Starting at $4,745.00
  • Usually ships in 10-12 weeks



  • Air, Ar, CH4, CO2, H2, He, or N2 measured gases
  • Selectable from 0-5% up to 90-100% measurement ranges
  • ±2% accuracy
  • Two 4–20 mA outputs
  • Two alarm relays for concentration
  • MODBUS RTU over RS485 protocol
  • IP55 rated housing


The Michell Instruments XTC501 thermal conductivity analyzer is a lightweight and compact binary gas analyzer for measuring gas mixtures such as air in argon or carbon dioxide in air. Suitable for installation in safe areas, the XTC501 has a IP55-rated housing.

The sensor design largely eliminates drift associated with other comparable devices, improving the stability of the measurement. This allows longer calibration intervals and reduces both labor and consumable costs.

The non-depleting thermal conductivity sensor has no moving parts, and is therefore not affected by vibration or movement. This makes it suitable for remote and offshore installations.

Applications for the XTC501 include:

  • Hydrogen coolant in electricity turbines
  • Hydrogen generation by electrolysis
  • Product quality in air separation plants
  • Syngas production
  • Helium recovery
  • Fuel cell research
  • Product quality such as air in argon for double glazing