Instrumentation Cables 

1. What is the difference between IS and non IS cables?

Non IS cables are used in non-hazardous areas where protection needs no special consideration.

Cables that are safe in faulty situations, protected from external electrical or magnetic field damage and used in intrinsic circuits are referred to as intrinsically safe cables or IS cables.

2. What differs Intrinsic earthing from usual earthing?

The IS ground connection must be separated from plant earth and other electrical ground. When used in IS cables, the screens should only be grounded at one point, usually at the same point where the interface devices are grounded, and should be isolated from each other

3. What is intrinsic safety system?

A system that involves equipment and interconnecting wiring in which any spark or thermal effect in any part of the system intended for use in hazardous areas is unable to cause ignition.

4. What are Intrinsic Safety Barriers?

The safety barriers for the zener diode are voltage regulators. There are two different types of barriers, one way and two-way barriers.

There are two types of safety barriers:

Active barriers

Passive barrier