Fema DCM Series Assembly And Operating Instructions Manual page 43

6. Pressure monitors in intrinsically safe control circuits (EEx-i) ...513
Pressure switches which are intended for EEx-i installations are equipped with blue terminals and
cable entries.
Additional function ...513 is used together with suitable isolating switching amplifier, e.g. Ex 011.
Connection diagramm
Applies for maximum pressure
monitoring. When using for minimum
pressure monitoring, terminals 3
and 2 of pressure switch must be
connected with terminals 1 and 2
of isolating switching amplifier.
Pressure monitors with additional
function ...213 are connected as
abore mentioned to isolating
switching amplifier Ex 011.
Ex-Zone 1 or 2, 21 or 22
Ex-free Zone
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