H2-CNI I2C-E ULTD

High-precision, maintenance-free hydrogen detection

H2-CNI I2C-E ULTD

High-precision, maintenance-free hydrogen detection

In H2-CNI I2C-E ULTD both, the sensing and reference elements are connected to pins, thereby allowing direct measurement of the balance voltage of the Wheatstone bridge with an external amplifier.  Built on a catalytically highly active, siloxane-resistant sensing element and operating on a non-isothermal calorimetric principle, this sensor delivers consistent performance from lab environments to real-world deployment in an extended temperature regime.


In H2-CNI I2C-E ULTD both, the sensing and reference elements are connected to pins, thereby allowing direct measurement of the balance voltage of the Wheatstone bridge with an external amplifier.  Built on a catalytically highly active, siloxane-resistant sensing element and operating on a non-isothermal calorimetric principle, this sensor delivers consistent performance from lab environments to real-world deployment in an extended temperature regime.

Key Features & Benefits


  • Accurate measurement up to 12 vol-%


Detects hydrogen in air with 0.25% resolution

Linear response curve up to 100% LEL  for simplified calibration and reliable readouts



  • Unmatched environmental robustness


Resistant to valatile siloxanes and carbon monoxide - common catalyst poisons

No cross-sensitivity against hydrocarbons such as methane and ethane

Operates in 0% to 100% relative humidity without baseline drift

Temperature range -40°C to +120°C

Ultralow thermal drift



  • Fast, reversible reaction times

 

Enables rapid detection and clear recovery

Ideal for critical applications where reaction time matters



  • Engineered for longevity


No regular maintenance required

Designed for years stable, continuious operation 

Key Features & Benefits


Accurate measurement up to 12 vol-%


  • Detects hydrogen in air with 0.25% resolution
  • Linear response curve up to 100% LEL for simplified calibration and reliable readouts


Unmatched environmental robustness


  • Resistant to valatile siloxanes and carbon monoxide - common catalyst poisons
  • No cross-sensitivity against hydrocarbons such as methane and ethane
  • Operates in 0% to 100% relative humidity without baseline drift
  • Temperature range -40°C to +120°C
  • Ultralow thermal drift


Fast, reversible reaction times


  • Enables rapid detection and clear recovery
  • Ideal for critical applications where reaction time matters


Engineered for longevity


  • No regular maintenance required
  • Designed for years stable, continuious operation 


Pin Configuration

Pin Configuration

Pin 3

Clock line of I2C bus


Pin 4

Bridge excitation voltage connected to 1st junction of reference sensing element 


Pin 5

Junction between active sensor element and reference element


Pin 6

1st junction of sensing element 


Pin 7

I2C ground 


Pin 8

Data line of I2C bus


Pin 9

Supply voltage of internal electronics

Pin 3

Clock line of I2C bus


Pin 4

Bridge excitation voltage connected to 1st junction of reference sensing element 


Pin 5

Junction between active sensor element and reference element


Pin 6

1st junction of sensing element 


Pin 7

I2C ground 


Pin 8

Data line of I2C bus


Pin 9

Supply voltage of internal electronics

Evaluation kit

For full accecibility for your sensor

Evaluation kit

For full accecibility for your sensor

PrecVS-PGA-ADC 3.6

The evaluation kit enables controlled operation and signal analysis

PrecVS-PGA-ADC 3.6

The evaluation kit enables controlled operation and signal analysis

Need a custom solution?


We offer customization options on existing sensors as well as custom

development of completely new sensors or features.


Tell us about your needs and we'll get back to you!

Need a custom solution?


We offer customization options on existing sensors as well as custom

development of completely new sensors or features.


Tell us about your needs and we'll get back to you!