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Crowcon’s IRmax is an ultra-compact infrared (IR) gas detector that delivers rapid, failsafe detection of hydrocarbon gases with very low power consumption.

Said to be smaller and lighter than comparable IR detectors, the IRmax is easy to install in even the most inaccessible locations.

Featuring dual-wavelength IR sensor technology in a rugged 316 stainless-steel package, IRmax is designed to operate in the harshest conditions in temperatures ranging from -40 to 75C.

IRmax features Stay-Clir optical components that are treated with a highly durable coating that prevents faults due to condensation.

Because IRmax contains no components for artificially heating optical surfaces, power consumption is reduced and the device requires only 1W of power – 75-90 per cent lower than conventional IR gas detectors, according to the company.

IRmax detectors require smaller and lower-cost power supplies and battery back-up systems.

In addition, low power consumption also means that longer cables can be used and more detectors can be powered on addressable networks.

A T90 response time of 4sec is possible because of a compact diffusion gas chamber in combination with an effective weatherproof cap.

The weatherproof cap also enables remote gassing and calibration of the detector without requiring a special calibration cap and without the need for scaffolding or cherry pickers to access the detector.

Another feature of the IRmax is an optional IR Display, which can be fitted directly to the detector or mounted up to 30m away to enable checking and calibration of detectors situated in remote or inaccessible areas.

As well as delivering essential non-intrusive calibration functions, the display also provides diagnostic information and features to simplify testing and commissioning.

Atex and IECEx-certified for use in Zone 1 and Zone 2 hazardous areas, IRmax features Hart communications and complies with the IEC61508 functional safety standard to SIL 2.

Crowcon Detection Instruments

Crowcon Detection Instruments specialises in the development, manufacture, sale and support of flammable and toxic gas detection equipment. For over 40 years and all around the globe, our products are relied upon to protect people and plant against gas hazards, from oil platforms to steel mills and water treatment works to automobile manufacturers.

Headquartered in the UK and with our own significant local facilities in  Erlanger, USA, Singapore, China and the Netherlands supported by carefully selected distributors, we are proud to uphold our reputation for reliability, technological innovation and equipment that is properly suited to its task.

Crowcon products are sold throughout the world, serving oil, gas and petrochemical companies, public utilities, clean water and sewage treatment companies, fire brigades, construction companies and other organisations where accidental leakage of gas or vapour can become a toxic or explosive danger.

Crowcon has been a part of the Halma Group since 1985. Halma is listed on the Midcap London Stock Exchange (FTSE 350) and is recognised as one of the most successful engineering groups in the world.

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