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Humidity

Humidity Sensor, digital and analog to measure air and soil moisture

Combined Temperature/Humidity Sensor in Shelter

TF32

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.

 

  • Technical Specification
  • Variations
  • 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)
  • note 3033.0000Combined Temperature/Humidity Sensor in Shelter, incl. 5 m connection cable
  • note 3033.0200with measuring converter 4...20 mA, incl. 5 m connection cable
  • note 3033.1000shelter electrically aspirated 12 VDC, incl. 5 m connection cable
  • note 3033.1200shelter electrically aspirated 12 VDC, with measuring converter 4...20 mA, incl. 5 m connection cable
  • note 3033.2000shelter electrically aspirated 24 VDC, incl. 5 m connection cable
  • note 3033.2200shelter electrically aspirated 24 VDC, with measuring converter 4...20 mA, incl. 5 m connection cable
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Combined Temperature/Humidity Sensor in Shelter

P30

The sensors are protected by the shelter and are ventilated constantly. The measuring converter is placed below the shelter.

Temperature and Humidity Sensor on a crossarm

P30311

3033 Mounting

3033Anschlussmae

Mounting plate