HC2-S Ambient Air Probe

 For Indicators Transmitters or Data Loggers

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The HC2-S / HC2-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.


  • Accuracy: ±0.8 %RH, ±0.1 K, at 23 °C ±5 K
  • Range of application: -50â¦100 °C / 0â¦100 %RH
  • Digital interface (UART) and scalable analog outputs, 0â¦1 V
  • Standard output scaling: 0â¦1 V = -40â¦60 °C / 0â¦100 %RH
  • Adjusted at 23 °C and 10, 35, 80 %RH
Probe type Standard probe
Dimensions 15 x 82 mm
Operating range electronics -50…100 °C / 0…100 %RH
Accuracy at 23 ±5 °C ±0.8 %RH / ±0.1 K
Accuracy w. adjustment profile "standard" at 23 °C / 10, 35, 80 %RH ± 0.8 %RH / ± 0.1 K
Power supply / Power consumption 3.2…5 VDC ±0 % / < 4.5 mA
Current consumption 4.5 mA at 3.3 VDC
Long-term sensor stability <1 %RH / year
Humidity sensor Hygromer IN-1
Temperature sensor Pt100 Class A
Probe protection Polycarbonate plastic cage, black
Filter cartridge Polyethylene
Filter type Wire mesh filter
Response time t 63 <15 sec.
Allowed wind speed 20 m/s, with filter
Psychrometric calculations Dew or frost point
Reproducibility Airchip <0.02 %RH / 0.01 K
Exploitation software ROTRONIC HW4.2
Probe adjustment by software 1 Point & multipoint %RH & °C
Firmware update With internet and HW4 software
User information from Software HW4 (devicemanager)
Data processing via HW4 with interface cables
Device Protection by password Yes
Type of output signals 2 x 0…1 VDC
Analog outputs scaleable by the user Yes
Analog output signal (standard) 0…1 V = 0…100 %RH; 0…1 V = -40…60 °C
Digital output signal (standard) UART
Service Interface UART
Reverse voltage protection Mechanically in the connector
Max. cable length service cable 5m
Probe material PEEK
Enclosure material Polycarbonate
Housing Polycarbonate
FDA/GAMP compatibility FDA 21 CFR Part 11 and GAMP compatible

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