Gas Sampling Systems

Spot Sample Stations for Gas and Liquefied Gas

Mechatest design standard and custom made gas or liquefied gas spot sampling systems that can take spot samples of gasses, liquefied gas or flashing fluids under process conditions.

The systems with sample cylinders enable operators to obtain samples of gasses with high process pressures, liquefied, hazardous or toxic gasses.

Mechatest LPG Gas Sampler

Gas Sampler Features

  • Complete gas sampling systems available in 316 stainless steel, Monel, Inconel, Incoloy, Hastelloy, Duplex or PTFE
  • Custom made to customer specifications and sample cylinder
  • With externally coupled valves
  • Samples with process temperature > 60°C shall be equipped with sample cooler
  • System or bypass purge
  • Cylinders conform to the “Transportable Pressure Equipment Directive 99/36/EC” (TPED) and the “Shipping Container Specifications” DOT from the U.S.
  • One-handle operation by multiple valves guarantees simple operation and easy sample taking without complicated sampling procedures
  • Purge options available
  •  Sampling systems with NACE MR0175 or NACE MR0103 standard


Sampling systems for Gas or Liquefied Gas Applications, for high pressure, low and high temperature, corrosive, arduous and sour service, strong toxicity, strong volatile and dangerous liquid gas mixture or gas which is bane to the environment.

Applications will found in the Petrochemical and Chemical industry, products to be sampled are;

  • Acetylene samples
  • Butane samples
  • Ethylene samples
  • Flue gas samples
  • Natural gas samples
  • LPG samples
  • Propylene samples
  • Chemical mixture samples
  • Hydrocarbon samples
  • Liquefied gas samples
  • Liquid flashing samples
  • etc.

Safety Accessories

  • Spring return handles on valves
  • Safety relief devices for overpressure protection
  • Activated carbon filters on the venting outlet
  • Venting solutions to release pressure on the quick connectors or purging
  • Sample station enclosures GRP, Stainless Steel, Coated with offshore painting specifications
Active Carbon Filter Sampler Mechatest  EN148 connection
Active Carbon Filter for Sampler Mechatest EN148 connection

VOC Detection in Sample Cabinet

Oil installations, petrochemical plants and refineries are industrial sites that manage several raw materials (crude oil, natural gas, chemical intermediates, etc.), thus having great impact on the environment. Industrial processes may generate VOC emissions to the atmosphere, so prevention and control is becoming a very important issue in the petroleum industry.

Mechatest deliver VOC detection systems to include in our sampling system cabinets, read more about the possibilities of VOC monitoring detection systems.

Mechatest Gas Sampling Solution in Sample Cabinet

Mechatest Gas Sample Probe

Importance of Sample Probes

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
Mechatest Retractable Sample Probe

Sample Probes Types

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

Probes Calculating Services

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

Mobile (portable) gas sampler with vacuum pump Mechatest Sampling Solutions


If there is no posiblility (for any reason) to place fixed mounted sampling points, the mobile (transportable) sampling solution is the better choice for you!
This is a custom made and money safe solution, we design for every application a portable sampling system for gas or liquid sampling.
Mobile (transportable) sampling solutions carry with easy a several sample cylinders to the different sample tap points in your plant area.

  • For applications with over-pressure or vacuum, high or low temperature, liquids or gas
  • Optional with vacuum pump for low pressure (vacuum) sample applications
  • Explosion proof