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.
Lesen Sie mehrFunktionen 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 |
|
| 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 |
|
| 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 | ||
| CR300 (retired) | ||
| CR3000 | ||
| CR310 | ||
| CR350 | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
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.