Proper operation and regular maintenance of radiation thermometers are the prerequisites for temperature measurements with the specified accuracy. The guideline describes typical sources of interference for temperature measurement and recommends countermeasures. Maintenance work that the user can carry out and tests that should be carried out by accredited bodies are also described.*www.vdi.de/3511
VDI/VDE 3511 Blatt 4.2-2014 history
2014VDI/VDE 3511 Blatt 4.2-2014 Temperature measurement in industry - Radiation thermometry - Maintenance and intended operation of radiation thermometers
2002VDI/VDE 3511 Blatt 4.2-2002 Temperature measurement in industry - Maintenance of the specification for radiation thermometers
2000VDI/VDE 3511 Blatt 4.2-2000 Technische Temperaturmessungen - Ergaenzungen - Erhaltung der Spezifikation von Strahlungsthermometern