VEGA VEGASON 61 4 … 20 mA_HART - two-wire - Manual (Page 45)

45
10 Supplement
VEGASON 61 • 4 … 20 mA/HART - two-wire
28775-EN-130417
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 14 … 36 V DC
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
750
500
250
14 18 16 20 22 24 26 28 30 32 34 36
Ω
V
4
1
2
3
Fig. 30: Voltage diagram
1 HART load
2 Voltage limit Ex-ia instrument
3 Voltage limit non-Ex instrument
4 Operating voltage
Electrical protective measures
Protection, depending on housing version
Ʋ Plastic housing IP 66/IP 67
Ʋ Aluminium housing, stainless steel
housing - investment casting, stain-
less steel housing - electro-polished
IP 66/IP 68 (0.2 bar) 9)
Ʋ Aluminium and stainless housing, in-
vestment casting (optionally available)
IP 66/IP 68 (1 bar)
9) A suitable cable is the prerequisite for maintaining the protection rating.