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ST Probe

SIRO2 C700 ST Probe

The ST probe incorporates a SIRO₂ C700 all ceramic oxygen sensor, shielded by a 253 MA stainless steel sheath for use in carburising furnaces. The probe design is specifically intended for small apertures into furnaces. It is used for measurement and control of oxygen sensitive environments at high temperatures. The sensor operates in situ, and measures oxygen concentration in real time, without the need for expensive gas sampling, or gas extraction equipment. The probe comes complete with a K-type thermocouple.


  • Specific for O2
  • High O2 sensitivity and selectivity
  • High dynamic range of detection
  • High temperature of operation
  • Rapid responses
  • In situ measurement
  • Solid state electronic component – rugged sensor
  • No power consumed for operation under all conditions
  • No bias required to operate
  • Available up to 1400 mm
  • Air purge


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