VEGA VEGABAR 55 4 … 20 mA_HART - climate compensated - Manual (Page 58)

58
10 Supplement
VEGABAR 55 • 4 … 20 mA/HART - climate compensated
39441-EN-130321
Display and adjustment module
Voltage supply and data transmission
through the sensor
Indication LC display in dot matrix
Adjustment elements 4 keys
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 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 Ex d 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
Ω
V
4
1
2
3
Fig. 29: Voltage diagram
1 HART load
2 Voltage limit Ex-ia instrument
3 Voltage limit non-Ex/Ex-d instrument
4 Operating voltage