Combined Temperature/Humidity Sensor in Shelter

The Sensor is used for measurement of the rel. humidity and the air temperature. A capacitive measuring element is used for the measurement of the rel. humidity and Pt 100 is used for the measurement of the air temperature.

Both sensors are located in a measuring probe, protected by a membrane filter. The measuring probe is built in a radiation protection shelter out of a defined white colored plastic.

There is also an electrically ventilated version availabel for measurement of the exact temperature if there is no wind.

Specifications

  • HUMIDITY SENSOR:
  • Measuring element:capacitive
  • Measuring range:0…100 % rH
  • Measuring accuracy:±1.5 % (10…90 % rH at 23°C)
    ±2 % (<10 % rH >90 % rH)
  • Temperature influence TK:<0,05 % rH/K (at 23 °C)
  • Calibrating accuracy:±1 % rH
  • Max. annual drift:1 % rH / year
  • Time constant:0.7 s
  • Output:0…1 V corresp. 0…100 % rH
  • Impedance:>10 kΩ
  • Response time:T90: <1.5 min.
  • :
  • TEMPERATURE SENSOR:
  • Measuring element:Pt 100 1/3-DIN class B
    (acc. DIN IEC 751)
  • Measuring range:-40…+60°C
  • Accuracy (active output):±0.2 K (at 23 °C)
  • Temperature influence TK (active output):<0.005 K/K (at 23 °C)
  • Output:Measuring resistance Pt 100, 4 line
  • :
  • GENERAL:
  • Material of probe:ABS-plastic
  • Compliances:WMO Guide No. 8/7th ed.
  • Power supply:5…30 VDC, < 4 mA
    (without electrical ventilation)
  • Operating temperature range:-40…+75°C
  • Min. wind speed at sensor head:0.5 m/s
  • Protection, probe:IP30
  • Protection, connector:IP67
  • Power requirement 0…10 V/0…1 V:< 3 mA
  • Load resistance 0…10 V/0…1 V:≥ 10 kΩ / ≥ 2 kΩ
  • EMC according:EN 61326-2-3
  • Dimensions (shelter):∅ 120 mm,
    height approx. 192 mm
  • Weight (shelter with holder):approx. 780 g
  • :
  • FAN:
  • Versions 3033.1XXX:12 VDC, approx. 70 mA
  • Versions 3033.2XXX:24 VDC, approx. 33 mA
  • :
  • MEASURING CONVERTER:
  • Input:Voltage: 0…1,0 V; meas. range.: 0…100 %
    Pt 100, meas. range: -35…+45 °C
  • Output:4…20 mA; supply 10…35 VDC,
    load depending (500 Ω…1,9 kΩ)
  • Max. error:± 0.25 %
  • Error by:Supply voltage: < 50 ppm/V
    Ambient temp.: < 50 ppm/°C
  • EMV, Emission:EN 50081-1
  • EMV, Noise:EN 50082-2
  • Connection:8-p. connector, IP67 sealed
    (plugged)

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