Delta OHM HD46… Series - Rh, Temperature And Co2 Transmitters

Relative humidity RH
Sensor Capacitive
Measuring range 0…100 %RH
-40…+85 °C Dew point Td
Working range -40…+80 °C
Accuracy
±2.5% (0…85 %RH) / ±3.5% (85…100 %RH)
@ T=15…35 °C and air speed < 0.25 m/s (*)
(2.5 + 1.5% reading)% @ T= remaining range
See table for Dewpoint
Resolution 0.1%
Temperature
influence 2% on the whole temperature range
Hysteresis and
repeatability 1 %RH
Response time (T90) <20 sec.
(air speed = 2 m/sec and stable temperature)
Long-term stability 1%/year
(*) The instruments are preset to operate in still air. To operate in circulating air
(e.g. in a climatic room), the operating mode of the instruments must be changed.
Temperature T
Sensor NTC 10kΩ
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 (T90) <30 sec. (air speed = 2 m/sec)
Long-term stability 0.1°C/year
Carbon dioxide CO2
 (for models HD4617B…)
Sensor Dual wavelength NDIR
Measuring range 0…5000 ppm
Working range -5…50 °C
Accuracy ±(50 ppm+3% of reading) @ 20 °C and 1013 hPa
Resolution 1 ppm
Temperature
influence 0.1 %f.s./°C
Response time (T90) <120 sec.
(air speed = 2 m/sec and constant temperature)
Long-term stability 5% of the measure / 5 years