HygroVUE5 HygroVUE™5 Sensor für Lufttemperatur und relative Luftfeuchte
Designed für allgemeine meteorologische Messungen
wetter  wasser  energie  gas flux and turbulence  bauwerke  boden

Überblick

Der HygroVUE™5 Sensor für Temperatur und relative Luftfeuchte für allgemeine meteorologische Anwendungen entworfen Er gibt ein SDI-12 Signal aus und kann damit mit allen SDI-12 -fähigen Geräten verwendet werden, natürlich auch mit unseren Datenloggern. Das Sensorelement kann einfach im Feld getauscht werden, so dass der Sensor nicht mehr zur Rekalibrierung eingeschickt werden muss. 

Der HygroVUE™5 passt in einen kleinen Strahlungsschutz wie den RAD06. 

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Funktionen und Vorteile

  • Verwendet kombiniertes, vorkalibriertes Sensorelement für Temperatur und Luftfeuchte
  • Sensorelement kann im Feld getauscht werden für einfache Rekalibrierung
  • Digitale SDI-12 Ausgabe
  • Simple Programmierung des Datenloggers
  • Geringer Stromverbrauch
  • Großer Bereich für Versorgungsspannung
  • Robustes Design mit eingegossener elektronik
  • Kompakt, für kleinen Strahlungsschutz

Bilder

Technische Beschreibung

The HygroVUE™5 sensor has a user-replaceable chip element that incorporates both a temperature sensor and an RH sensor. Each element is individually calibrated with the calibration corrections stored on the chip.

Electronics within the HygroVUE™5 control the measurement made by the sensor element, apply temperature and linearization corrections to the readings, and present the data via SDI-12 to a data logger.

A stainless-steel mesh filter minimizes the effects of dust and dirt on the sensor, while allowing air exchange around the sensor element and reducing the chance that condensation remains inside the filter cap. A small PTFE membrane filter is bonded to the surface of the element, which prevents any finer dust or mold from directly influencing the measurement.

The sensor housing is designed to withstand permanent exposure to all weather. It fits into a range of radiation shields, including compact shields such as the RAD06 6-Plate Solar Radiation Shield.

For improved reliability, the sensor is factory fitted with a fixed length of cable, and the sensor body is then potted to completely seal the electronics and cable joint. A range of cable lengths is available.

Spezifikationen

Sensing Element SHT35 derivative (specially coated for reliability)
Calibration Traceability NIST and NPL standards
Supply Voltage 7 to 28 Vdc
Warm-up Time Sensor is normally powered all the time. If power is switched off, allow 1.8 s for sensor to power up.
Main Housing Material White PET-P
Housing Classification IP67 (electronics housing)
Sensor Protection Outer glass-filled polypropylene cap fitted with a stainless-steel mesh dust filter with nominal pore size of < 30 µm. The sensor element is fitted with a PTFE protective film with a filtration efficiency of > 99.99% for particles of 200 nm or larger size.
EMC Compliance Tested and conforms to IEC61326:2013
Calibration The sensor element is individually calibrated during manufacture.
Field-Replaceable Chip or Recalibrate Field-replaceable chip
Diameter 12.5 mm (0.49 in) at sensor tip, maximum 16 mm (0.63 in) at the cable end
Length 115 mm (4.52 in) sensor only, without cable

Maximum Current Drain

Quiescent 50 μA typical
During Measurement 0.6 mA (takes 0.5 s) typical

Air Temperature

Measurement Range -40 to +70°C
Accuracy
  • ±0.4°C (over the range -40 to +70°C)
  • ±0.3°C (over the range 20 to 60°C)
Long-Term Drift < ±0.03°C per year
Reported Resolution 0.001°C
Repeatability 0.04°C Values are 3 standard deviations of 25 measurements at constant temperature.
Response Time 130 s (63% response time in air moving at 1 m/s)
Units Degrees Celsius

Relative Humidity

Measurement Range 0 to 100% RH
Accuracy
  • ±1.8% (at 25°C, over the range 0 to 80% RH)
  • ±3% (at 25°C, over the range 80 to 100% RH)
Additional Errors at Other Temperatures < ±1% RH (over -40 to +60°C)
Short-Term Hysteresis < ±1% RH
Long-Term Stability ±0.5% per year (maximum drift in clean air conditions)
Reported Resolution 0.001% RH
Repeatibility 0.05% RH Values are 3 standard deviations of 25 measurements at constant humidity.
Response Time with Filter 8 s (63% response time in air moving at 1 m/s at 25°C)

Kompatibel mit

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Datenlogger

Product Compatible Note
CR1000 (retired)
CR1000X
CR200X (retired)
CR300
CR3000
CR3000
CR3000
CR6
CR800
CR850
CR850

Miscellaneous

Product Compatible Note
CR310

Additional Compatibility Information

Digital SDI-12 output which is fully SDI-12 V1.3 compliant (verified with an SDI-12 Verifier (www.sdi-12-verifier.com/). It is compatible with SDI-12 V1.4 recorders.