12
VEGASON 51K … 53K
2
4 … 20 mA
2
2
2
4
Types and versions
Measuring system with VEGASON 51K … 53K via separator in Ex-area on
active DCS
• Two-wire technology (loop powered), supply via the signal line on the DCS; output signal
4 … 20 mA (passive)
• Separator converts the not-intrinsically safe DCS-circuit into an intrinsically safe circuit, the
sensor can therefore also be used in Ex-zone 1
• Optional external indicating instrument with analogue and digital indication (can be mounted
up to 25 m away from the sensor)
• Adjustment with PC, HART
®
-handheld or adjustment module MINICOM (can be plugged in
the sensor or in the external indicating instrument VEGADIS 50)
HART
®
-handheld
Ex-area
Not Ex-area
Separator (e.g. Stahl)
(see "3.2 Approvals“)
VEGA-
CONNECT 2
VEGADIS 50
passive
2)
1 )
DCS active
1)
If the resistors of the processing systems
connected to the 4 … 20 mA-signal output are less
than 200
W
, a resistor of 250
W
to 350
W
must be
connected to the connection line during adjust-
ment.
The digital adjustment signal would be extremely
damped or short-circuited via too small input
resistors of the connected processing system
which means that the digital communication with
the PC could no longer be ensured.
2)
4 … 20 mA passive means that the sensor takes a
current of 4 … 20 mA depending on the level. The
sensor, therefore, reacts electrically like a resistor
(consumer) on the DCS. The DCS operates
actively, i.e. as current or voltage supply.
Содержание VEGASON 51K
Страница 1: ...Level and Pressure Operating Instructions VEGASON 51K 53K ...
Страница 63: ...VEGASON 51K 53K 63 Notes ...