Eaton MTL

MTL Instruments Group


K522 - Thermal Conductivity (TCD) Gas Sensor for Hydrogen (H2), Helium (He), Argon(Ar) applications

The K522 OEM analyser is a DIN rail mounted instrument consisting of an electronics module and a remote flame proof Katharometer sensor. To complete the measurement system a suitable sampling system, gassing cap, Junction box and cable are required. The K522 is suitable for measuring Hydrogen, Helium, Nitrogen or Argon in binary or pseudo-binary gas mixtures.

  • Proven TCD technology from gas analyser experts
  • Non-depleting, long life sensor
  • Temperature compensated
  • Atex certified remote sensor


  • Measure Hydrogen (H2), Helium (He), Argon (Ar) and other gases.
  • Range 0 to 10% or 0 to 100% depending on gas type
  • Remote ATEX certified sensor
  • RS 232 and 4 to 20 mA outputs
  • LabVIEW based interface software
  • 24 V dc supply
  • Temperature compensated 0 to +55°C


  • Gas mixing
  • Hydrogen Generators
  • Helium recovery systems
  • Insulated glass (IG) filling

For Product certificates

Product Code Description Downloads

intrinsically safe logo Symbol denotes that the equipment is suitable for use in hazardous area applications.
fsm logo Symbol denotes that the product has been assessed for functional safety applications

K522   K522 Thermal Conductivity (TCD) Gas Sensor File