Natural Gas Analyzer Description

Natural gas analysers are used in many different configurations, from single valve/detector instruments to complex multi-channel analysers. GAS offers the optimal solution for your specific natural gas analysis needs with a reliable natural gas analyzer range. Natural gas analysers are used in many different configurations, from single valve/detector instruments to complex multi-channel analysers. GAS offers the optimal solution for your specific natural gas analysis needs with a reliable natural gas analyzer range, serving energy sectors across the Middle East including the UAE, Saudi Arabia, Qatar, Kuwait, Oman and Bahrain. Our analysers comply with international standardised methods, making them the ideal choice when you need a high-precision gas chromatography analyzer for natural gas from a trusted global natural gas analyzer supplier.

Natural Gas Analyzer Method Compliance

Our systems are designed to meet strict industry regulations, functioning perfectly as an ASTM D1945 natural gas analyzer and complying with a wide range of international standards:

GPA 2261, 2177, 2186, 2286, ISO 6974, 6975, ASTM D1945, D1946, D7833

Natural Gas Analyzer Features

Configuration ‘NGA-2A Extended’ is often used and covers many NGA Analyzer requirements. The 2-channel instrument has 3 valves, packed and capillary columns, and TCD-FID for detection.

The TCD channel analyses CO2, C2 and H2S on the Hayesep column and H2, O2, N2, CH4 and CO on the Molsieve column. 

On the FID channel of this Natural Gas GC Analyzer,  hydrocarbons from C1 up to C8 and higher (i.e. C20 ) are measured, including baseline separation of neo-pentane. Robust diaphragm valves with extended lifetime are mounted in an independently heated valve oven. Micropacked columns (for TCD channel) are located in this valve oven as well, while a capillary column (on FID channel) is placed in the GC oven with temperature programming, allowing optimal settings for both channels. The analyser is based on Thermo GC1600, with a modular injector and detectors, providing high flexibility and high uptime.

Natural Gas Analyzer Specifications

As a premier piece of Natural Gas Testing Equipment, this system offers top-tier technical specifications:

NGA configuration:   NGA-2A Extended 

Standardised methods: ASTM D1945, D1946, ISO 6974, 6975, 6976, GPA 2261, 2177, 2186, 2286

GC instrument: 2-channel instrument based on Thermo Trace GC1600

Optional: 

An additional channel for low-level sulphur using FPD or PFPD.
An additional channel with carrier gas argon or nitrogen for accurate helium and hydrogen analysis.
Stop-flow valve or back pressure regulator Stream selector valve
Mass Spectrometer for ppb level detection of sulphur components, siloxanes, terpenes and ammonia.
CompactGC4.0: Fast NGA on a small footprint (2 minutes runtime).
NGA 1: (1 valve, 1 TCD); C1-C5 , C6 +, N2 , CO2 (ISO 6974-4).
NGA 3: (3 valves, 1 TCD); C1-C5 , C6 +, O2 , N2 , CO2 , H2 S (ASTM D1945).

Sample tubing: Sulfinert ® tubing for inert sample path (H2S analysis)

Application: Custom-configured analyser for the analysis of gaseous natural gas samples, containing  hydrocarbons, permanent gases and sulphur (H2S)

Analysis Time:  9 minutes up to C8; 20 minutes up to C20

Minimum detectability:  

< 0.01% for components on TCD; H2 S: 0.05%
< 10ppm for hydrocarbons on FID
< 1 ppb for sulphur components, siloxanes, terpenes on mass spectrometer (AEI) < 200 ppb for sulphur components on FPD
< 25 ppb for sulphur components of PFPD

Dynamic Range: TCD: 4 decades; FID: 7 decades

Accuracy: Dependent on external calibration and repeatability.

Natural Gas Analyzer Applications

• Petrochemical, Research
• Refineries
• Testing laboratories

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