80
11 Supplement
VEGAPULS 64 • 4 … 20 mA/HART - two-wire
51141-EN-160815
Operating voltage U
B
- illuminated display and adjustment module
Ʋ Non-Ex instrument
18 … 35 V DC
Ʋ Ex-d instrument
18 … 35 V DC
Ʋ Ex ia instrument
18 … 30 V DC
Reverse voltage protection
Integrated
Permissible residual ripple - Non-Ex, Ex-ia instrument
Ʋ for 12 V< U
B
< 18 V
≤ 0.7 V
eff
(16 … 400 Hz)
Ʋ for 18 V< U
B
< 35 V
≤ 1.0 V
eff
(16 … 400 Hz)
Load resistor
Ʋ Calculation
(U
B
- U
min
)/0.022 A
Ʋ Example - Non-Ex instrument with
U
B
= 24 V DC
(24 V - 12 V)/0.022 A = 545 Ω
Electrical protective measures
Protection rating
Housing material
Version
IP-protection class
NEMA protection
Plastic
Single chamber
IP 66/IP 67
Type 4X
Double chamber
IP 66/IP 67
Type 4X
Aluminium
Single chamber
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
Type 6P
-
Double chamber
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
Type 6P
-
Stainless steel, electro-
polished
Single chamber
IP 66/IP 68 (0.2 bar)
Type 6P
Stainless steel, precision
casting
Single chamber
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
Type 6P
-
Double chamber
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
Type 6P
-
Protection rating (IEC 61010-1)
III
Approvals
Instruments with approvals can have different technical specifications 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, "
VEGA Tools
"
and "
Instrument search
" as well as in the download area.
11.2 Radio astronomy stations
Certain restrictions on the use of VEGAPULS 64 outside closed vessels result from the radio
license. You can find these restrictions in chapter "
Radio license for Europe
". Some of these restric-
tions have to do radio astronomy stations. The following table states the geographic positions of
radio astronomy stations in Europe: