- SGS™ -



Integrated thermal conductivity sampling system

The SGS™ – Single-Gas Sensor measures Hydrogen content with high accuracy in binary or quasi-binary process atmospheres. The SGS™ has a low-maintenance requirement and long service life, and eliminates the need for heated sample lines, filters, etc. The SGS™ can be used stand alone or integrated into a new or existing control system.

Ideal for measuring hydrogen content or dissociation level with high accuracy in nitriding and nitrocarburizing atmospheres, the SGS™ is also capable of calculating KN and KC for controlled nitriding and nitrocarburizing.

The integral sampling system eliminates the need for a separate external system. This one-piece SGS™ sensor is mounted directly to the process exhaust line or to a sample port and uses the Venturi effect to sample the atmosphere.


  • Integral sampling eliminates need for a separate sampling system
  • Sampling flow is generated by Venturi effect using either process atmosphere or exhaust gases, depending on the installation location of the sensor
  • Sensing block and electronics embedded in the same enclosure
  • Integrated web server with access to diagnostics, configuration, and maintenance
  • Optional calculation of nitriding and carbon potential for nitriding and nitrocarburizing
  • Analog signals and industrial protocols available
  • O2 sensor and O2 sensor temperature inputs available
  • Accuracy: +/- 0.6% of reading plus +/- 0.4% of full scale
  • Linearity: < 0.5% of full scale
  • Repeatability: < 0.5% of full scale
  • Zero Drift: < 0.5% of full scale per month Sampling Flow: 0.05 to 0.5 lpm / (0.1 to 1 cfh) not controlled Atm. Flow Speed: 0.1 – 60 m/sec (0.3 to 200 ft/sec) Response Time: 95% in 60 sec @ 0.2 lpm / (0.4 cfh) Power Requirements: 24VDC, 1.5 Amps max.
  • Input/Outputs: 2x analog OUT, sourcing, isolated; 4 – 20 mA (R
  • Working Pressure: ambient +/- 35 mbar (0.5PSI)
    Can be used in an equipment with vacuum purge (no measurement in vacuum)
  • plus Process connection: KF25 flange