High-Precision Digital Humidity and Temperature Sensing Element

The digital humidity and temperature sensing element HTE501 offers an excellent measurement accuracy up to ± 1.8 % RH (incl. hysteresis) and ± 0.2 °C. The proven E+E sensor coating and the integrated constant current heater ensure a high level of reliability and durability of the sensing element even in harsh, dirty and condensing environments.

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High level of measurement accuracy, wide range of applications
The stated accuracy of the relative humidity measurement up to ±1.8 % (incl. hysteresis). Integrated hysteresis compensation ensures that the sensing element always keeps within its tolerance window, even when the humidity content rises or falls. With a temperature range of -40 °C to 135 °C, the HTE501 sensing element is suitable for a wide range of applications.

Suitable for demanding operating conditions
The active sensor surface is permanently protected against dirt and corrosive deposits by the proprietary E+E sensor coating. This special protective coating ensures excellent measurement performance and long-term stability even under demanding conditions. The sensing element can therefore be used in harsh environments without the need for additional protection.

The integrated constant current heater, which can be activated as required, keeps the sensing element at an excess temperature and thus prevents condensation and deposits caused by condensation.

Direct measured value output via I²C interface
The measured value output is based on the I²C data communication protocol. The measured values are available in 16 bit integer format and can be processed directly. In addition to the humidity and temperature values, the dew point is also calculated and output directly. 8 individually adjustable I²C addresses make it possible to operate several sensing elements on one I²C bus.

Simple design-in and evaluation kit
The DFN enclosure of the HTE501 measures only 2.5 x 2.5 x 0.9 mm. This makes the sensing element suitable for demanding designs and tight spaces. The integrated I²C pull-up resistors further facilitate design-in, as no external circuitry is required.

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Typical Applications

  • Building automation
  • Consumer electronics
  • Home appliances
  • Industrial automation
  • Medical devices
  • Smart home
  • Wearable devices
  • White goods

Key Features HTE501

  • Excellent measurement accuracy
  • E+E proprietary coating
  • Constant current heater
  • I²C interface with direct 16 bit integer output
  • 8-pin DFN package
  • I²C interface with pin-selectable addresses
  • Integrated I²C pull-up resistors
  • Dew point calculation
  • Excellent repeatability

Technical data HTE501

  • 0...100 % RH
    -40...135 °C (-40...275 °F)

    Measuring range
  • up to ±1.8 % RH (incl. hysteresis)
    up to ± 0.2 °C (0.36 °F)

  • I²C

    Digital interface
  • 2.35 - 3.6 V


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HTE501 Accessoires

  • HTE501 Eval Kit 1.0

    Evaluation Kit for digital Humidity Sensing Element HTE501

    The evaluation kit facilitates the evaluation and testing of the digital humidity and temperature sensor.

    The HTE501 Eval Kit 1.0 consists of:

    • USB Dongle with cable and plug for connecting the sensor to a PC.
    • HTE501 Humidity /Temperature sensor soldered on a test board.
    • Software to monitor and save the measured values.

    The cable, plug and test board can be exposed to temperatures from -40 to 125 °C (-40...257 °F).

    Datasheet for more information >>

    Suitable for Products:

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