The CellaTemp® PK 25 is equipped with a special blocking filter. This means that the measurement is not influenced by daylight. The infrared thermometer also reacts much less sensitively to reflective interference radiation in the environment than conventional, short-wave measuring devices. The CellaTemp® PK 25 is used for a wide variety of applications in the metalworking industry and in particular for measuring the temperature of aluminium and bare metals at low temperatures. Due to the blocking filter, it can also be used for measurement in processes in which diode, Nd:YAG or CO2 lasers are used for heating. The energetically high laser radiation does not influence the measurement.