Turck Isolator MK33-LI

NEW TURCK MK33-LI-EX0 / 24VDC SAFETY MODULE MK33LIEX024VDC

The single channel MK33-11Ex0-Li… loop isolators are used to operate intrinsically safe 2-wire loop powered transducers in
explosion hazardous area and to transfersignals to the safe area.
The MK33-11Li-Ex0… types are single channel device with an input and output circuit of 0/4…20 mA. A green LED
indicates that the device is powered.
The input circuit is isolated from the output circuit and from the supply voltage. Input signals are passed (1:1) without attenuation
to the output located in the nonhazardous area.
۲-wire Loop Isolator MK33-11Ex0-Li/24VDC 1-channel Due to this function it is possible to connect this device to power supplying
input circuits of a PLC and to install it in such applications which previously used Zener barriers. Due to the 1:1 transmission characteristic of the loop powered transducer circuit, wire-break or short-circuit faults are shown as 0 mA or > 22 mA respectively. For applications with HART® transducers, there are loop-isolaters available which not
only transmit analogue signals but also transfer digital signals bidirectionally:
– IM33-11Ex-Hi/24VDC (page 3 – ۴۳)
– IM33-22Ex-Hi/24VDC (page 3 – ۴۵)

• ۱-channel loop isolator
• Intrinsically-safe input circuit EEx ia
• Area of application according to
ATEX: II (1) GD
• Input circuit 0/4…۲۰ mA
• Supply of 2-wire loop powered
transducers
• Galvanic isolation between
input circuit, output circuit
and supply voltage
• Defined current limitation in the
transducer circuit
• Output circuit 0/4…۲۰ mA
• Linearity ≤ ۰.۱ %
• Temperature drift ≤ ۰,۰۱ %/K of
final value
• Constant transducer voltage