Instructions

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9.1 TECHNICAL DATA OF THE SENSORS
CO
2
Carbon Dioxide
Sensor NDIR Dual Wavelength
Measurement range 0 … 5000ppm
Sensor working range -5 … 50°C
Accuracy ±50ppm+3% of measure
Resolution 1ppm
Temperature dependence 0.1%f.s./°C
Response time (T
90
) < 120 sec (wind speed = 2m/sec)
Long-term stability 5% of measure/5 years
CO Carbon Monoxide
Sensor Electrochemical cell
Measurement range 0 … 500ppm
Sensor working range -5 … 50°C
Accuracy ±3ppm+3% of measure
Resolution 1ppm
Response time (T
90
) < 50 sec
Long-term stability 5% of measure/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 (HD21ABE17 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% RH
Temperature dependence ±2% on all temperature range
Hysteresis and repeatability 1% RH
Response time (T
90
) < 20 sec (wind speed = 2m/sec) without filter
Long-term stability 1%/year
Temperature T (HD21ABE17 only)
Type of sensor NTC 10kΩ
Measurement range -20 … +60°C
Accuracy ±0.2°C ±0.15% of measure
Resolution 0.1°C
Response time (T
90
) < 30 sec (wind speed = 2m/sec)
Long-term stability 0.1°C/year