Rotronic HC2A-S3: Standard Meteo Probe

The HC2A-S3 is the most versatile probe from ROTRONIC and forms the basis of the product portfolio. It measures humidity and temperature and calculates the dew/frost point.

Features include outstanding accuracy and repeatability with long-term stability. The probe features advanced housing construction and is available with interchangeable sensors. The device is hot-swappable without requiring calibration adjustments due to its digital interface compatibility with Rotronic devices.

The smart electronics are based on Rotronic's AirChip3000 technology, which calculates dew/frost point, generates alarms, and saves adjustment data for probe interchangeability. The system offers user-scalable analog output signals and digital UART interface for rapid integration with HygroClip2 devices or OEM applications.

Key Features: Outstanding accuracy and repeatability with long-term stability Interchangeable sensors — hot-swappable without recalibration AirChip3000 smart electronics Dew/frost point calculation and alarm generation User-scalable analog output signals Digital UART interface Compatible with HygroClip2 devices and OEM applications

Specifications: Accuracy (Standard): ±0.8 %RH / ±0.1 K at 10–30 °C Accuracy (High Precision): ±0.5 %RH / ±0.1 K at 10–30 °C Operating Range: -50–100 °C / 0–100 %rh Humidity Sensor: Hygromer HT-1 Temperature Sensor: PT100 1/3 DIN Class B Response Time (t63): <15 sec Long-term Stability: <1 %rh / year Power: 3.3–5 VDC / 4.5 mA at 3.3 VDC Analog Outputs: 2 x 0–1 VDC (user scalable) Digital Output: UART Dimensions: Ø15 x 108 mm Weight: 17 g Max Cable Length: 5 m passive / 100 m active Enclosure: Polycarbonate Probe Material: PEEK