Delta OHM HD45 17A, Manual

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9. TECHNICAL SPECIFICATIONS
Sensor features
Relative humidity RH (for HD45 17…, HD46 17… and HD46 17B… models)
Sensor Capacitive
Measuring range
0...100 % RH
-40…+85°C Dewpoint Td
Sensor operating range -40...+80°C
Accuracy ± 2% (10..90%RH) @ 20°C, ± 2.5% in remaining range
See table for Dewpoint.
Resolution 0,1%
Temperature influence
2% over the whole temperature range
Hysteresis and repeatability 1% RH
Response time (T
90
) <20 sec.
(air speed = 2m/sec and constant temperature)
Long-term stability 1%/year
Temperature T (for HD45 17…, HD45 7B…, HD46 17… and HD46 17B… models)
Sensor type NTC 10K Ω
Measuring range -30...+85°C (-22…+185°F)
Accuracy
(except models with current output) ± 0.2°C ± 0.15% of reading within 0…70°C
± 0.3°C ± 0.15% of reading within -30…0°C, 70…85°C
Accuracy
(for models with current output) ± 0.5°C ± 0.15% of reading within -30…+85°C
Resolution 0.1°C
Response time (T
90
) <30 sec. (air speed = 2m/sec)
Long-term stability 0.1°C/year
Carbon Dioxide CO
2
(for HD45 7B…, HD45 B… and HD46 17B… models)
Sensor NDIR double wavelength
Range 0…5000 ppm
Sensor operating range -5…50°C
Accuracy ± (50ppm+3% of reading) @ 20°C and 1013hPa
Resolution 1ppm
Temperature influence
0.1%f.s./°C
Response time (T
90
) <120 sec.
(air speed = 2m/sec and constant temperature )
Long-term stability 5% of measure/5 years