H2-CNI 0-10V-I
Features:
• Accurate detection of hydrogen levels up to 100% LEL with 100 ppm resolution in air
• 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 %
• Industrial temperature range from -40 to +80 °C
• High mechanical stability
• Linear output up to 100 % LEL
• On-board instrumentation amplifier and voltage output
• I2C connectivity for sensor adjustment
• Supply voltage with reversed bias protection
• Designed for many years of operation time
H2-CNI 0-10V-I is a pin compatible replacement of previous models H2-CNI-0V-I, H2-CNI 0V-I ULTD, H2-CNI 0V WR sensors. It is a precise 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 on-board electronics to reduce the effect of ambient temperature changes on hydrogen sensitivity and to provide appropriate output signals. It is equipped with an additional I2C bus socket and a 0-10V output (like H2-CNI 0V WR). It is designed for use in a variety of applications which require accurate hydrogen determination in air. The sensor can be operated without connecting the I2C bus.
Pin 1 (red marking) +12 V positive supply voltage with respect to ground
Pin 2 Sensor signal with respect to ground
Pin 3 Ground of the internal electronics. The pin is electrically not connected to the housing
SCL Serial clock line of I2C bus, referenced to ground (pin 3)*
SDA Serial data line of I2C bus, referenced to ground (pin 3)*
*The sensor can be operated without connecting the I2C
bus. If connected, provide necessary pull-up resistors to
SCL and SDA (e.g. 4.7 kOhm).