NitroCarb™ is a vacuum-tight oxygen sensor for nitrocarburizing processes. A fully gas-tight design coupled with low-temperature operation and a special sheath allow the NitroCarb™ to work in all FNC environments where other probes simply cannot.
The Inconel 600 Sheath is vented to prevent accumulated moisture during high dew point heat ups. The electrode design is tailored to nitrocarburizing temperatures up to 550 °C (1,022 °F). The probe also transmits a signal to the control instrumentation to calculate the Kc potential.



  • Ventilated sheath
  • Solid zirconia electrolyte
  • Vacuum-tight, sealed head
  • High-temperature alloy sheath
  • All stainless steel connection fittings



  • Capable of measuring and control of nitrocarburizing atmospheres when used in conjunction with H2Smart™ hydrogen analyzer
  • Measurement and control of pre- and post-oxidation processes
Output in a heat treating atmosphere 1,000 to 1,200 mV DC
MIN operating temp. 800 °F [425 °C]
MAX operating temp. 1,200 °F [650 °C]*SEE WARRANTY CARD*
Sensor head temp. 200 °F max.
Sensitivity 0.02 mV or .0025% C
Accuracy ±0.03% C
Stability ±1 mV over sensor life
Response time Less than 1 second
Impedance Less than 6 K ohm
Sensor construction Stabilized zirconia solid electrolyte, patented alloy electrode
Thermal shock Caution is advised, obey installation and removal procedures
Sensor Life About 2 years with normal use
Warranty 1 year usage, non-prorated
Serviceability No field service required, rebuildable in the factory
Reference air requirement 0.2 to 0.5 MAX SCFH filtered air *See Reference Air Installation*