HTE301 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.

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.

Measuring range 0…100 % RH
-40…135 °C 
Accuracy up to ±1.8 % RH (incl. hysteresis)
up to ± 0.2 °C (0.36 °F)
Digital interface I²C
Supply 2.35 – 3.6 V