Vega VEGABAR 54 Operating Instructions Manual page 72

Supplement
Ω
1000
750
500
250
12 14
Fig. 35: Voltage diagram
1 HART load
2 Voltage limit EEx ia instrument
3 Voltage limit non-Ex/Exd instrument
4 Supply voltage
Electrical protective measures
Protection
- Housing, standard
- Alu and stainless housing, optionally
available
- Transmitter in IP 68 version
- Remote housing
Overvoltage category
Protection class
Available approvals or approvals applied for
ATEX ia
ATEX ia a. d
ATEX D
IEC
FM
Ship approvals
Others
72
1
16 18 20
Instruments with gauge measuring ranges can no longer detect the ambient
18)
pressure when being submerged, e.g. in water. This can falsify the meas-
ured value.
Only with instruments with absolute pressure ranges
19)
Deviating data with Ex applications: see separate safety instructions.
20)
Depending on order specification.
21)
22 24 26
IP 66/IP 67
18)
IP 68 (1 bar)
IP 68
IP 65
III
II
20)21)
ATEX II 1G, 1/2G, 2G EEx ia IIC T6
ATEX II 1/2G, 2G EEx d ia IIC T6;
ATEX II 1/2D, 2D IP6X T
IEC Ex ia IIC T6
FM Cl.I-III, Div 1 (IS)
GL, LRS, ABS, CCS, RINA, DNV
WHG
2
28 30 32
19)
VEGABAR 54 - 4 ... 20 mA/HART
3
4
34 36 V