VEGA VEGACAL 67 For connection to a signal conditioning instrument - Manual (Page 30)

30
9 Supplement
VEGACAL 67 • For connection to a signal conditioning instrument
31761-EN-130917
1000
750
500
250
12 18 16 14 20 22 24 26 28 30 32 34 36
Ω
V
3
1
2
Fig. 15: Voltage diagram
1 Voltage limit EEx-ia instrument
2 Voltage limit non-Ex/Ex-d instrument
3 Operating voltage
Operating voltage with illuminated display and adjustment module
Ʋ Non-Ex instrument 20 … 36 V DC
Ʋ EEx-ia instrument 20 … 30 V DC
Ʋ EEx-d-ia 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
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) 3)
Ʋ Aluminium and stainless housing, in-
vestment casting (optionally available)
IP 66/IP 68 (1 bar)
Overvoltage category III
Protection class II
3) A suitable cable is the prerequisite for maintaining the protection rating.