Kobold ZOK-E1, Дополнительные инструкции по эксплуатации

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ZOK-Ex
ZOK-Ex K08/0322 page 11
Note: All 3 outputs (4-20 mA, pulse and switching outputs) can be used
at the same time if a separate intrinsically safe circuit is set up for each
output signal with the aid of suitable certified safety barrier.
In addition to the wiring requirements of the ZOK-Ex operating instructions,
the appropriate local rules, regulations and guidelines for wiring practices for
intrinsically safe installations must be followed.
With regard to the cable selection and the permissible length, the associated
device capacitance and inductance parameters must not be exceeded by the
sum of the capacitances and the sum of the inductances within the loop.
When calculating the permissible cable length, use the capacitance and
inductance values of the ZOK-Ex from the Exi certificate.
Certain regions like Europe allow the inductance / resistance ratio of the cable
to be used instead of the sum of the inductances. In this case, the cable
inductance / resistance ratio must be lower than the maximum inductance /
resistance ratio permitted by the associated device.