2 dimensions – VEGA VEGABAR 54 4 … 20 mA_HART - climate compensated User Manual
Page 57
57
10 Supplement
VEGABAR 54 • 4 … 20 mA/HART - climate compensated
36727-EN-130321
1000
750
500
250
12
18
16
14
20
22
24
26
28
30
32
34
36
Ω
V
4
1
2
3
Fig. 26: Voltage diagram
1 HART load with HART version
2 Voltage limit EEx-ia instrument
3 Voltage limit non-Ex instrument
4 Operating voltage
Electrical protective measures
Protection rating
Ʋ Housing, standard
IP 66/IP 67
16)
Ʋ Aluminium and stainless housing
(optionally available)
IP 68 (1 bar)
17)
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
10.2 Dimensions
The following dimensional drawings represent only an extract of the possible versions. Detailed
dimensional drawings can be downloaded on www.vega.com under "Downloads" and "Drawings".
The two chamber housings are not available with instruments with 4 … 20 mA signal output
16)
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.
17)
Only with instruments with absolute pressure ranges.