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Rotronic HC2-AW Water Activity Probe



For water activity measurements in bulk materials such as flour, grain, spices, etc. For solid and pasty products such as meat, sausage as well as oils, fats, etc.


  • On/Off switch
  • UART interface for direct connection to a PC
  • Power supply via UART interface
  • Adjusted at 23 °C and 10, 35, 80 %rh
  • For use with HygroLab C1, HP23-AW-A




Probe type Measurement probe with UART interface
Dimensions ø 68 x 60 mm
For use with HygroLab C1, HP23-AW-A
Range of application -40…85 °C (-40…185 °F) / 0…100 %RH
Accuracy at 23 ±5 °C ± 0.008 aw / 0.8 %rh / ±0.1 K
Power supply Via display instruments
Long-term stability <1 %rh / year
Humidity sensor HYGROMER® WA-1 / Pt-100, 1/3 DIN Class B
Temperature dependence 0.001 K/K, 0.0002 aw/K
Filter cartridge Wire mesh filter with 20…25 μm pore size
Response time t 63 <20 sec.
Psychrometric calculations Dew or frost point
Start-up time 1,5 s
Measurement interval 1 s
Aw-quick mode Yes
Communication interfaces UART
Material Stainless steel, aluminum
IP protection rating IP20
FDA / GAMP FDA 21 CFR part 11 / GAMP5
CE / EMC conform EMC 2008/108/EG


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