Vega VEGABAR 52 Operating Instructions Manual page 63

Ω
1000
750
500
1
250
12 14 16
Fig. 29: Voltage diagram
1
HART load
2
Voltage limit EEx-ia instrument
3
Voltage limit non-Ex/Ex-d instrument
4
Operating voltage
Electrical protective measures
Protection rating
Housing, standard
-
Aluminium and stainless housing (op-
-
tionally available)
Process component in IP 68 version
-
External housing
-
Overvoltage category
Protection class
Functional safety (SIL)
Functional safety is already activated on instruments with SIL qualification ex factory. On
instruments without SIL qualification ex factory, the functional safety must be activated by the user
via the indicating and adjustment module or via PACTware for applications according to SIL.
Functional safety according to IEC 61508-4
Single channel architecture (1oo1D)
-
double channel diversitary redundant
-
architecture (1oo2D)
You can find detailed information in the supplied Safety Manual of the instrument series or under
"www.vega.com", "Downloads", "Approvals".
VEGABAR 52 • 4 ... 20 mA/HART
18 20 22
Instruments with gauge pressure measuring ranges cannot detect the am-
18)
bient pressure when submerged, e.g. in water. This can lead to falsification
of the measured value.
Only with instruments with absolute pressure ranges.
19)
24 26 28
IP 66/IP 67
18)
IP 68 (1 bar)
19)
IP 68 (25 bar)
IP 65
III
II
up to SIL2
up to SIL3
10 Supplement
2
30 32 34
3
4
V
36
63