A Closed Loop Sampling System is an advanced sampling solution designed to safely extract, analyze, and return process fluids or gases without venting them to the atmosphere. By maintaining a sealed circulation path, the system ensures zero emissions, minimal product loss, and maximum safety for operating personnel. It is especially suitable for handling hazardous, toxic, flammable, or high-pressure process media.

The system typically integrates isolation valves, pressure regulators, filters, coolers, flow control devices, and analyzers to deliver a representative sample under controlled conditions. After analysis, the sample is routed back to the process line or a designated return point, maintaining process integrity and environmental compliance. Closed Loop Sampling Systems are widely used in refineries, petrochemical plants, SWAS systems, gas processing units, and critical process monitoring applications, offering reliable performance, regulatory compliance, and long-term operational efficiency.