Rallison manufactures a wide range of cables suitable for purpose of Instrumentation. In the projects related to power generation & distribution, chemical, fertilizer, sugar Industries and various other types of engineering industries. The process instrumentation plays a vital role in measurement and control of the process.Shield is provide to prevent harmful electrostatic interface. There are three basic reasons for providing an electrostatic shield in a cable. The first important reason concerns the need to keep external electrical disturbances from affecting the signal in the cable. The second reason is to prevent the signal in the cable from being detectable at location other than at the cable ends. And the third reason is the elimination of unwanted transfer of signal between circuits in the same cable.