Heated Humidity Sensor for Radiosondes and Weather Balloons - HMC03M

? Nominal capacitance: 120 ± 40 pF
? Sensitivity: 0.41 pF / % RH
? Working humidity range: 0~100 % RH
? Working temperature range: -80~60 °C (-112~140 °F)
? Linearity error (0~98 % RH): < ± 2 % RH
? Hysteresis: 1.9 ± 0.25 % RH
? Supply voltage: 5 V max (UPP)

  • Model Number: HMC03M
  • Data Sheet: Date Sheet File
Quantity:
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  • Heated Humidity Sensor for Radiosondes and Weather Balloons
  • Heated Humidity Sensor for Radiosondes and Weather Balloons
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Product Specification

HMC03M Heated Humidity Sensor Description
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.

HMC03M Heated Humidity Sensor 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

HMC03M Heated Humidity Sensor Technical Data

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 dependence
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
Heater (Molybdenum)
Nominal resistance R0
100 ± 20 Ohm
Temperature coefficient
3100 ± 150 ppm/K
Self heating coefficient (SHC), typical (at 980 hPa)
    5 m/s
    1 m/s
    0.1 m/s

0.11 K/mW  
0.18 K/mW
0.39 K/mW
Max. power 
100 mW

HMC03M Heated Humidity Sensor Ordering Guide
Type Packaging (tape and reel)
HMC03M
500 sensors
(TR0,5)
1000 sensors
(TR1)
2500 sensors
(TR2,5)

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