Radio Astronomy Stations - Vega VEGAPULS 64 Operating Instructions Manual

11 Supplement
Operating voltage U
Ʋ Non-Ex instrument
Ʋ Ex-d instrument
Ʋ Ex ia instrument
Reverse voltage protection
Permissible residual ripple - Non-Ex, Ex-ia instrument
Ʋ for 12 V< U < 18 V
B
Ʋ for 18 V< U < 35 V
B
Load resistor
Ʋ Calculation
Ʋ Example - Non-Ex instrument with
U = 24 V DC
B
Electrical protective measures
Protection rating
Housing material
Plastic
Aluminium
Stainless steel, electro-
polished
Stainless steel, precision
casting
Protection rating (IEC 61010-1)
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:
80
- illuminated display and adjustment module
B
Version
Single chamber
Double chamber
Single chamber
Double chamber
Single chamber
Single chamber
Double chamber
18 ... 35 V DC
18 ... 35 V DC
18 ... 30 V DC
Integrated
≤ 0.7 V (16 ... 400 Hz)
eff
≤ 1.0 V (16 ... 400 Hz)
eff
(U - U )/0.022 A
B min
(24 V - 12 V)/0.022 A = 545 Ω
IP-protection class
IP 66/IP 67
IP 66/IP 67
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
IP 66/IP 68 (0.2 bar)
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
IP 66/IP 68 (0.2 bar)
IP 68 (1 bar)
III
VEGAPULS 64 • 4 ... 20 mA/HART - two-wire
NEMA protection
Type 4X
Type 4X
Type 6P
-
Type 6P
-
Type 6P
Type 6P
-
Type 6P
-