TSS/SS Measurement for Accurate Suspended Solids and Water Quality Monitoring

Sludge and dirt coverage on optical window

Suspended sediment, biofilm and grease will block infrared light transmission of the sensor lens. Without regular automatic wiping, light attenuation occurs, leading to low reading deviation and unstable TSS detection results.

Temperature changes alter water light transmittance and circuit signal output. Without built-in temperature offset correction, the instrument generates offset readings, especially in sewage with large seasonal temperature differences.

Single-point calibration cannot eliminate full-range linear drift, while expired standard sludge solution also causes calibration errors. Incorrect calibration data will make all subsequent real-time measurements inaccurate.

High-power blowers, pumps and frequency converters produce electromagnetic noise, which disturbs the weak optical signal transmitted by the sensor. This causes frequent jumping of TSS values on the display screen.

If users select a low-range sensor for high-concentration sludge tanks, signal saturation will happen. Mismatched gear ranges reduce resolution and fail to capture subtle suspended solid concentration changes.

Long-term underwater use leads to aging infrared transmitters and receivers, lowering light intensity. Slow signal drift accumulates over weeks, requiring periodic re-calibration to restore instrument precision.