Analyser Systems

Analyser measurement design and implementation

Analyser systems can improve product quality, increase the yields of products with higher economic value, increase product throughput and output and reduce energy costs.

Process analyzer systems should be considered for product quality control when frequent and rapid measurements are required because of fast and substantial variations in process stream quality.

Today, environmental standards are becoming more stringent. Process analyzers are used to detect hazardous plant conditions and for monitoring government-mandated requirements concerning pollutants in ambient air, stack emissions, and effluent streams.


  • Stack Emission Monitoring - CEMS Analyser Systems, Analysis of Hydrocarbons, O2, CO, CO2, NO, Nox, SO2, H2O
  • Custody-Transfer of Natural Gas, Analysis of BTU, N2 to C6+, H2S, Dewpoint for offshore and pipeline metering skids
  • Ultra-Low-Sulfur Diesel, Analysis of Sulfur in diesel fuel for most highway vehicles
  • Quality Analyzer systems, Perfectly tailored to your individual requirements
  • Steam and Water Analysis System (SWAS), Analysis of pH, Conductivity, Silica, Sodium, Dissolved Oxygen, Phosphate, Chlorides, TOC for power stations
  • etc.

Analyser Cabinets

Mechatest O2 Analyser Solution

The design of the analyzer cabinet or shelter must consider many factors:

  • Local ambient conditions
  • Hazardous area classification
  • Power distribution
  • Heating, Ventilation / Air conditioning (HVAC)
  • Gas detection
  • Construction shelter GRP, Concrete, Stainless Steel, Coated steel
  • Construction floor / base
  • Calibration facility
  • Grab sample point
  • Carrier gas facility

Analyser Walk-in Shelters

Gas analyser shelter by Mechatest

Engineering and manufacturing high quality analyser shelters. Mechatest offer a full design and manufacturing capability for the supply of analyser shelters.

Our shelters are suitable for outdoor use in an industrial environment. After selecting the Analysers and designing the sample systems it is very important to choose the environment for the complete system. The assembly of multiple instruments in a shelter creates several economic advantages:

Reliable / stable measurement

A good working environment for monitoring and maintenance 

Lower maintenance costs 

Longer lifespan of the equipment, Etc.

In a lot of cases a “walk-in” shelter is a very good and durable solution.


Importance of Sample Probes

Mechatest Filter Sample Probe

Sample probes are very important and mostly an underestimated part of the sampling system.
Why you should use sample probes;

  • Free First Filtration Effect!
  • Faster Response (< Lag Time)
  • Representative Sample, better results!
  • Moisture Filtration (fallback) Principle

See more sample probe options >>

Sample Probes Types

Mechatest Retractable Sample Probe
  • Open Probes
  • Filter Probes
  • Multiport Probes
  • Heated Probes
  • Fallback Probes
  • Small Bore Gas Probes
  • Retractable Sample Probes
  • Isokinetic Steam Probes

Calculating Services;

  • Lag Time
  • Velocity
  • Probe Vibration
  • Moisture Fallback Effect

Sample Pre-conditioning Systems

Mechatest Sample Conditioning Solution

Sample Pre-Conditioning System (SCS) can be necessary to cool the sample, heat up, reduce or boost the pressure or to vaporise from liquid to gas.

Reasons for this can be :

  • Very high pressure or temperature
  • Very hazardous sample
  • Low pressure or temperature
  • Minimising the sample (gas)volume

The total of the necessary equipment for this is called the Pre-conditioning system.

This system is placed on or near the sample take-off point. The sample pre-conditioning system can typically comprise one of the following components:

  • Booster pump
  • Pressure regulator
  • Vaporising pressure regulator
  • Cooling or heating facility
  • Pressure or flow indicator

When pressure regulators or vaporising pressure regulators are used, it is very important that the volume between the sample “sample take-off point” and the vaporiser (regulator) is kept to a minimum to avoid long sample time lag. 

Sample Conditioning Systems

Sample Conditioning System (SCS) are necessary if some of the functions are not solved in the pre-conditioning;

  • Pressure (reducing or boostering)
  • Filtration (particles / condensate)
  • Temperature (cooling or heating)
  • Flow regulation
  • Humidity / Condensation
  • Safety (spring return and/or relief valves)

Sample Transport Lines

Flexible Sample Transport Line

  • Temperatures from frost protection up to 200°C
  • Up to 150 m in a row
  • Regulated or self-regulating
  • Chemical Resistance
  • Exchangeable Lines
  • Heat Tracing 
  • Avoid Condensation (stay above dewpoint)
  • Don’t Loss Low Concentration Components !


Liquid Recovery Systems

Liquid recovery system by Mechatest

The Mechatest liquid sample recovery systems are specifically designed to collect liquids of sample effluent from process liquid analysers and return this to the process line or any other suitable location.

Because of the high sensitivity of the process analysers the sample discharge needs to drain under atmospheric pressure conditions. Liquid sample recovery systems provides a stable condition at the process analyzer outlet.

Typical applications are analysis of gasoline, bio

The system is also ideal for use in applications where it is undesirable to discharge hydrocarbons or chemicals into sewage drains.

Effectively dealing with the effluent from process analyzers is a concern to both environmental engineers and process analyzer engineers at petrochemical plants.  

Calibration Systems

Liquid calibration system by Mechatest
Liquid calibration system by Mechatest

Calibration system for FT-NIR analyser

This kind of calibration system is ideal for the cleaning and calibration of the FT-NIR analyser. The calibration system is based on two storage vessels, one for cleaning with Pentane and one for calibration with Toluene. The buffers vessels with levelalarm will avoid that gas-bubbles will flow to the analyser.