H2-CNI I2C-I FWB-A
High-precision, maintenance-free hydrogen detection
H2-CNI I2C-I FWB-A
High-precision, maintenance-free hydrogen detection
The H2-CNI I2C-I FWB-A is an advanced, industrial-grade hydrogen sensor that contains the entire electronic circuitry for control and read-out through the I2C digital bus. Built on a catalytically highly active, siloxane-resistant element operating on a non-isothermal calorimetric principle, this sensor delivers consistent performance from lab environments to real-world deployment.
The H2-CNI I2C-I FWB-A is an advanced, industrial-grade hydrogen sensor that contains the entire electronic circuitry for control and read-out through the I2C digital bus. Built on a catalytically highly active, siloxane-resistant element operating on a non-isothermal calorimetric principle, this sensor delivers consistent performance from lab environments to real-world deployment.
Key Features & Benefits
- Accurate measurement up to 12 vol-%
Detects hydrogen in air with 100 ppm resolution
Linear response curve 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 +85°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 100 ppm resolution
- Linear response curve 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 +85°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 1
Midpoint of the 2nd branch of the Wheatstone bridge (can remain unconnected)
Pin 3
Clock line of I2C bus
Pin 4
Bridge excitation voltage connected to 1st junction of the active sensing element, can be connected to VPOW if a single supply voltage is used (FWB-B only). Otherwise, a positive voltage with respect to AGND must be applied. Leave unconnected for FWB-A sensors.
Pin 5
Junction between active sensor element and reference element (can remain unconnected)
Pin 6
1st junction of reference element, must be connected to AGND
Pin 7
I2C ground
Pin 8
Data line of I2C bus
Pin 9
Supply voltage of internal electronics
Pin 1
Midpoint of the 2nd branch of the Wheatstone bridge (can remanin unconnected)
Pin 3
Clock line of I2C bus
Pin 4
Bridge excitation voltage connected to 1st junction of the active sensing element, can be connected to VPOW if a single supply voltage is used (FWB-B only). Otherwise, a positive voltage with respect to AGND must be applied. Leave unconnected for FWB-A sensors.
Pin 5
Junction between active sensor element and reference element (can remain unconnected)
Pin 6
1st junction of reference element, must be connected to AGND
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
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!
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