The CellaTemp® PX 50 is a digital ratio pyrometer for measuring temperatures from 500 to 1400 °C. The ratio measuring method responds to the temperature of the flame. Due to the quotient measuring method, the instrument reacts less sensitively to disturbances caused by dust in the field of view, dirty protective screens or changing measuring surfaces than a spectral pyrometer. A through-the-lens sighting, a laser pilot light or a camera module are available for easy and precise sighting of the measurement object.