VEGA VEGABAR 54 4 … 20 mA_HART - Manual (Page 56)

56
10 Supplement
VEGABAR 54 • 4 … 20 mA/HART
36726-EN-130321
Protection rating
Ʋ unassembled IP 20
Ʋ mounted into the sensor without cover IP 40
Material
Ʋ Housing ABS
Ʋ Inspection window Polyester foil
Voltage supply
Operating voltage
Ʋ Non-Ex instrument 12 … 36 V DC
Ʋ EEx-ia instrument 12 … 30 V DC
Operating voltage with illuminated display and adjustment module
Ʋ Non-Ex instrument 20 … 36 V DC
Ʋ EEx-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
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)
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.