FES Sensor Technology Hydrogen-Sensor H2-CNI I2C-E-ULTD

H2-CNI I2C-E-ULTD is a calorimetric hydrogen sensor with a catalytically highly active and siloxane-resistant sensor element and is based on a non-isothermal calorimetric operation principle. It contains a digital temperature sensor and an EEPROM for an advanced control of sensor characteristics in a wide temperature range of -40 to +120°C. As a result of highprecision
adjustment, the thermal drift of the zero-signal is very small.


  • Detection of hydrogen levels up to 100% LEL with 0.25 % resolution in air
  • Extended temperature range from -40 °C to +120 °C
  • Ultralow thermal drift
  • No sensitivity against typical catalyst poisons such as volatile siloxanes and carbon monoxide
  • Fast response and recovery times
  • No humidity-induced base line drift
  • Applicable in relative humidity (rh) between 0 % to 100 %
  • Linear output up to 100 % LEL
  • No cross-sensitivity against hydrocarbons such as methane and ethane
  • On-board digital temperature sensor and EEPROM with I2C®bus connectivity

Documents & downloads

Specification Sheet H2-CNI I2C-E-ULTD Rev. 1.0
Christian Kallen
Christian Kallen
Account Manager
cka@alders.de +49 2152 8955-230