34
16 Software development
Power supply
AC voltage
4 wire: 180 V … 250 V AC; 90 V … 127 V AC ; power consumption < 4 VA
DC voltage
4 wire: 18 V . ..36 V DC, power consumption < 2.5 W; 2 wire: 12 V … 36 V DC
Ripple (Smart devices)
HART max. ripple (measured at 500
Ω
) 47 Hz…125 Hz : U
PP
= 200 mV
max. noise (measured at 500
Ω
) 500 Hz…10 kHz : U
eff
= 2.2 mV
Electrical isolation
The evaluation electronics is electrically isolated from the power supply terminals with all four-
wire versions.
Software version and BA version
Modifications
Remarks
LUC-T
SW/BA
Instrument
and
software
No. V9H3
VU 260 Z
2.2/ from 08.99
7522
from 1.7
actual version
–
LUC-T
SW/BA
Instrument
and
software
No. V9H3
DXR 275
Modifications
Remarks
2.2/ from 08.99
7422
Device revision: 2
DD revision: 2
actual version
–