Industrial Displays for Hazardous Areas
What is a Class I, Div. 1 industrial display? It’s a common question asked to our technical support experts. Another variation: What choices do I have for HMI visualization and machine control in a Division 1 area? One key element in answering this question correctly is to know if this is just a monitor or if there's a need for PC computing power.
There a few simple ways to get the desired monitor or HMI interface into the hazardous area. The most cost-effective solution is a small purged enclosure and a hazardous-rated LCD monitor. If a touchscreen is required, then it would also require an intrinsically safe touchscreen.
To explain in a bit more detail, a Class I, Div. 1 industrial display is defined as a visualization solution intended for use in hazardous "classified" locations. Class I, Div. 1 industrial displays can be used for monitoring processes in hazardous locations. This could be just a monitor with a DVI or VGA connection to a PC or server in a safe area, or a stand-alone panel PC or Ethernet monitor operating in the hazardous location.
Since a Division 1 location contains ignition-capable levels of gas-air mixtures on a regular basis, an industrial display intended for these areas must be protected by a suitable protection method.