AirTest TR9290 CO2 Transmitter

The TR9290 family of sensors are value-engineered CO2 transmitters targeted at applications where the only requirement is a dependable CO2 sensor that never needs calibration.

Wall Mount TR9290

Wall Mount TR9294

In-Duct Mount TR9291

Splash Resistant Wall Mount TR9293

Aspiration Duct Probe TR9292

Key features of these CO2 transmitters include:

• Internal self-calibration method based on background measurement that also eliminates need for outdoor CO2 sensor.
• Choice of outputs: 0-10V, 0-5V or 4-20mA and LonWorksR.
• Built to ISO 9001 standards.
• Mounting options include wall, duct and in-duct.
• Utilizes a proven infrared measurement technology with over 18 years of flawless operating history.
• Supported by a team of knowledgeable application specialists. We are just a phone call away if you have questions.
• LonMarkR Certified output option.

The AirTest CO2 transmitter has proven itself to be the most trouble free CO2 product available today. A important reason for this is the unique, patented, oval design of the sensor. All competitive sensors use a straight path of infrared energy shining through an air sample to measure CO2. The amount of gas that can be sampled, called the “path length” is limited by the size constraints of their wall-mounted and duct-mounted cases.

The AirTest design, using a similar sized case, provides over double the path length of any other CO2 sensor (4.8”) by bouncing the light around the small oval sensor element. Longer path length means that a larger sample of air is measured. In technical terms this results in an increased signal-to-noise ratio. This means that the AirTest sensor performs better at long-term sensor stability and accuracy than other devices.

Greater dependability is the ultimate result.

Download Brochure