HD35
- 64 -
V1.12
Atmospheric Pressure
Sensor
Piezo-resistive
Measuring range
300…1100 hPa
Resolution (instrument)
0.1 hPa
Accuracy
± 0.5 hPa (800...1100 hPa) @ T=25°C
± 1 hPa (300...1100 hPa) @ T=0...50°C
Stability
1 hPa/anno
Temperature drift
±3 hPa tra -20…+60 °C
Differential Pressure
Sensor
range 1...4: Piezoresistive
range 5: Thermal mass flow sensing element
Measuring range
According to the model:
range 1
range 2
range 3
range 4
range 5
±2.5 hPa
±10 hPa
±100 hPa ±2000 hPa ±125 Pa
Resolution (instrument)
0.001 hPa
0.005 hPa
0.05 hPa
1 hPa
0.01 Pa
Accuracy
range 1...4: ± 1% f.s.
range 5: ± 3% of reading, ± 0.1 Pa @ 0 Pa
over the entire compensated temperature range (0…50 °C)
Connection
Tube Ø 5 mm. In the model r5 it is recommended to use tubes
with at least 5 mm internal diameter.
Carbon Monoxide (CO)
Sensor
Electrochemical cell
Measuring range
0 … 500 ppm
Resolution (instrument)
1 ppm
Accuracy
± (3 ppm + 3% of measurement)
Operating temperature
-5…50
°C
Response time
T
90
< 50
s
Stability
5% of measurement /year
Sensor life
> 5 years in normal environmental conditions
Carbon Dioxide (CO
2
)
Sensor
Non-dispersive infrared rays (NDIR)
Measuring range
0…5000 ppm
Resolution (instrument)
1 ppm
Accuracy
±
(50 ppm + 3% of measurement) @ 20
°C and 1013
hPa
Operating temperature
-5…50
°C
Response time
T
90
< 120
s (air speed= 2
m/s)
Stability
5% of measurement/5 years
Temperature drift
0.1% f.s. / °C
UVA Irradiance
Sensor
Photodiode
Measuring range
0…10,000 mW/m
2
Resolution (instrument)
1 mW/m
2
(0...2,000 mW/m
2
), 5 mW/m
2
(> 2,000... mW/m
2
)
Spectral range
UVA, peak
≅
360 nm
Spectral response
See graph 2
Calibration uncertainty
<5%
f
2
(response as cosine law)
<6%
f
3
(linearity)
<1%
f
4
(instrument reading error)
±
1 digit
f
5
(fatigue)
<0.5%
One year drift
<2%
Operating temperature
0…50
°
C
Summary of Contents for HD35AP series
Page 120: ...HD35 120 V1 12 HD35EDLM TC...
Page 141: ...NOTES...
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