Delta OHM HD35AP series, Operating Manual

Page: 88 / 146

HD35
- 88 -
V1.12
Atmospheric pressure
Sensor
Piezoresistive
Measurement range 300…1100 hPa
Resolution (of 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
Solar radiation
Sensor
Thermopile
Measuring range 0…2000 W/m 2
Resolution (of the instrument) 1 W/m
2
Sensitivity Configurable in mV/(kW m -2 )
For the other characteristics, please refer to the data sheet of the chosen pyranometer. The instrument
also displays the mV signal of the pyranometer.
Rainfall quantity
Sensor
Tipping bucket with NC or NO configurable contact
Resolution (of the instrument) Configurable 0.1 – 0.2 – 0.5 mm/tipping
For the other characteristics, please refer to the data sheet of the chosen rain gauge.
Level
Sensor
Sensor of pressure relative to the atmosphere
Pressure measuring range 0…1 bar
Level measuring range Depends on the fluid density (configurable via software)
For water: 0…10 m approx.
Resolution (of the instrument) 1 hPa / 0,01 m (for water)
Accuracy ± 0.8% f.s. @ 25 °C
Leaf wetness
Sensor
Capacitive
Measuring range 0…100% of leaf area wetness
Resolution (of the instrument) 0.1%
Accuracy (@ 23 °C)
±
5 %
Sensor working temperature -30…+60 °C
Soil volumetric water content
Measuring principle
Capacitive
Measuring range 0…60% VWC (Volumetric Water Content)
Resolution (of the instrument) 0.1%
Accuracy
±
3 % between 0 and 50% VWC (standard mineral soil up to 5 mS/cm)
Sensor working temperature -40…+60 °C
Carbon Dioxide (CO
2
)
Sensor Non-dispersive infrared rays (NDIR)
Measuring range B: 0…5,000 ppm / B2: 0…10,000 ppm
Resolution (instrument) 1 ppm
Accuracy
±
(50 ppm + 3% of measurement) @ 20 °C and 1013 hPa
Operating temperature -20…60 °C
Response time T
90
< 120 s (air speed= 2 m/s)
Stability 5% of measurement/5 years
Temperature drift 1 ppm / °C