Gas Detection Sensors

A World Leader in Gas Detection

The sensor is the heart of any gas detection system—a long life element that has minimal cross sensitivity to other gases and is virtually unaffected by ambient changes in temperature, humidity and atmospheric pressures. 

McNeill International offers the widest choice of gas detection sensors in the world, from affordable, award-wining electrochemical oxygen and toxic gas sensors, to combustible and flammable gas sensors including pellistor, catalytic bead and infrared.

Our sensors are designed for a variety of applications (safety, emissions, industrial hygiene and more). We have over 300 sensors for detecting 28 gases, with 10 product ranges utilizing 4 different technologies. We offer just the sensor alone, or we have options that include two different types of electronics: 4-20mA board, or a sensor with a mV board.

McNeill International is a channel partner with Life Safety Distribution, which includes City Technology and Sensoric. We have worked with City Technology for over 35 years, and we are pleased with our role as Channel Partner for the Americas. We sell to designers and manufacturers of gas detection equipment.

We offer personalized service which includes:

  • Stocking of Sensors
  • Fresh Sensors
  • Technical Support
  • Lower Shipping Costs
  • High Quality Customer Service
  • Knowledge of Sensor Technology and Sensor Applications


Oxygen Sensors

Our oxygen electrochemical sensors are known throughout the world for their reliability, durability and design. They have a two year life span and a plug in design, and we have many different styles for both safety and emissions. We offer the sensor alone, sensors with electronics and sensors complete in an enclosure.

Toxic Sensors

Our electrochemical toxic gas sensors are maintenance free and stable for a long period of time, with no chemicals to add or check. Available gas sensors include: Ammonia (NH3), Carbon Monoxide (CO), Chlorine (CL2), Ethylene Oxide (ETO), Hydrogen (H2), Hydrogen Chloride (HCl), Hydrogen Sulphide (H2S), Hydrides, Nitric Oxide (NO), Nitrogen Dioxide (NO2), Ozone (O3), and Sulfur Dioxide (SO2).

Combustible, Flammable & Explosive Gas Sensors

These sensors utilize proven catalytic bead, wheatstone bridge technology for the detection of combustible gases such as Methane. Operating on a wheatstone bridge circuit, these sensors are reliable and cost effective, and supplied in matched pairs to compensate for ambient humidity and temperature variations for added reliability and minimal service.

Sensors Plus Electronics

In many applications, you may find it more cost effective to buy a sensor pre-calibrated with its own circuit board. It is also often best to use sensors combined with attached accompanying electronics for new product design. 

We also offer:

  • 4-20mA boards
  • mV boards
  • Aspiration Fixings
  • Mounting Noses
  • Mounting Collars
  • Specialty Sensors for Many More Gases

Please let us know your application and we will help with your gas detection solutions.

Call: 1-800-MCNEILL (626-3455) or 770-664-7278