| Symptom | Likely cause | Action | |--------|--------------|--------| | Drifting reading | Dirty cell / contaminated filter | Clean optical bench per manual | | No flow | Blocked inlet or exhausted pump | Check filters, replace pump diaphragm | | Span fails | Expired span gas / wrong concentration | Verify gas, recalibrate | | Low sensitivity | Detector aging / window fogging | Contact Ametek service |
If Ametek has moved the 880-NSL to "end-of-life" status and removed the direct link: ametek 880-nsl user manual pdf
Use the search function
Check the product support section
Contact Ametek support directly
Alternative sources (use caution)