SensAir Fixed Point Gas Detector

SKU: SensAir

SensAir is designed to be an industrial grade, yet cost-effective, fixed point gas detector system meeting a wide range of industrial and commercial applications providing ambient gas monitoring for safety applications. SensAir is available in models for detecting toxic gas, combustible gas, and oxygen deficiency.

  • Brand




Industrial Grade Meets Low Cost.
Cost effective Simple, gas-specific design saves up front cost and overall cost of ownership.
High Performance Fast response electrochemical sensors for toxic gas applications.  Broad range, poison-resistant catalytic bead sensors for combustible applications. And highly stable electrochemical sensors for oxygen deficiency.
Easy Operation and Maintenance Bright, LED display with intuitive interface.  Easy to replace sensors for speedy preventative maintenance operation. Blind model options available.
Reliable Rugged, Explosion Proof 316 Stainless Steel and Aluminum housings field tested in harsh environments.
Certified Protection Designed to protect workers and equipment.  Factory Mutual (FM) and CSA Certified for Hazardous Classified Area Installation in Class 1 Div 1 & Div 2 and ATEX Zone 1 & Zone 2


Our most cost effective, hazardous area rated gas detector for chemical and hydrocarbon processing facilities.
  • Factory Mutual (FM) and CSA Certified for Hazardous Classified Area Installation in Division 1 & Division 2 and ATEX / IECEx Zone 1 & Zone 2

  • Available in Explosion Proof 316 Stainless Steel and Aluminum Enclosures and Sensor Housings

  • Robust, Poison-Resistant Catalytic Bead Sensor with Rapid Response

  • Remote Mounted Sensor Option

  • Sensor Offered in Standard or Compact Size Options

  • On-Board Bright LED Display or Blind Models

  • Non-Intrusive Zero & Span Adjustments

  • 3-wire Design with 4-20mA Output

  • Horizontal or Vertical Installation

SensAir Combustible is an industrial grade fixed point gas detector with robust poison resistant sensor that maximizes sensor life and reduces cost of ownership. Advanced catalytic bead sensor technology detects a wide range of combustible gases. SensAir Combustible is housed in a rugged, explosion-proof aluminum or 316 stainless steel enclosure with variable mounting orientation options. A three-wire, 4-20mA output enables easy installation in retrofit or new applications with interface to common facility communication links.

Sulfides and Silicons are known to poison or inhibit standard catalytic bead sensors at concentrations as low as one part per million (1 PPM). Poisoned catalytic bead sensors are rendered ineffective and unable to detect gas. Advanced sensor technology used in SensAir Combustible significantly reduces the effects of poisoning, thereby minimizing the replacement of sensors and costs of ownership, making this product the ideal gas detector for chemical and hydrocarbon processing and manufacturing facilities.

The advanced SensAir Combustible catalytic bead sensor employs a pair of pellistors (catalytic beads) that provide uniform electrical resistance in clean air. An active pellistor “catalyzes” combustible gas when present while a reference pellistor compensates for changes in ambient environmental conditions. The difference provides an output that is accurate and linear. This advanced design provides excellent combustible gas sensitivity, rapid response, and extended sensor life.

SensAir’s advanced sensors combined with its simple, low maintenance design lowers operational expenses making it an ideal, cost-effective gas detector for industrial applications.


The ultimate solution for high-volume, price-sensitive gas detection installations.
  • CSA Certified for Hazardous Classified Area Installation in Division 1 & Division 2 and ATEX/ IECEx Zone 1 & Zone 2

  • Aluminum, Stainless-Steel and Polymeric Enclosure and Sensor Holder Options

  • Fast Response Electrochemical Sensors for Toxic Gases

  • Highly Stable Electrochemical Sensors for Oxygen Deficiency Detection

  • On Board Bright LED Display or Blind Models

  • Non-Intrusive Zero & Span Adjustments

  • 3-wire Design with 4-20mA Output; Options for Modbus and BACnet — Both Include 3 Additional Relays

  • Horizontal or Vertical Installation

Effective Toxic Gas and Oxygen Monitoring Solutions
Engineered with a simple, gas-specific design, SensAir from Sensidyne reduces overall cost of ownership. It features easy to replace, premium grade electrochemical sensors as well as highly-configurable options for instrument enclosure, display, and installation orientation. SensAir is a reliable solution to meet target installation and application requirements. Its feature set and cost effectiveness make SensAir the ultimate solution for OEM, high-volume, and price-sensitive gas detection applications.

SensAir Sensors Options
Ammonia (NH3) 50ppm
Ammonia (NH3) 100ppm
Ammonia (NH3) 300ppm
Ammonia (NH3) 100ppm (Low Temp)
Ammonia (NH3) 300ppm (Low Temp)
Carbon Monoxide (CO) 500ppm
Carbon Monoxide (CO) 100ppm
Carbon Monoxide (CO) 250ppm
Carbon Monoxide (CO) 1000ppm
Chlorine (Cl2) 5ppm
Chlorine (Cl2) 10 ppm
Chlorine Dioxide (ClO2) 5ppm
Hydrogen (H2) 1000ppm
Hydrogen Chloride (HCl) 10ppm
Hydrogen Chloride (HCl) 100ppm
Hydrogen Cyanide (HCN) 20ppm
Hydrogen Fluoride (HF) 10ppm
Hydrogen Sulfide (H2S) 50ppm
Hydrogen Sulfide (H2S) 100ppm
Nitrogen Dioxide (NO2) 10ppm
Sulfur Dioxide (SO2) 20ppm

Oxygen (O2) 0-25% Vol.

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