: Includes self-monitoring diagnostics and a built-in calibration filter for automatic span verifications. Technical Specifications Specification Accuracy of full scale for H2Scap H sub 2 cap S SO2cap S cap O sub 2 Reproducibility of full scale Digital Output RS485 serial port with remote dial-in capabilities Operating Temp Mounting

| 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 |

When the analyzer shows 0% for both SO₂ and H₂S despite tail gas being present, the manual directs operators to check the detector assembly, specifically the filter assembly (part number 880033901) and photodiode circuit board (part number 880020901).

If you tell me the specific error code you are seeing, I can help you locate the relevant section in the troubleshooting guide. Is it a "No Flow" error? Is the "Signal Low" or "Reference Low" ? Are you getting a "Cal Fail" ? Share public link

Procedures for using the automatic span filter or manual zeroing with instrument air. 5. Maintenance and Troubleshooting

Designed for continuous operation in sulfur recovery tail gas applications.

The primary source is the AMETEK SI (formerly part of the AMETEK NDT division) website.

Common issues include "No Flow" (often caused by blocked sample probes) and "Signal Low" (often related to lamp degradation or fouled optical surfaces). Accessing the Official AMETEK 880-NSL Manual PDF