The GAS Permanent Gas Analyser (PGA) is a high-performance gas chromatograph designed for accurate analysis of permanent gases and light hydrocarbons in industrial, refinery, petrochemical, and process gas applications. Built on the proven Thermo Trace GC1600 or CompactGC4.0 platform, the system provides reliable determination of hydrogen, oxygen, nitrogen, methane, carbon monoxide, carbon dioxide, C₂ hydrocarbons, hydrogen sulphide, and carbonyl sulphide.
The analyser utilizes packed-column gas chromatography with Thermal Conductivity Detection (TCD) and advanced column-switching technology to achieve precise separation and quantification of target components. Robust diaphragm valves with internal purge technology significantly extend valve lifetime and reduce maintenance requirements compared with conventional rotary valves.
Designed for continuous operation, the PGA delivers analysis results within 7 minutes with repeatability better than 1% RSD and detection limits down to 25 ppm. The system is fully compliant with ASTM D1946, ASTM D2504, and ASTM D2505 standards, making it suitable for both laboratory and process monitoring applications.
Its modular architecture allows future expansion with additional analytical channels for hydrocarbons, low-level sulphur compounds, hydrogen, and trace CO/CO₂ measurements. Combined with flexible sampling options, Chromeleon data management software, and long-term operational stability, the PGA provides a reliable and cost-effective solution for permanent gas analysis across a wide range of industries.
Benefits
Robust Diaphragm Valve Technology
Diaphragm valves with internal purge provide significantly longer service life and lower maintenance compared to conventional rotary valves.
High Accuracy and Repeatability
Delivers excellent analytical performance with repeatability better than 1% RSD across a wide concentration range.
Modular and Expandable Design
Can be extended with additional channels for hydrocarbons, hydrogen, low-level sulphur compounds and trace CO/CO₂ analysis.
Flexible Sampling Options
Supports stop-flow sampling, vacuum sampling, sample pumps and stream selectors for a wide range of applications.
Reliable Long-Term Operation
Built on proven GC technology for high uptime and stable performance in demanding industrial environments.
| Parameter | Specification |
|---|---|
| Product Name | Permanent Gas Analyser (PGA) – PG200 |
| Supported Standards | ASTM D1946, ASTM D2504, ASTM D2505 |
| GC Platform | Thermo Trace GC1600 or CompactGC4.0 |
| Detector | Thermal Conductivity Detector (TCD) |
| Analysis Time | 7 minutes |
| Minimum Detectability | 25 ppm |
| Repeatability | < 1% RSD |
Permanent Gas Composition Analysis
Analyse hydrogen, oxygen, nitrogen, methane, carbon monoxide, carbon dioxide, C₂ hydrocarbons, hydrogen sulphide and carbonyl sulphide in industrial, refinery and process gas streams.
Process and Fuel Gas Monitoring
Monitor permanent gases and light hydrocarbons to optimise process efficiency, improve safety and maintain product quality.
Sulphur Monitoring
Measure hydrogen sulphide and optionally other sulphur compounds for process control and equipment protection.
Laboratory and Quality Control Testing
Perform routine permanent gas analysis according to internationally recognised standards.
