Sensors for Molten Metals

Molten Metal sensor: 1,ISO 9001 ,CE 2,Diffrent type 3.High quality Molten Metal sensor:           Hangzhou Mark techological co.,ltd  offers a wide range of different measurement probes, samplers and instruments for the application in liquid steel. Special sensors for zinc galvanization.          Control         Spot measurement    Fast, accurate, and reliable liquid metal temperature readings are indispensable tools for cost-effective temperature control during steel production. High performance expendable temperature sensors from Heraeus Electro-Nite offer a wide choice of thermocouple types, probe lengths, and immersion lances to suit all process applications. Additional non-splash, for improved operator protection, together with multi-immersion designs are available for critical applications and use in foundries.Sensors: Positherm, Positherm Non-Splash      Continuous measurementA highly robust permanent sensor controls temperature profiles during the continuous casting process. Precision is same as for spot measurements. A variety of holding devices and cable lengths are offered.Sensors: CasTemp, Contitherm, Contilance

      Activity Control

Monitoring oxygen activity throughout the steel making process is essential for production control and final as-cast quality. In less than 10 seconds, our expendable oxygen sensors measure the melt's oxygen activity a(O) over a wide concentration range in areas from hot metal desulphurization, furnace tapping, through ladle refining and continuous casting. Correlations to S and Si in Hot Metal, carbon and aluminium in primary and secondary steelmaking are implemented in the formulas of our instruments.Sensors: Celox, Celox Hot Metal, HY-OP, ZIRCOMEX     Slag ProbesMeasuring the Oxidation potential of metallurgical slagsCelox SLAC controls ferrous furnace and ladle slag in terms of its FeO or FeO-MnO contents. The cell is built like the Celox sensor, but exposes an open zirconia thimble to pick-up slag during immersion. Celox SLAC goes together with standard Celox hardware and instrumentation. The sensor does not comprise a thermocouple, as not needed in slag chemistry.Sensors: Celox SLAC, QuiK-SlagSlag sampling in BOF and steel pouring ladleQUSAS is applied and immersed as a regular sampler. When QUSAS passes through the slag surface into steel, slag is collected in its chamber and compressed to a lollipop shape protected by an outer steel ring. The sampler can easily be removed when breaking the sand body after immersion, and is ready for transport and for instant XRF analysis.Sensor: QUSASCarbon ControlBased on the Thermal Analysis of a solidifying metal sample, Heraeus Electro-Nite's instant carbon control sensors are available as a crucible version or as an immersion sensor. During primary steel melting and steel foundry casting, an instant carbon measurement prior to tap can avoid time delays and off-specification chemistry, especially where medium carbon tap levels are common.Sensors: QuiK-Carb, Econ-O-Carb , TapTipHydrogen & Nitrogen ControlGas sensor - HydrogenThe Hydris sensor system uses the principle of hydrogen partial pressure distribution between gas and liquid phase. The Hydris system gets a certified gas composition into equilibrium with the liquid metal to be measured. Using Sieverts’ law the hydrogen concentration in liquid metal may be calculated. The Hydris system does this automatically. Immersion of probe and reading are very much like a temperature test, just the immersion time of the probe is a little longer, but typically less than a minute. Hydris’ precision is today the industrial standard of hydrogen measurement in liquid metals, operator independent and free from previous sample preparation and analysis errors. A reported Hydris certificate is worldwide accepted as best method.Depending on application different sensor types are used:- Ladle- Tundish- Ingot mouldSensor: HydrisGas sensor - NitrogenThe Nitris sensor system to measure nitrogen in-situ uses a measurement technique similar to Hydris, but sensors and instrumental hardware vary somewhat. Nitris finds its application where a fast nitrogen result is needed, especially when a sudden steel grade change-over or a yield confirmation of a nitrogen alloyer addition is required.

Sensors for Molten Metals