Data Sheet

HYGROCHIP

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DIGITAL HUMIDITY SENSOR HYT-939

Characteristic Features

 Measuring range 0 .. 100% rH, -40 … 125°C

 I

C protocol for humidity and temperature

(address 0x28 or alternative address)

 Accuracy ±1.8% rH, ±0.2°C

 Temperature compensated

Typical Areas of Application

 Medical systems

 Autoclaves

 Pressure dew point measurement (pressure

tight sensor packaging required)

 Drying systems

 Laboratories

Features

HYT 939

Precisely calibrated, the HYT 939 delivers an accu-

racy of ±1.8% rH and ±0.2°C. Further features are

the integrated signal processing for measuring the

physical parameters of relative humidity and tem-

perature, the I

C compatible interface, easy inter-

changeability without adjustment as well as me-

chanical robustness, chemical resistance, dew

formation resistance and long-term stability.

Both the linearity error and temperature drift are

corrected “OnChip” through computation.

Because of the special robust construction, the

sensor also withstands peak loading at high tem-

peratures. Therefore, this special model is also

ideal for extremely sophisticated industrial applica-

tions in drying systems and suitable for medical

systems.

For a pressure tight sensor packaging consult IST

AG.

Further variants and the full spectrum of the

HYGROCHIP product series can be found at: