VEGA VEGAPULS 45 4 … 20 mA; HART compact sensor - Manual (Page 53)

VEGAPULS 42, 44 and 45 – 4 … 20 mA 53
1000
900
800
700
670
600
500
400
300
250
200
100
0
14 20 25 30 35
15 29 36
V
Ω
975
720
25,5 19,5
Load resistance
(HART
® and
VEGACONNECT)
max. voltage limit
Ex ia sensors
max. voltage limit
non-Ex and
Ex d ia sensors
min. voltage limit when using the HART ®
adjustment resistor:
- non-Ex and Ex ia sensors
- Ex d ia sensors
N
on-E
x and
E
x ia
Exd
ia
7 Technical data
7.1 Technical data
Power supply
Power supply
- four-wire sensor 24 V DC (20 … 72 V DC)
(non-Ex and Ex d ia) 230 V AC (20 … 253 V AC), 50/60 Hz
fuse 0.315 A TR
- two-wire sensor 24 V DC (14 … 36 V DC)
- two-wire Ex ia sensor 24 V DC (14 … 29 V DC)
- two-wire Exd ia sensor 24 V DC (20 … 36 V DC)
Permissible residual ripple of the power
supply with two-wire sensors
- 0 … 125 Hz 1 V
ss
- 125 Hz … 500 Hz 1.0 … 0.01 V
ss
declining linearly
- 500 Hz … 10 kHz 0.01 V
ss
Current consumption
- four-wire sensor max. 130 mA
- two-wire sensor max. 22.5 mA
Power consumption
- four-wire sensor max. 21 W, 7.7 VA
- two-wire sensor 55 … 810 mW
Load
- four-wire sensor max. 500 Ohm
- two-wire sensor see diagram
Technical data
max. load non-Ex
max. load Ex d ia
max. load Ex ia