SH-MLSS200 Mixed Liquor Suspended Solids digital sensor
Overview
SH-MLSS-200 Mixed Liquor Suspended Solids digital sensor is an intelligent device for measuring the concentration of suspended solids, in aeration tanks during the activated sludge process. The sensor adopts infrared light scattering method, i.e. light scattering occurs on the sludge surface after the incident light enters into the water body, and the intensity of the scattered light is detected on the light path which is in a certain angular direction with the incident light, so that the concentration of sludge in the water body can be obtained through the proportionality relationship between the intensity of the scattered light and the concentration of sludge.
Product features
- Monochromatic infrared light source, unaffected by sample chromaticity
- Self-cleaning function removes light window stains and air bubbles, maintenance-free
- Sampling optics and digital filtering technology to eliminate the effects of stray light
- Corrosion-resistant housing, waterproof grade IP68, can work underwater for a long time
- RS485 communication interface, standard Modbus protocol for easy integration.
Technical specifications
| Working Principle | Infrared light scattering |
| Meas. wavelength | 860 nm |
| Meas. range | (0-50) g/L (other ranges available on request) |
| Repeatability | ≤2 % |
| Accuracy | ±5 % |
| Zero drift (24h) | ±2 % |
| Range drift (24h) | ±3 % |
| Detection limit | 1 mg/L |
| Resolution | 0,1 mg/L |
| Protection class | IP68 |
| Comm. interface | RS485, standard Modbus protocol, baud rate 9600 |
| Dimensions | (φ33*178) mm, cable 10 m (customizable) |
| Materials | 316 Stainless-steel |
| Mounting threads | Upper NPT3/4 thread |
| Operating voltage | 9~36 Vdc |
| Power consumption | 1 W (motor brushes rotating), 0.4 W (motor brushes not working) |
| Cleaning method | Mechanical brush |
| Calibration period | 3-6 months |
| Operating temp. | (0~50) °C |
Product applications
Wastewater treatment plant treatment process, outfall water quality monitoring, sludge tank suspended solids control