Instrumentation Cables are used in industry to connect monitoring equipment and sensors. They are also used in the field of telecommunication. They are used in process industries such as cement, steel, etc. 
Process industries need to monitor thousands of parameters in real-time to ensure optimum functioning of the process. These cables are designed to be flexible and easy to install. They are also to be protected against interference.
Instrumentation Cables have a conductor which is insulated. Above the insulation there is a shield.
Some instrumentation cables are shielded. The shield is enclosed in a sheath which is made of PVC or HDPE.