City Technology extends emissions range with new six new gas sensors

Honeywell company, City Technology, the World's leading manufacturer of gas sensors for industrial safety and emissions applications, has added six new sensors to its electrochemical sensor range. The 5OxLL long life oxygen (O2) and A5F+ carbon monoxide (CO) sensors extend the 5 Series range - widely used by high specification flue gas analyser manufacturers globally requiring EN 50379-2 compliance. The new 4 Series range includes the 4OxLL long life O2, 4OXV O2, 4F and 4MF CO sensors - designed for use with EN50379-3 compliant analysers.

Emissions gas sensing for domestic and light commercial boiler combustion analysis can be a challenge. Sensors are subjected to high humidity, temperature changes, corrosive and acidic gases which can cause field failures and measurement inaccuracies - compromising performance and stability and increasing servicing/calibration needs. A suitable sensor should be built to a high specification and from resistant materials that enable them to withstand these conditions. Added to this is the ever-present need to reduce operational costs. With much focus on the specification of the analyser itself, it is essential to remember that an analyser is only as good as its sensors.

The new 5OxLL long life O2 sensor is RoHS compliant and designed to operate for the whole life of the analyser. It reduces the cost of ownership and field failures through enhanced stability, and enables analyser manufacturers to reduce servicing costs. 5OxLL's impressive longevity is achieved by its "electrochemical pump" technology, removing the need for a consumable lead anode; the life limiting component in today's comparable sensors.

The new A5F+ CO sensor is ideal for "high range" applications (up to 20,000ppm) which traditionally require a second sensor to meet EN50379-2. A5F+'s robust and advanced design is H2 compensated and also includes high capacity filter to achieve reliability and extend operational life (5 years).

City Technology's new compact 4 Series sensors include the 4OXV O2 sensor, with a 2 year life and the 4OxLL long life O2 sensor - designed to match the lifetime of the average analyser. This new range also includes the 4F and 4MF CO sensors, offering low and high range measurements; 4F (0-20,000ppm) and 4MF (0-100,000ppm). Both sensors include robust internal acid gas filters to ensure operational life in demanding emissions environments.

Tom Gurd, Product Marketing Manager for City Technology comments: "The addition of our new premium 5 Series sensors, designed for high-end analytical flue gas analysers and the new 4 Series emissions sensors for combustion efficiency instruments used in installation and service applications, extend our market leading portfolio. These products respond to key market drivers such as benchmark compliance, enhanced sensor reliability and reduced cost to serve. With over 25 years' emissions sensing expertise, we have considerable knowledge of core market needs and what today's equipment manufacturers and end users demand.

"These six new sensors use advanced component design, ultra-resistant materials, high activity electrodes and high capacity filters ensuring repeatability, stability and accuracy as well as fastest response times. They also help businesses leverage sizeable operational efficiencies by reducing measurement time and service time."


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About City Technol

City Technology, owned by Honeywell, is the world's leading manufacturer of gas sensors and the brand of choice for the emissions monitoring industry, with over 25 years' experience innovating pioneering solutions that set the standard for combustion analysis sensing.

City Technology manufacturers 4.5M sensors every year, designed for use in flue gas analysers, personal protective equipment, industrial safety systems and residential detectors throughout the world. Over 300 sensors, based on electrochemical and other technologies, respond to 28 common and exotic gases with outstanding stability, excellent linearity and high immunity to cross-contaminants.

About Honeywell

Honeywell International ( is a Fortune 100 diversified technology and manufacturing leader, serving customers worldwide with aerospace products and services; control technologies for buildings, homes and industry; automotive products; turbochargers; and specialty materials. Based in Morris Township, N.J., Honeywell's shares are traded on the New York, London, and Chicago Stock Exchanges. For more news and information on Honeywell, please visit