Intrinsic Safety

Intrinsic safety refers to a technique used to ensure that electronic equipment can function safely in environments containing explosive materials. Under volatile conditions, sparks caused by electronic equipment and signal wires can cause ignition of explosive substances. When mixed with high levels of air, ethylene oxide becomes highly volatile. Ethylene oxide can be dangerously explosive in concentrations as low as 3% by volume.

To ensure the safety of people, property and environment, remote IO consists of several panels that include standard and intrinsically safe IO modules connected to the PLC over a redundant media network. IO modules are powered from intrinsically safe power supplies. Each chamber has one IO node with its own 24 VDC power supply and communication module.