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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
