Telaire T8100 NS/NSP Series

Telaire Ventostat T8100 NS NSP Series Wall Mount CO2 Gas Sensors

Wall-Mount CO2 Gas Sensors

The Telaire Series of Ventostat T8100 NS/NSP Wall-Mount CO2 Sensors provide patented, absorption infrared gas sensing with high accuracy in a compact, low cost package.



  • Patented, Absorption Infrared Gas sensing engine provides high accuracy in a compact low cost package.
  • Local temperature adjustments with slide pot and night set override control.
  • Patented ABC Logic™ self-calibration system eliminates the need for manual calibration in most applications.
  • Lifetime CO2 calibration guarantee when using ABC Logic™.
  • Mounting plate with two-piece terminal blocks provide quick, easy wiring.
  • Gas permeable, water resistant CO2 diffusion filter prevents particulate and water contamination of the sensor.
  • Locking screw secures cover and sensor to the mounting bracket for tamper resistance.
  • Dual simultaneous analog outputs (V & mA) available.
  • Sensors are shipped factory calibrated.
  • Temperature sensor on all models.
  • Modern enclosure with customized branding available.


2 minutes (operational)

Sensing Method
  • Non-dispersive infrared (NDIR) absorption
  • Gold-plated optics
  • Patented ABC Logic self calibration algorithm
CO2 Measurement Range 0 to 2000 ppm (0 ppm = 0 V, 4 mA; 2000 ppm = 10/5V, 20 mA)
CO2 Accuracy ±30 ppm or 3% of the reading shown, whichever is higher *
*CO2 accuracy statement excludes standard gas used for calibration that has an accuracy of 2%. In addition, there is a potential digital to analog error of up to 2%.
Power Supply Requirements 18-30 VAC RMS, 50/60 Hz, or 18 to 42 VDC, polarity protected
*AHRAE — regulation 62 states maximum indoor CO2 level of 1000 ppm
Power Consumption Typical 0.7 W at nominal voltage of 24V AC RMS
Temperature Dependence 0.2% FS per °C (±0.11% per °F)
Stability <2% of FS over life of sensor (15 years)
Pressure Dependence 0.135% of reading per mm Hg
Certifications CE EMC, RoHS, REACH and WEEE compliant
Signal Update Every 5 seconds
CO2 Warm-up Time 2 minutes (operational)
10 minutes (maximum accuracy)
Operating Conditions 32°F to 122°F (0°C to 50°C)
0 to 95% RH, non-condensing
Storage Conditions -40°F to 158°F (-40°C to 70°C)
Flammability Classification UL94 5VA
Thermistor Type NTC 10 kΩ
Thermistor Accuracy 1±°C (15°C to 35°C)
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