IS Wireless Application

Intrinsically Wireless Application

The basic principal of intrinsic safety for electrical devises is to protect the environment form combustion whether it is a gaseous environment such as well heads or paint booths or a combination of gas and dust such as a coal mining environment.  There are numerous methods to accomplish this task which include the use of explosion proof housings, creating a “0” volume around the electronics using materials such as potting compounds and/or electronic design principals.  In the design or our intrinsically safe wireless products it is most common to use design principals to achieve intrinsic safety such that the product remains lightweight and serviceable.  These design principals take into account the complete design and evaluate and test the potential faults that may occur ensuring that any fault is not capable or producing spark or heat sufficient to ignite the combustible environment.

The basic architecture of a wireless control system in an intrinsically safe application includes a wireless transmitter, typically handheld or belt mounted, and a receiver connected to the controlled equipment.  The transmitter is required to be evaluated for intrinsic safety; the receiver can either be housed in an explosion proof enclosure or an intrinsically safe device itself.  If the receiver is housed in an XP enclosure there are a number of considerations to make when designing the system such as isolation barriers for antenna cables and data communications as well as command signaling in and out of the XP enclosure.

Cervis maintains a level of expertise in intrinsically safe product design and application.  We have experience working with equipment manufactures and end users in the mining, grain handling, paint application and oil/gas energy extraction industries

  • Intrinsically safe equipment is designed such that it does not cause combustion in hazardous environments due to electrical or thermal energy
  • Explosion proof is equipment designed to contain an explosion not prevent it
  • I.S. equipment in the hazardous environments must carry intrinsic safety evaluation
  • Approved barriers must be in place for signals entering or exiting XP wall
  • Control devices in hazardous environment such as valve coils, relays, sensors must be intrinsically safe