Vega VEGABAR 66 Operating Instructions Manual page 62

10 Supplement
Material
Ʋ Housing
Ʋ Inspection window
Voltage supply
Operating voltage
Ʋ Non-Ex instrument
Ʋ Ex-ia instrument
Ʋ Exd instrument
Operating voltage with illuminated display and adjustment module
Ʋ Non-Ex instrument
Ʋ Ex-ia instrument
Ʋ Ex d instrument
Permissible residual ripple
Ʋ < 100 Hz
Ʋ 100 Hz ... 10 kHz
Load
Ω
1000
750
500
250
12 14
Fig. 34: 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 Transmitter
Ʋ Housing, standard
Ʋ Aluminium and stainless housing
(optionally available)
Ʋ External housing
Overvoltage category
Instruments with gauge pressure measuring ranges cannot detect the ambient pressure when submerged, e.g.
21)
in water. This can lead to falsification of the measured value.
Only with instruments with absolute pressure ranges.
22)
62
1
16 18 20
ABS
Polyester foil
12 ... 36 V DC
12 ... 30 V DC
18 ... 36 V DC
20 ... 36 V DC
20 ... 30 V DC
20 ... 36 V DC
U < 1 V
ss
U < 10 mV
ss
see diagram
22 24 26
IP 68 (25 bar)
IP 66/IP 67
21)
IP 68 (1 bar)
22)
IP 65
III
VEGABAR 66 • 4 ... 20 mA/HART - climate compensated
2
28 30 32 34
3
4
V
36