WIKA LSO.25 Manual De Instrucciones página 23

6. Commissioning, operation
The cable must not be shielded, however, should not be laid directly besides strong
electrical interference sources either. Including line resistance, contact resistance goes
the maximum line length and with that by the following table the maximum:
Wire cross section
in mm²
0.5
0.75
1.0
1.5
A complete resistance of 9 Ω, inclusive of contact resistances, should not be exceeded
since otherwise a failure signal is carried out.
In addition, for the explosion-protected version, a max. inductance of
L ≤ 0.5 mH and a max. capacitance of C
a
switching amplifier values).
Connection diagram transducer and switching amplifier
Ex zone 0/1
Transducer
model LSO.06
The instrument can
be connected to
earth.
For the explosion-protected version, a light-blue cable or one marked
light-blue must be installed from the switching amplifier to the transducer
(intrinsically safe circuit). The switching amplifier is located in the
non-hazardous area and the measuring body of the transducer in a Zone 1
area.
WIKA operating instructions models LSO.06, LSO.25
Wiring length
in m
175
300
400
600
Safe area
Switching amplifier model LSO.25
Signal
Wiring resistance
in Ω
6.3
7.2
7.2
7.2
≤ 3 µF must be observed (incl.
a
Failure
GB
23