ISO CERTIFIED. 9001:2015, 14001:2015, 45001:2018
A Process Gas Chromatograph (GC) is an online instrument used to continuously monitor the composition of gases or liquids in industrial process streams. It provides real-time analysis for accurate control and quality assurance. PREI Group manufactures high-performance Process GC panels used in oil and gas, petrochemical, water treatment, and manufacturing facilities. Our panels continuously sample and analyze gas streams to improve process efficiency, product quality, and plant safety. Each system includes reliable chromatographs, advanced electronics, transmitters, communication modules and user-friendly HMI interfaces for seamless integration with PLC, DCS and SCADA systems. With durable enclosures and built-in alarms, our GC panels ensure long-term stability, accurate measurements and compliance with IEC safety standards.
| Component | Description |
|---|---|
| Sample Conditioning System | Filters the sample and regulates pressure, flow, and temperature for accurate analysis. |
| Carrier Gas System | Supplies pure inert carrier gas to transport the sample through the GC. |
| Chromatographic Column(s) | Separates different gas components based on their retention times. |
| Detector | Identifies and quantifies the separated gases. |
| Controller / Analyzer Unit | Processes detector signals, calculates concentrations, and sends data to the control system. |
| Signal/Communication Interfaces | Connects with PLC / DCS / SCADA using 4-20 mA, Modbus, OPC, or Ethernet/IP. |
| HMI / Display Panel | Shows composition values, trends, alarms, and calibration menu. |
| Power Supply & Relays | Ensures safe and stable power to analyzer components. |
| Flameproof / Purged Enclosure | Protects the system in hazardous industrial environments. |
| Calibration Ports / Redundancy | Allows periodic calibration and supports backup instruments if needed. |
Our Process GC panels deliver real-time, precise gas composition data, ensuring efficient operations, process control, and regulatory compliance.
Panels are engineered to specific process requirements, including petrochemical, oil and gas, power, water treatment, and industrial gas monitoring.
Supports PLC, DCS, and SCADA with standard protocols like Modbus, OPC, and Ethernet/IP for real-time monitoring.
Process GC panels are used in refineries to monitor the composition of streams such as naphtha, LPG and natural gas. Real-time analytics help optimize refining operations, maintain consistent product quality, and ensure process control safety and efficiency.
In petrochemical production, GC systems analyze olefins, aromatics, hydrogen and many hydrocarbon mixtures. Continuous monitoring supports reaction control, feedstock adjustment and yield optimization while preventing off-spec product batches.
The process GC panels measure methane, ethane, propane, CO₂, H₂S, and related components to determine gas quality and calorific value. This assures processing safety, pipeline compliance, and combustion efficiency through the transmission and distribution networks.
GC systems monitor ammonia, syngas, and hydrogen purity to ensure correct reaction ratios and stable chemical synthesis. Accurate real-time data improves conversion efficiency, product consistency, and operational reliability.
Process GC units are employed in analyzing emissions and flue gases for pollution control and regulatory standards. Continuous tracking allows early detection of deviations, with environmental and safe plant operation in mind.
Choose Preipolar Engineering for reliable Process GC panels that deliver precise gas composition monitoring, process safety, and seamless control system integration for industrial operations globally.
