Permanent Gas Analyser
Robust GC solution for accurate permanent gas analysis – featuring reliable diaphragm valves, modular detectors, and full compliance with ASTM D1946, D2504, and D2505.
Ready to Elevate Your Analysis?
High-Precision Permanent Gas Analysis
Permanent gas analysis is essential for monitoring process gases, fuel streams, and industrial gas mixtures. The GAS Permanent Gas Analyser (PGA) is a customised GC solution designed for the accurate determination of hydrogen, oxygen, nitrogen, methane, carbon monoxide, carbon dioxide, light hydrocarbons and hydrogen sulphide in a wide range of gas matrices.
Based on proven GC technology, the analyser uses packed columns with column switching and Thermal Conductivity Detection (TCD) to deliver reliable and reproducible results. Robust diaphragm valves with internal purge are mounted in a separately heated valve oven, providing significantly longer lifetime and reduced maintenance compared to traditional rotary valves.
GAS offers Permanent Gas Analysers based on Thermo Trace GC1600 and CompactGC4.0
Applications
- Supported methods:
ASTM D1946, D2504, and D2505 - Permanent Gas Composition Analysis
Analyse H₂, O₂, N₂, CH₄, CO, CO₂, C2 isomers and H2S in industrial, refinery, and process gas streams.
- Process and Fuel Gas Monitoring
Support process optimisation and safety by monitoring permanent gases and light hydrocarbons.
- Includes Sulphur Detection
Detects H2S using TCD, with optional extension to other sulphur componenents en sub-ppm detection limits. - Laboratory and Quality Control Testing
Perform routine, standardised permanent gas analysis in laboratory environments.
Benefits
- Robust Diaphragm Valve Technology
Diaphragm valves with internal purge provide up to five times longer lifetime than rotary valves.
- High Accuracy and Repeatability
Achieve better than 1% RSD accuracy and repeatability across four decades of concentration range.
- Modular and Expandable Design
Optional channels for hydrogen (TCD), hydrocarbons (FID), low-level sulphur (FPD/PFPD), or CO/CO₂ at ppb level (methaniser-FID).
- Flexible Sampling Options
Supports stop-flow sampling, vacuum sampling (only 1 ml required), sample pumps, and stream selectors.
- Full Standards Compliance
Designed to meet ASTM D1946, D2504, and D2505 for permanent gas analysis.
Downloads
Access brochures, technical datasheets, application notes, and software updates
Permanent Gas Analyser Datasheet
Explore analyser configuration, column switching principles, detector options, performance data, and compliance details for the GAS Permanent Gas Analyser.