38477BA2B
2 – 200 25.5.09
3 Electrical Installation Volume 2
Storage temperature see chapter 1.5
Fuses Fuses for power supply 24 VAC/DC and 230 VAC:
2 ea. 1.25A breaking capacity 1500A Type Littelfuse
Berthold ID no. 46719
Littelfuse order number: 215 1.25
Fuses for isolating repeater:
Explosion hazard!
If this fuse fails, the complete Uni-Probe has to be returned to the
manufacturer for inspection, since the intrinsic safety is no longer
ensured. Replacement of the fuse by the operator is not permitted.
Current output
Cable wires Wire 1 (+)
Wire 2 (-)
Wire 3 (S) Screen
Properties Intrinsically safe HART
®
current output:
4–20mA current output with HART
®
interface
for result output and parameter setting. This
current output is used for the continuous trans-
fer of the level measured value and for display
of the error status via the adjustable fault cur-
rent:
– 4–20mA for current measured value.
– Adjustable fault current from 3.5 to 24mA
in case of error.
Output current adjusted via software.
The current output can be operated in the Sink
mode (Version LB 49x-11) or in the Source
mode (Version LB 49x-22/33).
Power supply in the
Sink mode
(only LB 49x-11)
12 to 30V
Voltage drop <3.5 V
Permissible impedance
range in the Source
Mode
(only LB 49x-22/33)
120 … 500Ohm
Cables 20m bus cable, blue, pre-assembled 1x2xAWG
18/1 screened; ID no. 46413
Cable gland for the
intrinsically safe current
signal cable
Ex d approved cable gland ID no. 39975, brass
nickel-plated
Cable adapter Ex d approved adapter ¾" NPT outside,
M16x1.5 inside, ID no. 39973, brass
nickel-plated
To Next Page
