User guide

ISR 320 Manual Troubleshooting  43
Symptom Probable Cause Comments
Noisy readings (fast
fluctuations).
Improper grounding of cable shield and/or
ISR 320 housing.
Flame or reflections of flame may be entering
the field of view.
Extremely dense steam, smoke, thick dust,
personnel or moving machinery intermittently
blocking 95% of optical path of ISR 320.
Non-uniform emissivity of large moving
targets.
Slower response speed is
required.
Faulty ISR 320. Contact LumaSense. See
section 1.5