Humidity module textile filter
Humidity module textile filter
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Micro heater for up to 400 °C
Micro heater for up to 400 °C
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Humidity module, compact and pressure-tight

Digital RH/T module, in a 16 bar pressure tight TO housing
Digital humidity and temperature module in standard TO39 housing with glass sealed wires and a meshed steel filter

Product Name

HYT 939P

Operating humidity range

0 % RH to 100 % RH

Operating temperature range

-40 °C to +125 °C

Accuracy humidity

± 1.8 % RH at + 23 °C

Accuracy temperature

±0.2 °C

Digital interface

I²C, default address 0x28

Operating voltage

2.7 V to 5.5 V

Current consumption

< 1µA in sleep mode, < 22µA at 1Hz measuring rate

Dimensions

9 mm x 5.2 mm (ØxH)

Connections

TO-39, 4 wires

Wire dimensions

13.5 x 0.45 mm (LxØ)

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Datasheet
Application Note

Description

  • Benefits and Characteristics of the HYT 939

    Mechanically robust and with a chemical and condensed waterproof sensing area, the digital our HYT 939 humidity module excels with the special robust construction, withstanding peak loading at high temperatures. The HYT 939 is also ideal for high-pressure applications and is also offered with a pressure tight packaging. Precisely calibrated, the HYT 939 delivers an accuracy of ±1.8 % RH and ±0.2 °C and combines the advantages of a precise, capacitive polymer humidity sensor with the high integration density and functionality of an ASIC. The digital software integrated in the module processes the measured data and delivers the physical parameters of relative humidity and temperature over the I²C-compatible interface as digital values. The HYT 939 humidity module is therefore fully interchangeable without adjustment, and both the linearity error as well as temperature drift are corrected “on-chip” through computation, resulting in an outstanding accuracy over a wide range of applications.

    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

  • Option: High-end humidity calibration HYT modules

    With the development of a high end humidity calibration and measurement set up, the HYT sensor family boasts the accuracy of up to +/- 1.4 % RH and sets new standards for moisture measurement with low hysteresis and easy plug-and-play interchangeability.

    Our three HYT models can be ordered with a tailored calibration, which allows an accuracy of higher than +/- 1.4 % RH when used in combination with a limited range of 0-50 % RH. For dew point applications measuring in the range of 0-5 % RH, you can even reach an accuracy of < +/- 0.5 % RH.