VEGA VEGAWELL 72 4 … 20 mA_HART - Manual (Page 40)

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