H2 SENSOR KIT-030-040

H2 sensor kit for GC oven

This H2-SENSOR Kit is a security system that constantly detects the amount of Hydrogen present in the GC’s oven and blocks the Hydrogen generation if it detects an amount greater than the safety threshold.

The 6940.00.055 controller reads the percentage of Hydrogen measured by the sensor 6940.00.070 and, if the value exceeds the threshold alarm, the Controller deactivates the solenoid valve in the 6940.00.056 block. The alarm can be signaled to a PC and to a remote device.

Sensor 6940.00.070 is engineered to work in standalone mode connected by RS-485 network to a Hydrogen Generator. The sensor can be connected directly with the LNI Hydrogen Generators. When the hydrogen concentration detected exceeds a threshold of safety, the Hydrogen Generator automatically stops the production and audible and visual alarms will be reported.

Hydrogen sensor kit

Product features

  • Continuous monitoring of the working environment
  • Compatible with all GCs
  • Simple installation
  • Simple calibration
  • Acoustic and optical alarms
  • Potential explosion risks eliminated
  • Low operating costs

Main applications

  • GC’s oven
  • All environments where Hydrogen is used

Technical specifications



Power Supply Voltage 12 VDC +/- 5%
Power Supply Current 0.8 A use with OPT.H2.SENS.VB.V2
Valve output Open collector


Ambient temperature 5-35°C (41-95°F)
Ambient Humidity (max, non condensing) 80% at 25°C (77°F)
IP rating IP20


Hydrogen Inlet pressure 1 to 9 bar
Inert Inlet pressure 1 to 10 bar
Pressure regulator 1 to 9 bar




Hydrogen Sensitivity Range 0.01% to 1.00% by hydrogen volume (25% LEL, Lower Explosion Limit)
Accuracy ± (5.0% of F.S. + 1000ppm)
Typical Response Time less than 20 sec
Power Supply Voltage From 9VDC to 28VDC
Communication port RS-485
Accuracy checking interval 1 year (suggested 180 days)
Hydrogen Sensor Technology Dioxide semiconductor
Product Life Expectancy 10 years
Body temperature range -10 °C to 40 °C

Information request

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Please contact us at info@lni-swissgas.eu or fill the form.

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