Crowcon Gas Detectors | Portable & Fixed Gas Detection for Industrial & Hazardous Areas


Crowcon | Gas Detectors

Gas Detectors

Crowcon gas detectors (portable and fixed) are suitable for applications in many industries and for detecting a wide variety of dangerous gases – protecting people and plant from gas risks (toxic and flammable) in both industrial and hazardous areas with IECEx and ATEX certification.

For over 40 years, Crowcon have been protecting infrastructure and saving lives by researching and manufacturing the most reliable and economical range of gas detection equipment and gas detection monitors.

Crowcon states its priorities as being market led, listening to customers and helping them achieve their aims striving to be a high quality organisation while Detecting Gas Saving Lives.

Crowcon Gas Detectors

Crowcon Gas Detectors (Fixed & Portable Gas Detection Equipment). Single and multigas gas detection monitors for all industries, including Zone 1 & Zone 2 hazardous areas with ATEX & IECEx Certification.


ATEX Gas Detectors

ATEX Gas Detectors

Crowcon gas detectors and detection equipment is available in fixed or portable type. Simply, fixed gas detectors protect plant; portable gas detectors protect people.

Gas detectors are used globally throughout many industries that regularly face the threat of hazardous gases – their range of gas monitors and devices can protect against leaks and the presence of toxic and flammable gases. There are many commonly occurring gases that can cause a threat to life and infrastructure if undetected including carbon dioxide, methane, sulphur dioxide, hydrogen sulphide, copper sulphate and carbon monoxide.

These gases have varying effects on the human body where some are undetectable by humans as they are odourless and colourless, others can have devastating effects within seconds and must therefore be detected immediately.

By deploying portable or fixed gas detectors, companies can ensure the safety of their workforce, prevent unnecessary damage to their equipment and reduce any down time.

Crowcon Gasman - Portable Single Gas Detector Monitor

Crowcon Gasman – Portable Single Gas Detector Monitor, displaying gas concentration with audible, visual and vibrating alarms.

Crowcon Gas Detection – Portable & Fixed Gas Detectors

See how Crowcon detectors protects workers in their working environments against gas hazards.

CROWCON T4 Portable Multi Gas Detector

Crowcon T4

T4 Gas Detector – enhanced protection and compliance to safety standards from a gas monitor which is highly cost-effective to adopt and to maintain

Crowcon T4 portable multigas detector provides effective protection against 4 common gas hazards:

  • Carbon monoxide
  • Hydrogen sulphide
  • Oxygen depletion
  • Flammable gases

With one-button operation and easy-to-use menus standard to all Crowcon gas detectors, T4 is simpler and safer to use with many features.

  • Positive Safety – visual ‘traffic light’ indication gives the user constant assurance, through a bright green Positive Safety LED, that the gas detection mointor is compliant and operating correctly. If it’s flashing red, your unit needs attention.
  • TWA Resume – unique to Crowcon T4, TWA Resume ensures worker exposure to toxic gases is correctly measured throughout a shift. When most portable gas detectors are turned off and on again, the TWA resets itself, assuming a new work shift is about to begin. TWA Resume provides the option to include previous measurements and ensure that gas exposure during your work shift continues to be assessed cumulatively.
  • Invertible screen – the backlit display can now be inverted 180 degrees to make gas readings easier to read whilst wearing the T4.

T4 gas detector is designed for use in industries such as the oil and gas sector, water and waste treatment facilities, utility companies and steel processing plants.

Crowcon T4 Gas Detector 

CROWCON Gas Detectors – Fixed & Portable Gas Detection & Monitoring


The Dangers Of Gas & The Need For Portable & Fixed Gas Detectors

Gas leaks and exposure to gas can be extremely harmful and be the catalyst for devastating accidents resulting in great loss of life and damage to property. By detecting gases early and taking steps to prevent their release, these dangers can be averted.

In many industries where classified hazardous areas exist, gas can often be the main cause of incidents if it is accidentally ignited. Throughout the oil and gas, petrochemical and offshore marine industries, gas detection is absolutely vital with both portable and fixed units often used in conjunction for gas monitoring and detection and hazardous areas Zone 1 and Zone 2.

GAS DETECTORS – APPLICATIONSCrowcon Hazardous Area Gas Detection

Typical gases detected by Crowcon detectors include :

    • Ammonia NH3
    • Chlorine Cl2
    • Methane CH4
    • Ozone O3
    • Carbon Dioxide CO2
    • Chlorine Dioxide ClO2
    • Nitrogen Dioxide NO2
    • Sulphur Dioxide SO2
    • Carbon Monoxide CO
    • Hydrogen Sulphide H2S
    • Oxygen O2

Crowcon F Gas Detectors

Crowcon F Gas Detectors – suitable for the detection of refrigerant gases.


Detecting Gas In Substations Using Crowcon Gas Detectors

Gas Detection In High Voltage Substations, Switchgear & Cable Chambers. Image : ABB.

➡ Read Blog: How Crowcon F-Gas Detector can be used in the electrical utility industry to provide safe gas detection of SF6 in high voltage substations and gas insulated switchgear.

Crowcon Gas Detection

Detecting Harmful Toxic & Flammable Gases – Saving Lives

Methane Gas Detection

Methane is not generally considered a toxic gas, however it is extremely flammable even in low concentrations when mixed with other chemicals. This article by Thorne & Derrick, published in the journal FS World, describes the risks of methane and provides considerations for working with the gas.

Gas Detection – Know The Risks. Deepwater Explosion


About Crowcon

Founded in 1976, Crowcon has over 40 years experience in manufacturing and developing gas detection equipment for many industries including oil and gas, petrochemical, food and beverage and offshore marine.

How T&D Can Help YouOil & Gas

Since 1985 T&D have serviced the UK and world markets with an extensive range of Electrical, Mechanical, Process & Instrumentation Equipment – our Export Department is staffed by a team of professional sales engineers, sourcing specialists, expeditors and customer service advisors.

T&D global project experience has enabled us to build a solid reputation for the reliable supply of brand leaders – we consolidate your supply chain by providing single-source logistics to any international destination.

See how Thorne & Derrick service and support our key global markets and hazardous area industries in the following SlideShelf of Industry Infographics.

  • Measurement – Temperature, Humidity, Pressure, CO2
  • Gas Detectors (Industrial), Leak Detection (Refrigerant) & Analyzers
  • Heat Tracing Systems & Trace Heating Cables
  • Heaters – Drum, IBC, Tank, Immersion & Process
  • Valves, Gauges, Sensors & Monitors
  • Meters – Flow, Water, Gas, Heat & Energy
  • Surface Heating Elements, Mats & Pads
  • Hazardous Area Power Distribution, Lighting & Enclosures

Integrity, Values & Trust. T&D are a world-class business committed to ensuring the correct installation and application of all products we distribute. Where applicable installer training and support services including site surveys can be made available.