H2-TCD I2C-I

Features:

• Detection of hydrogen levels in nitrogen up to 100 vol-%

• Fast response and recovery times

• Negligible humidity-induced base line drift

• Applicable in relative humidity (rh) between 0 % to 100 %

• Industrial temperature range -40 °C to +85 °C

• Linear output

H2-TCD I2C-I is a hydrogen sensor for applications without oxygen and is based on a thermal conductivity operation principle. The sensor contains on-board electronics, including the voltage sources for the heated transducers and the Wheatstone bridge. In addition, a programmable gain amplifier, a 16-bit analog-to-digital converter, a rheostat, a  1 K bit EEPROM, and a digital temperature  sensor are key component of the sensor. It is designed for use in a variety of applications which require an accurate hydrogen determination in nitrogen or other non oxygen-containing atmospheres.  

Pin 9*   +6 V Supply voltage of 

internal electronics. *   

Pin 7   Ground of the heaters, 

Wheatstone bridge and I2C bus.* 

Pin 3   SCL line of I2C bus.*

Pin 8   SDA line of I2C bus.*  



*Required connections (bold)