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HMC03M（用于無線電探空儀和氣象氣球濕度傳感器）詳見產品規格書

HMC03M Heated Humidity Sensor for Radiosondes and Weather Balloons

HMC03M is optimized for short RH response time even at very
low temperature in the upper atmosphere. It combines on a silicon
substrate a capacitive relative humidity (RH) sensor and a heating
resistor (heater).
The heater is dedicated for fast recovery of the humidity sensor
after condensation or icing. The construction with the heater
positioned all around the RH sensor grants uniform temperature
throughout the HMC03M structure, which leads to outstanding
measuring performance in high-end weather observation.

Features：

Very short RH response time at low T
High sensitivity
Fast recovery after condensation or icing due to sensor heating
High accuracy thanks to outstanding T uniformity within HMC03M

Technical Data

Humidity sensor

Humidity sensor
Nominal capacitance C0 (at 30 °C / 86 °F) 120 ± 40 pF
Sensitivity 0.41 pF / % RH
Working range humidity 0...100 % RH
temperature -80...60 °C (-112...140 °F)
Linearity error (0...98 % RH) < ± 2 % RH
Hysteresis 1.9 ± 0.25 % RH

Temperature dependence1) dC = -0.0014*RH*(T-30 °C) [pF]
Loss tangent < 0.05
Supply voltage 5 V max (UPP)
DC voltage < 5 mV
Operating frequency 10...100 kHz, recommended 20 kHz