HMC03M

HMC03M

Heated Humidity Sensing Element for Radiosondes and Weather Balloons

HMC03M

HMC03M is optimised 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).

The heater is dedicated for fast recovery of the humidity sensor after condensation or icing. This leads to outstanding measuring performance in high-end weather observation.

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 humidity0…100 % RH
  • Linearity (0…98% RH)< ± 2 % RH

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

Datasheet

pdf HMC03M Datasheet

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