Control Systems Engineers offers Positive Pressurization Control Panel. Control Systems Engineers is an ISO 9001: 2000 certified company supplying a wide range of instrumentation products, junction box and electrical control panels. The Positive Pressurization Control Panel is applied by purging at the Inert Gas [Nitrogen] and is kept at positive pressure continuously by means of adjustment of the flow rates. The Positive Pressurization Control Panel is provided with pressure monitoring system to cut off the power in case of loss of purge.