LNG & Natural Gas Analysis

Understand your gas quality – and what it means for your operation

When gas quality affects both safety and revenue

When you work with natural gas or LNG, small variations in gas quality can have significant consequences.

Your process depends on accurate knowledge of composition, energy content, and contaminants – whether you are handling gas in pipelines, processing plants, LNG terminals, or custody transfer points.

At the same time, you need to ensure compliance with specifications, protect your infrastructure, and maintain stable operations across changing conditions.

For natural gas and LNG applications these are some of the parametres we can help you measure, monitor and analyse:

CH₄ (Methane)
C₂–C₆ hydrocarbons
CO₂ (Carbon dioxide)
H₂S (Hydrogen sulfide)
H₂O / Moisture
Hydrocarbon dew point
Oxygen (O₂)
Nitrogen (N₂)
Calorific value
Wobbe index

Where measurement becomes critical in your process

Gas analysis is not just about knowing what is in the gas – it is about understanding how it affects your operation.

Changes in gas composition influence calorific value and billing accuracy
Moisture and hydrocarbon dew point determine whether condensation will occur
Hydrogen sulfide (H₂S) and other impurities impact corrosion, safety, and compliance
Unreliable measurements can lead to incorrect decisions and operational risk
Harsh environments place high demands on both instruments and system design

In practice, this means that reliable, continuous measurement is essential – not only for control, but for confidence in your data.

How measurement technologies support stable gas operations

Different measurement principles are used depending on what you need to understand in your gas stream.

When you need insight into gas composition and energy content

Real-time composition analysis gives you continuous visibility of key components and derived parameters such as calorific value and Wobbe index.

This allows you to follow changes in gas quality and ensure accurate energy measurement – especially in custody transfer and fuel gas applications.

When condensation and moisture must be avoided

Monitoring hydrocarbon dew point and trace moisture helps you understand when condensation may occur.

In practice, this allows you to protect pipelines and equipment, while ensuring that gas remains within specification during transport and processing.

When trace components affect safety and compliance

Measurement of H₂S and other impurities is essential when even small concentrations can lead to corrosion, safety risks, or non-compliance.

Continuous monitoring gives you early indication of changes and supports safer operation.

When installation conditions are part of the challenge

Gas analysis systems are often installed in hazardous or demanding environments.

This requires solutions designed for stable operation in ATEX areas, offshore installations, and LNG facilities – where both safety and accessibility must be considered.

When reliable results depend on proper sampling

Accurate measurement is not only about the analyzer itself.

The way the gas sample is extracted, conditioned, and delivered has a direct impact on data quality. A well-designed sampling system ensures that your measurements are representative and stable over time.

What this means for your daily operation

When your gas measurements are reliable, you gain more than just data.

You can verify gas quality with confidence before distribution or use
You reduce the risk of condensation, corrosion, and equipment damage
You improve accuracy in custody transfer and energy calculations
You gain stable input for process control and optimisation
You reduce unplanned downtime and maintenance needs

In practice, this gives you a more predictable operation and a stronger basis for decision-making.

A partner who understands both measurement and application

At Norsk Analyse, we work with gas analysis across the entire value chain – from processing to transmission and end use.

We combine different measurement technologies and system design approaches to match your specific process conditions. This includes everything from analyzer selection to sampling systems and installation in hazardous areas.

Our role is to help you choose the right measurement approach – and ensure that it works in practice.