Instrument Jb’s?

1.	Instrument Jb’s?
Answer» Instrument JB’s depending upon hazards AREA classification. JB’s ALSO can be IS or NIS. For IS signal IS JB’s used for NIS signal NIS JB’s used. For analog I/p & o/p signal we can use same JB. But for Digital I/p & o/p we have to use separate JB’s. Because digital OUTPUTS are powered signal, by wrong connection there may be chances to damage the card. For DCS I/p & o/p and PLC I/p & o/p we used separate JB’s.

Answer»

Instrument JB’s depending upon hazards AREA classification.
JB’s ALSO can be IS or NIS.
For IS signal IS JB’s used for NIS signal NIS JB’s used.
For analog I/p & o/p signal we can use same JB.
But for Digital I/p & o/p we have to use separate JB’s. Because digital OUTPUTS are powered signal, by wrong connection there may be chances to damage the card.
For DCS I/p & o/p and PLC I/p & o/p we used separate JB’s.

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