Senseca HD21AB17 Indoor Air Quality Monitors (CO2, CO, Patm, RH, T)

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

Relative Humidity RH (HD21AB17 only)

Type of sensor Capacitive

Sensor protection Stainless steel grid filter (on request 20µm sintered filter P6 in AISI 316 or 10µm sintered filter P7 in PTFE)

Measurement range: 0 … 100 % RH

Sensor working range: -20 … +60°C

Accuracy: ±2% (10÷90% RH) ±2.5% in the remaining range

Resolution: 0.1°C

Temperature dependence: ±2% on all temperature range

Hysteresis and repeatability: 1% RH

Response time (T90): < 20 sec (air speed = 2m/sec) without filter

Long-term stability: 1%/year

Temperature T (HD21AB17 only)

Type of sensor NTC 10kΩ

Measurement range: -20 … +60°C

Accuracy: ±0.2°C ±0.15% of measurement

Resolution: 0.1°C

Response time (T90): < 30 sec (air speed = 2m/sec)

Long-term stability: 0.1°C/year

Datasheet

Manual