Carbon Dioxide (CO2) Transmitter


aSENSE by Senseair , Sweden is a wall mounting type Carbon Dioxide Transmitter, with standard range of 0…2000 PPM. It measures both CO2 concentration and temperature in the ambient air. The data is transmitted to a BMS system or controller.

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Product Description

Manufacturer SenseAir
Model aSENSE Model Disp
CO2 Measurement Range  0-2000 PPM CO2

Temperature Measurement Range 

 -20 to +60°C

Accuracy (CO2)

±30ppm ±3% of reading 

Accuracy Temperature

± 1°C TBD

Operating Temperature Range 0 to +50°C
Operating Humidity Range 0 to 95% RH (non-condensing)
Warm-up Time ≤1 min. (@ full specs ≤10 minutes)
Sensor Life Expectancy >15 years
Maintenance Interval Maintenance Free
Self Diagnostics complete function check of the sensor
Display 4 Digits, 7 segments LCD with ppm / °C / % indicator (models –D)
Power Input 24 VAC/VDC±20%, 50-60 Hz (half-wave rectifier input)
Power Consumption < 3 Watts average
Wiring Connections screw terminals, max 1,5 mm2 wires/ European and US standard J-boxes
Analogue Protection PTC fuse (auto reset) on signal return M, short-circuit safe

Linear Outputs OUT1 

Linear Outputs OUT2

0-10VDC or 2-10VDC for 0-2000ppm CO2/ 

0/4 – 20mA for 0 – 2000ppm CO

0-10VDC or 2-10VDC for 0-50°C

0/4 – 20mA for 0-50°C 

D/A Resolution 10 bits, 10 mV / 0.016 mA
D/A Conversion Accuracy voltage mode: ± 2% of reading ± 50 mV current loop : ± 2% of reading ± 0.3 mA
CO2 Measurement
Operating Principle Non-dispersive infrared (NDIR) with Automatic Baseline Correction (ABC) 6
Response Time (T1/e) 2 min. diffusion time
Pressure Dependence + 1.58 % reading per kPa deviation from normal pressure, 100 kPa
Annual Zero Drift  ±0.3 % of measurement range
Temperature Measurement
Operating Principle Thermistor
Warranty 12 Months Manufacturer warranty

Additional Information

Model No
Accuracy (Temperature)
Temperature Range
Operating Temperature
Operating Humidity
Power Consumption
Sensor life

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