Oxy Probes

Function :

During last years oxygen measurement has become more and more important in steel industry, in order to improve the quality of the final product and to speed up production processes. For this reason, a computerized system for oxygen measurement in EAF and ladles is of great importance, especially if it can be applied to oxidizing and deoxidizing models. Moreover, computer measurement gives the opportunity to analyse all the data (oxygen values, steel composition and temperature) in order to improve metallurgical models and steelmaking practice. Suyash OxyPro consists of an oxygen reference cell and a thermocouple. The two voltage signals of the cell and thermocouple are converted in the measuring instrument OxyTem into the digital oxygen-activity value. The OxyTem can be connected to any existing computer system.

Determination of carbon :

In an electrical furnace, when producing low carbon heats, it is important to have a quick and accurate method of carbon determination in order to save time and to determine the heat level. The variation coefficient of the deviation from the carbon analysis of a sample is about 8% (carbon between 0.02 and 0.2%). The accuracy can be higher if the Mn-content of the bath is also taken into consideration.

Predeoxidation :

In case of low carbon steel, when the final carbon content is achieved, the oxygen level can be quite high. For ex. , if C= 0.05% then the oxygen activity can be 600 ppm. A high oxygen content is translated in a lower yield of the additions in the EAF or in ladle tapping (Mn and Si) and the scatter of the final analysis can be considerable.

Deoxidation :

In ladle metallurgical equipment we need to adjust chemical analysis of the steel melt so as to obtain an adequate composition for the continuous caster. The deoxidation practice for billet and slab casters must be distinguished because of different steelgrades.

Details :

• Type S R or B Platinum calibration
• Measure to 1750°C type S and R, 1800°C type B
• Get very quick, reliable and accurate Carbon prediction in BOF and EAF
• Help to control the deoxidation in steel and in ductile iron
• Non splash protection in different lengths area also available
• Contact block, hardware and software, interchangeable with major producer's probes

Features :

The finest grade of Pt Pt-Rh allows an accurate bath temperature reading and ppm of oxygen > 30 ppm.

• A cardboard with a steel cap protect the sensitive elements from slag and floating solids and provides complete protection against rough handling and shipping damage...yet melts away quickly in the molten metal.


• Thermocouple:
  Platinum. 1O% Rhodium-Platinum (Type S),
  Platinum 13% Rhodium-Platinum (Type R),
  platinum30% Rhodium, Platinum 6% Rhodium (Type B).
  Thermocouple has electrically welded measuring junction and electrically welded junctions between couple and compensating terminal leads.


• Oxygen: Zr O2 oxygen cell with molybdenum stick wire connected in common with the negative of thermocouple.


• Refractory body: featuring low thermal-conductivity, is cast after the measuring junction is positioned into a retainer and carefully controlled during dry procedure.


• Standard flexible contact (or equivalent to HEN standard) guarantees a safe connection to the standard existing receptacle produced from major competitors.


• Paper protection tube: Rigid, dry and must be tested from local engineers to assure that the thickness of the walls is enought to protect the lance during the immersion on the basis of the max bath temperature.