VEGA VEGASON 61 4 … 20 mA_HART - two-wire User 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.