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Digital Humidity and Temperature Module - HYT 939

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• Calibrated and temperature compensated
• Excellent humidity/temperature accuracy and stability
• High chemical resistance
• I2C protocol (address 0x28 or alternative address)
• Wide humidity and temperature range (0 % RH to 100 % RH and -40 °C to +125 °C)

Model Number: HYT 939
Data Sheet:

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Product Specification

Further advantages of the HYT 939 digital humidity module include:

• Calibrated and temperature compensated

• Excellent humidity/temperature accuracy and stability

• High chemical resistance

• I2C protocol (address 0x28 or alternative address)

• Wide humidity and temperature range (0 % RH to 100 % RH and -40 °C to +125 °C)

• Very low drift

• Very stable at high humidity

• Interchangeable without adjustments

• Pressure-resistant version (up to 16 bar) upon request

The digital HYT 939 humidity module is suitable for various medical systems, autoclaves, pressure dew point measurement (pressure tight packaging required), drying systems and laboratory applications.

Technical Data:

Operating temperature range	-40℃ to +125℃
Operating humidity range	0 % RH to 100 % RH
Hysteresis	< ±1 % RH
Linearity error	< ±1 % RH
Temperature error	0.05 % RH/K (0℃ to +60℃)
Operating voltage	2.7 V to 5.5 V
Current consumption (nominal)	< 22 µA at 1 Hz measuring rate; 850 µA max.
Current consumption (sleep)	< 1 µA
Digital interface	I²C, address 0x28 or alternative address
Operating voltage (limits)	-0.3 V to 6 V
Storage condition	-20℃ to +50℃
	Humidity	Temperature
Accuracy	±1.8 % RH at +23℃ (0 % RH to 90 % RH)	±0.2 K (0℃ to +60℃)
Reproducibility	±0.2 % RH	±0.1 K
Resolution	0.02 % RH	0.015℃
Response time t₆₃	< 10 s with metal mesh filter	< 10 s with metal mesh filter
Long-term drift	< 0.5 % RH/a (at +23℃ and 30 % RH to 70 % RH - laboratory conditions)	< 0.05 K/a
Measuring principle	Capacitive polymer humidity sensor	PTAT (integrated)