QE-Probe XS11.QE - ZIROX Sensoren & Elektronik - PDF Catalogs | Technical Documentation

Catalog excerpts

ZIROX QE-Probe XS11.QE Properties The main part of the QE-probe XS11 is a potentiometric solid electrolyte cell (ZrO2 sensor). This sensor is continuously provided with a gas sample from the treatment area via heated catalyst (complete decomposition of NH3). Cell and catalyst have a temperature of 760 °C to avoid unwanted reaction products (e.g. CH4). The designation QE-probe points out that due to the probe signal the quotient of partial pressures of the reactive furnace gases (only with oxygen reacting gases) in equilibrium can be calculated. Water vapour and hydrogen or H2O+CO2 und H2+CO in the water gas equilibrium serve as an example. The QE-probe is calibration-, drift- and maintenance-free. The use of high-quality components and materials guarantees long-term stability. Applications The QE-probe is used in the hardening technique in nitriding and nitrocarburizing processes. It serves the monitoring of the protective gas. By combining the QE-probe and QE-probe signals, the nitriding character Kn or carburizing character Kc, can be adjusted and controlled if necessary considering the unburnt gas mixture.

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