Difference between active and passive intrisinic barrier
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A safety barrier, could be active and passive at same time. ... Furthermore, if the DCS field card is configured in active mode, providing the energy for the loop, our barrier, in their “safe area” terminals, must be passive (allowing current flow from-to DCS in same value that flows in the barrier-transmitter system).
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safety barrier are those device that word to limit the energy in the field two types of barrier ..
passive- if there is dangerous voltage coming from the safe area.the zener
barrier divert the current to the ground fuse break maintaining safe.
- active- this configuration does not allowed the the dangerous voltage that is present in the terminal block
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