VEGA VEGAPULS 66 (≥ 2.0.0 - ≥ 4.0.0) standpipe ver. 4 … 20 mA_HART - two-wire - Manual (Page 53)

53
11 Supplement
VEGAPULS 66 standpipe version • 4 … 20 mA/HART - two-wire
36523-EN-121011
Load see diagram
1200
927
500
750
250
12 18 16 9,6 14 20 15,1 22 24 26 28 30 32 34 36
Ω
V
1
4
2
3
Fig. 29: Voltage diagram
1 HART load
2 Voltage limit Ex-ia instrument
3 Voltage limit non-Ex/Ex-d instrument
4 Operating voltage
Electrical protective measures
Protection, depending on housing version
Ʋ Plastic housing IP 66/IP 67
Ʋ Aluminium housing, stainless steel
housing - investment casting, stain-
less steel housing - electro-polished
IP 66/IP 68 (0.2 bar) 5)
Ʋ Aluminium and stainless housing, in-
vestment casting (optionally available)
IP 66/IP 68 (1 bar)
Overvoltage category III
Protection class III
Approvals
Instruments with approvals can have different technical data depending on the version.
For that reason the associated approval documents of these instruments must be carefully noted.
They are part of the delivery or can be downloaded under www.vega.com and "VEGA Tools" as
well as under "Downloads" and "Approvals".
11.2 Dimensions
The following dimensional drawings represent only an extract of all possible versions. Detailed
dimensional drawings can be downloaded at www.vega.com/downloads under "Drawings".
5) The prerequisites for maintaining the protection rating are a suitable cable as well as correct mounting.