HD45 / HD46
- 60 -
V2.4
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
±
2.5% (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% 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
(*)
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 (see the commands on pag. 39).
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