Senseca HD21AB Indoor Air Quality Monitors (CO2, CO, Patm)

CO2 Carbon Dioxide

Sensor NDIR Dual Wavelength

Measurement range: 0 … 5000ppm

Sensor working range: -5 … 50°C

Accuracy: ±50ppm+3% of measurement

Resolution: 1ppm

Temperature dependence: 0.1%f.s./°C

Response time: (T90) < 120 sec (air speed = 2m/sec)

Long-term stability: 5% of measurement/5 years

CO Carbon Monoxide

Sensor Electrochemical cell

Measurement range: 0 … 500ppm

Sensor working range: -5 … 50°C

Accuracy: ±3ppm+3% of measurement

Resolution: 1ppm

Response time (T90): < 50 sec

Long-term stability: 5% of measurement/year

Service life: > 5 years in normal environment conditions

Atmospheric Pressure Patm

Type of sensor Piezo-resistive

Measurement range: 750 … 1100 hPa

Accuracy: ±1.5 hPa @ 25°C

Resolution: 1 hPa

Long-term stability: 2hPa/year

Temperature drift: ±3hPa with temperature -20 … +60°C

Datasheet

Manual