VEGA VEGABAR 51 4 … 20 mA - Manual (Page 49)

49
10 Supplement
VEGABAR 51 • 4 … 20 mA
36712-EN-130321
Ʋ Ex-ia instrument 14 … 30 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
Permissible residual ripple
Ʋ < 100 Hz U
ss
< 1 V
Ʋ 100 Hz … 10 kHz U
ss
< 10 mV
Load see diagram
1000
727
500
250
18 16 14 20 22 24 26 28 30 32 34 36
Ω
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 15)
Ʋ Aluminium and stainless housing
(optionally available)
IP 68 (1 bar) 16)
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
Approvals
Instruments with approvals can have different technical data depending on the version.
For that reason the associated approval documents of these instruments have to be carefully
noted. They are part of the delivery or can be downloaded under www.vega.com via "VEGA Tools"
and "serial number search" as well as via "Downloads" and "Approvals".
10.2 Dimensions
The following dimensional drawings represent only an extract of the possible versions. Detailed
15) 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.
16) Only with instruments with absolute pressure ranges.