VEGA VEGABAR 52 4 … 20 mA User Manual
Page 49
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49
10 Supplement
VEGABAR 52 • 4 … 20 mA
36716-EN-130321
Ʋ Non-Ex instrument
12 … 36 V DC
Ʋ Ex-ia instrument
12 … 30 V DC
Ʋ Exd instrument
18 … 36 V DC
Operating voltage with illuminated display and adjustment module
Ʋ Non-Ex instrument
20 … 36 V DC
Ʋ Ex-ia instrument
20 … 30 V DC
Ʋ Exd instrument
20 … 36 V DC
Permissible residual ripple
Ʋ < 100 Hz
U
ss
< 1 V
Ʋ 100 Hz … 10 kHz
U
ss
< 10 mV
Load
see diagram
1000
750
500
250
12
18
16
14
20
22
24
26
28
30
32
34
36
V
3
1
2
Fig. 20: Voltage diagram
1 Voltage limit Ex-ia instrument
2 Voltage limit non-Ex/Ex-d instrument
3 Operating voltage
Electrical protective measures
Protection rating
Ʋ Housing, standard
IP 66/IP 67
14)
Ʋ Aluminium and stainless housing
(optionally available)
IP 68 (1 bar)
15)
Ʋ Process component in IP 68 version IP 68 (25 bar)
Ʋ External housing
IP 65, IP 66/IP 68 (0.2 bar)
Overvoltage category
III
Protection class
II
Functional safety (SIL)
Functional safety is already activated on instruments with SIL qualification ex factory. On instru-
ments without SIL qualification ex factory, the functional safety must be activated by the user via
the display and adjustment module or via PACTware for applications according to SIL.
14)
Instruments with gauge pressure measuring ranges cannot detect the ambient pressure when submerged, e.g.
in water. This can lead to falsification of the measured value.
15)
Only with instruments with absolute pressure ranges.