VEGA VEGAWELL 72 4 … 20 mA_HART User Manual
Page 40
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1000
710
500
250
12
18
16
14
20
22
24
26
28
29
30
32
34
36
Ω
V
1
4
2
3
Fig. 15: Voltage diagram
1
HART load
2
Voltage limit Ex instrument
3
Voltage limit non-Ex instrument
Integrated overvoltage protection
N
ominal leakage current (8/20 µs)
10
kA
M
in. response time
<
25
ns
Electrical protective measures
P
rotection
-
T
ransmitter
IP
68 (25
bar)
-
H
ousing
IP
66/IP 67
O
vervoltage category
III
P
rotection class
III
Existing approvals or approvals applied for
11
)
A
pprovals
-
ATEX
ATEX II
2G EE
x ia IIC T6
-
IEC
IEC E
x ia IIC T6
-
PTB
E
x-Zone 2
-
S
hip approvals
GL, LRS, ABS, CCS, RINA, DNV
-
O
thers
WRA
11)
D
eviating data in Ex applications: see separate safety instructions.
40
VEGAWELL
72 • 4 … 20
mA/HART
10 S
upplement
27630
-EN
-080806
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