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IS 6 Advanced / IGA 6 Advanced Manual Troubleshooting · 41

9 Troubleshooting

Symptom Probable Cause Comments

No analog output

even if the display

shows a temperature

above lower range

limit

Reversed leads to IS 6

Advanced /

IGA 6 Advanced

The

IS 6 Advanced /

IGA 6 Advanced is diode

protected if power leads are

reversed.

See section 3.1

Reversed leads to other instruments

in the current loop

Open circuit in lines connecting all

instruments in current loop

Total burden higher than 500 Ohms

Insufficient supply voltage (

See wiring

diagram)

Temperature reading

differs between built-

in display and external

instrumentation

Pyrometer output setting differs from

external instrument’s input setting

Check the 0 to 20 mA or

4 to 20 mA on both sides

Check the sub range setting

on pyrometer against the

range setting on the external

instrument

Temperature readings

are too low

Target size too small

Target is not at correct focus distance

See section

3.2

With small target/close focus

models, aiming may require X-

Y positioning table for fine

adjustment during aiming

Incorrect alignment of the pyrometer

to the object

Realign pyrometer to achieve

the maximum temperature

signal

Dirty window or lens

See Section

6.1

Target temperature too low.

Incorrect slope adjustments

Faulty

IS 6

Advanced

/

IGA 6 Advanced

Contact LumaSense. See

section 1.5

Temperature readings

are too high

Targets ho

tter than expected. (This

often happens with first time infrared

Pyrometer users)

Verify target temperature

with contact type method.

(Thermocouples may not

accurately determine surface

temperature due to “heat

sink” effect)

The measurement is influenced

by

reflections of hot machine parts

Use mechanical accessories to

avoid the influence of the

interfering radiation

If target emissivity is less than 1,

reflections from nearby hot objects

will influence readings

Block reflection paths to see if

readings drop to expected

temperature

Incorrect spectral response for

application. IS 6 Advanced /

IGA 6 Advanced may be “seeing”

through target

See Technicial Specifications

Consult LumaSense for

analysis.

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