VEGA VEGADIF 65 4 … 20 mA_HART - Manual (Page 86)

86
11 Supplement
VEGADIF 65 • 4 … 20 mA/HART
36128-EN-130417
Load see diagram
1000
750
500
250
12 18 16 14 20 22 24 26 28 30 32 34 36
Ω
V
4
1
2
3
Fig. 61: 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 rating
Ʋ Housing, standard IP 66/IP 67
Ʋ Aluminium and stainless housing
(optionally available)
IP 68 (1 bar)
Ʋ Process component in IP 68 version IP 68 (25 bar)
Ʋ External housing IP 65
Overvoltage category III
Protection class II
Approvals
Instruments with approvals can have different technical data depending on the version.
For that reason the associated approval documents of these instruments have to be carefully
noted. They are part of the delivery or can be downloaded under www.vega.com via "VEGA Tools"
and "serial number search" as well as via "Downloads" and "Approvals".