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Galvanic Isolators - Introduction
 
Interfaces between field mounted devices in explosive hazardous areas and non hazardous areas are useful to prevent a transfer of ignition energy from the non hazardous area into the explosive hazardous area.
These interfaces must be able to reproduce the input signals with a minimal error ( as low as 10ľA on 20 mA) with practically no distortion at an absolute minimum of noise level and be immune to Radio Frequency in line with Euoropean CE by-laws. The CENELEC EX- Certification, EMC compatibility per NAMUR and the production unit to have a ATEX certificate are the inputs to make an interface get accepted in Euorope.
 
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