Vega VEGACAL 67 Operating Instructions Manual page 29

Ω
1000
750
500
250
12 14
Fig. 15: Voltage diagram
1 Voltage limit Ex-ia instrument
2 Voltage limit non-Ex
3 Operating voltage
Permissible residual ripple
Ʋ < 100 Hz
Ʋ 100 Hz ... 10 kHz
Load
Potential connections and electrical separating measures in the instrument
Electronics
Reference voltage
3)
Conductive connection
Electrical protective measures
Protection rating
Housing material
Plastic
Aluminium
Stainless steel (electro-
polished)
Stainless steel (precision
casting)
Galvanic separation between electronics and metal housing parts
3)
VEGACAL 67 • For connection to a controller
16 18 20
Version
Single chamber
Double chamber
Single chamber
Double chamber
Single chamber
Single chamber
Double chamber
22 24 26
U < 1 V
ss
U < 10 mV
ss
see diagram
Not non-floating
500 V AC
Between ground terminal and metallic process fitting
IP-protection class
IP66/IP67
IP66/IP67
IP66/IP68 (0.2 bar)
IP68 (1 bar)
IP66/IP67
IP66/IP68 (0.2 bar)
IP68 (1 bar)
IP66/IP68 (0.2 bar)
IP66/IP68 (0.2 bar)
IP68 (1 bar)
IP66/IP67
IP66/IP68 (0.2 bar)
IP68 (1 bar)
1
28 30 32
NEMA protection
Type 4X
Type 4X
Type 6P
Type 6P
Type 4X
Type 6P
Type 6P
Type 6P
Type 6P
Type 6P
Type 4X
Type 6P
Type 6P
9 Supplement
2
3
V
34 36
29