HygroVue 5 Digital Temperature and Relative Humidity Sensor

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 availabl

Benefits and Features

• • Uses a combined, pre-calibrated digital humidity and temperature element
  • Field-changeable element for fast, on-site recalibration
  • Digital SDI-12 output, allowing long cables with no added errors
  • Simple data logger programming
  • Low power consumption
  • Wide operating voltage
  • Rugged design with potted electronics
  • Compact size for smaller radiation shields