Systech Instruments is a multinational company with headquarters in the UK (Systech Instruments) and U.S (Illinois Instruments). Manufacturing online, portable and laboratory gas analysis equipment for process idustries, gas flushing and permeation applications. We supply a wide range of analysers specifically designed for the detection of process gas mixtures; for the headspace analysis of food packaging and permeation of oxygen and moisture through bottles, packages and films for the food and pharmaceutical industry.

About Us

Systech Illinois specialises in online, portable and laboratory gas analysis equipment. We are a multinational company with offices and gas analysis equipment manufacturing facilities in the UK and the U.S. With 30 years as one of the leading experts in gas and moisture measurement, Systech Illinois’ application and technology knowledge provides efficient gas analysis solutions in many industry sectors worldwide.

The Systech Illinois Gas Analysis Product Range

Gas Analysis for the Food and Packaging Industry

The headspace range offers fast, easy to use, accurate gas analysis of gas flushed food packages and headspace analysis of any kind. Systech Illinois headspace gas analyzers can be used effectively with packages of all sizes and there are portable and waterproof versions available.

Systech Illinois' range of oxygen permeation analyzers and water vapor permeation analyzers offer precise, accurate measurements for all packaging film, finished package and PET bottles.

Oxygen Analyzers for Process Industry

Systech Illinois’ range of oxygen analyzers provide measurements from trace ppb levels up to high percentage levels. Available in wall mounted IP66-rated, benchtop and rack mounted versions, our oxygen analysis equipment includes intrinsically safe units for process uses. The EC900 oxygen analyzer uses electrochemical cell, the ZR800 oxygen analyzer uses zirconia oxide ceramic, and the PM700 oxygen analyzer uses paramagnetic technology.

Moisture Analysis for Process Industry

For analysis of moisture the MM500 moisture analyzer uses phosphorous pentoxide and the MM400 moisture analyzer uses aluminium oxide, to measure from as low as 0.01 to 1000 ppm, or in dewpoint °C or °F. Systech Illinois’ moisture analyzers are panel, bench or wall mounted in a weatherproof cabinet, or rack mounted.

Thermal Conductivity Analyzers for Process Industry

Systech Illinois’ 542 thermal conductivity analyzers come pre-programmed to monitor common combinations of measured and background gases.

ATEX Approved Analyzers

For hazardous areas, the EC91 Intrinsically safe analyzer is for use in EEx ia IIC T4 Zone 0 areas and EC92DIS ATEX approved portable analyzer is for use in Ex ia IIC Ga T4 Zone 0. These instruments are capable of measuring both ppm and percentage levels of oxygen.

Call Systech Illinois when you need to:

  • Measure the level of oxygen
  • Analyze moisture content of almost any gas
  • Test food packaging for the permeation of oxygen or water vapor
  • Measure the headspace gas of Modified Atmosphere Packaging
  • Measure oxygen in a hazardous area
  • Obtain expert advice on measuring almost any gas in a binary mixture


Systech Illinois’ goal is to operate in finite business sectors where we will be recognised by our customers as experts on the supply of gas analysis instrumentation. The company believes that it is only by having a well developed and well trained workforce, with established and effective procedures, that we shall be able to offer our customers a continuing high level of service.

Quality Assurance


Systech Instruments Ltd operate a Quality Management System which complies with the requirements of ISO 9001:2008.  Our quality programme benefits our customers in all areas of business they have with Systech Illinois, including the continued supply and support of our first class gas analyser products and services.


The History of Systech Illinois: Gas Analysis Equipment Specialists

Systech Illinois is the marketing name for sister companies, Systech Instruments Ltd in the UK, and Illinois Instruments Inc. in the U.S. At each of the headquarters there is a gas analyzer manufacturing facility and offices where approximately 21 employees provide customer service, sales and technical support.

Systech Illinois spends more than 8% of it's turnover in research and development of gas analysis instrumentation and moisture measurement analyzers.


Systech - Model EC900 - Process Oxygen Analyzer

Systech’s oxygen analyzers are designed to accurately measure oxygen levels within most industrial gases.

Systech - Model EC92DIS - Intrinsically Safe Portable Oxygen Analyzer

Portable oxygen analyzer used to measure oxygen levels suitable for hazardous environments. The EC92DIS portable oxygen analyzer can be used in hazardous areas - approved for II 1G Ex ia IIc Ga T4 - Zone 0 (ATEX). It is designed to measure oxygen levels and can detect oxygen levels as low as 1ppm, up to high percent oxygen levels and can be used on most industrial gases and atmospheres. There is no need for routine maintenance of the fuel cell, and ...


Custom Design Gas Analyzer & Moisture Analyzer Solutions

Systech Illinois' products are of the highest standard. However many gas analyzer and moisture analyzer solutions require varying degrees of customisation based on gas measurement and moisture measurement. Whether you need wall-mounted moisture analyzers or waterproof gas analyzers, our design team are extremely flexible and responsive to your individual requirements. Our design team are extremely flexible and responsive. Typically they will give ...

Gas & Moisture Analysis Services

Systech Illinois can provide oxygen permeation and water vapour permeation testing services in our own laboratories, and can offer bespoke gas and moisture analysis equipment and solutions. Whatever your requirements, we will provide you with a professional service throughout the life of your gas analyzer or moisture analyzer.


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Company details

Business Type:

Industry Type:
Monitoring and Testing

Market Focus:
Globally (various continents)

Office & Distributor locations:


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