartment in four-wire technology (Ex d)
• Four-wire technology, supply and output signal via two separate two-wire cables for opera-
tion in Ex-Zone 1 (VEGAPULS …Ex) or Ex-Zone 0 (VEGAPULS …Ex0).
• Output signal 4 … 20 mA (active).
• Optional external indicating instrument with analogue and digital display (can be mounted
up to 25 m away from the sensor in Ex area).
• Adjustment with PC, HART
®
handheld or adjustment module MINICOM (can be plugged into
the sensor or into the external indicating instrument VEGADIS 50).
• Load max. 500
Ω
.
2
2
4
2
2
-
+
4 … 20mA
> 250
Ω
1)
If the resistance of the processing systems
connected to the 4 … 20 mA signal output is less
than 250
Ω
, a resistor must be connected to the
connection cable during adjustment to get a loop
resistance between 250
Ω
.
The digital adjustment signal would otherwise be
severely damped or short-circuited due to
insufficient resistance of the connected
processing system. Digital communication with the
PC or the HART
®
handheld would not be ensured.
VEGA-
CONNECT 2
VEGADIS 50 Ex
Ex area
active
2)
HART
®
handheld
Non Ex area
2)
4 … 20 mA active means that the sensor delivers
a level-dependent current of 4 … 20 mA (source).
The measuring signal of the sensor reacts
electrically to the processing system (e.g. display)
like a current source.
Содержание VEGAPULS 51K
Страница 1: ...Operating Instructions VEGAPULS 51K 54K 4 20 mA HART compact sensor...
Страница 41: ...VEGAPULS 51K 54K 41 21750 EN 031222 Rx VEGAMET VEGALOG Ri 250 250 Ri 250 Set up PLC PLC...
Страница 49: ...VEGAPULS 51K 54K 49 21750 EN 031222 Set up VEGALOG VEGAMET Rx...
Страница 70: ...70 VEGAPULS 51K 54K 21750 EN 031222 Supplement CE declaration of conformity...
Страница 71: ...VEGAPULS 51K 54K 71 21750 EN 031222 Supplement...