Lumasense-technologies IN 5/5 Manual de usuario descargar pdf (Pagina 25)

INFRATHERM pyrometers IN 5 · IN 5/5

12 Trouble shooting

Before sending the pyrometer for repair, try to find the error and to solve the problem with the help of the

following list.

Temperature indication too low

• Incorrect alignment of the pyrometer to the object

⇒ New correct alignment to achieve the max. temperature signal (see 8)

•

Measuring object smaller than spot size

⇒ check measuring distance, smallest spot size is at nominal measuring distance (see 7)

•

Emissivity set too high

⇒ Set lower correct emissivity corresponding to the material (see 9.1.1)

• Len

s contaminated

⇒ Clean lens carefully (see 11.2)

Tempera

ture indication too high

• Emissivity set too low

⇒ Set lower correct emissivity corresponding to the material (see 9.1.1)

•

The measurement is influenced by reflections of hot machine parts

⇒ Use mechanical construction to avoid the influence of the interfering radiation

Measuring errors

• Indicated temperature is decreasing during the use of the pyrometer, contamination of the lens

⇒ Clean lens. Recommendation: use of air purge (see 11.2, 6.1)

•

Indicated temperature is decreasing during the use of the pyrometer, although the air purge unit is used.

Probably compressed air is not clean or air failed

⇒ Clean the lens and use clean, dry and oil free compressed air

• Air contamination in the sighting path between pyrometer and object

⇒ Change position of the pyrometer with a clean sighting path (if necessary use a ratio pyrometer)

• HF-interferences

⇒ Correct the connection of the cable shield (see 5)

• Instrum

ent overheated

⇒ Use cooling jacket with air or water cooling (see 6.1)

•

Temperature Indication is fluctuating, probably caused by changing emissivity

⇒ Wrong pyrometer type, use of ratio pyrometer recommended

1 2 ... 20 21 22 23 24 25 26 27 28

Sin comentarios

Lumasense-technologies IN 5/5 Manual de usuario Pagina 25