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Heated Humidity Sensor for Radiosondes

HMC03M

HMC03M is optimized for short response time even at very low temperature in the upper atmosphere. It combines on a silicon substrate a capacitive relative humidity sensor and a heating resistor (heater).

Heated Humidity Sensor for Radiosondes
Key Features
Technical data

Key Features

  • Very short response time even at low temperature
  • Fast recovery after condensation or icing due to sensor heating
  • High sensitivity and outstanding linearity

Technical data

Nominal capacitance C0 (at 30 °C / 86 °F)
120 ± 40 pF
Sensitivity (for C0 = 120 pF, in average)
0.41 pF / % RH
Response time t63 (see Graph for details)
< 8 sec. at -30 °C (-22 °F)
< 11 sec. at -40 °C (-40 °F)
Working range temperature
-80…60 °C (-112…140 °F)
Working range humidity
0…100 % RH