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Suspended Solids / Sludge Concentration Sensor
The Suspended Solids / Sludge Concentration Sensor is designed for continuous online measurement of suspended solids (SS) and sludge concentration (MLSS) in water and wastewater treatment processes.
Based on ISO 7027 infrared scattered light technology, the sensor effectively eliminates the influence of sample color and provides stable, repeatable, and reliable measurement results. It is widely used in municipal and industrial wastewater treatment plants, process water systems, and environmental monitoring applications.
Transmitters & Sensors Description
Suspended Solids Sludge Sensor Key Features & Advantages
ISO 7027 Standard Method
Uses infrared scattered light technology to minimize color interference and ensure measurement consistency.Dual-Beam Infrared Scattering Detection
Improves accuracy, repeatability, and long-term stability.High Measurement Reliability
Excellent repeatability and stability, suitable for continuous online monitoring.Built-in Self-Diagnostic Function
Automatically monitors sensor status to ensure reliable and accurate data output.Optional Automatic Cleaning Scraper
Reduces fouling and maintenance frequency, especially in high-solids applications.RS485 Communication
Supports connection to upper-level systems such as PLC, SCADA, or data acquisition units.
Suspended Solids Sludge Sensor Typical Applications
Municipal wastewater treatment plants
Industrial wastewater treatment
Activated sludge process monitoring (MLSS)
Sedimentation tanks and aeration basins
Environmental water monitoring
Process water systems with suspended solids
Suspended Solids Sludge Sensor Measurement Principle
The sensor applies infrared scattered light photometric technology in accordance with ISO 7027. When infrared light passes through the sample, suspended solids scatter the light. The scattered light intensity is detected by a dual-beam system and converted into a concentration value, ensuring accurate measurement independent of sample color.
Suspended Solids Sludge Sensor Installation & Maintenance
The sensor is designed for submersible installation and can be directly immersed in tanks, channels, or pipelines.
For applications with high fouling potential, the optional automatic cleaning scraper is recommended to reduce maintenance workload and ensure long-term measurement stability.
Transmitters & Sensors Parameter
| Parámetro | Especificación |
|---|---|
| Measurement Range | 0.01 – 45,000 mg/L / 0.01 – 120,000 mg/L |
| Temperature Range | 0 – 45 °C |
| Pressure Range | ≤ 0.4 MPa |
| Measurement Accuracy | ±5% FS |
| Flow Velocity | ≤ 2.5 m/s |
| Señal de salida | RS485 |
| Housing Material | 316L Stainless Steel + PVC |
| Protection Class | IP68 |
| Dimensions | Ø60 × 256 mm |
| Installation Method | Submersible |
| Temperatura ambiente | 0 – 60 °C |
| Ambient Humidity | < 90% RH |
| Signal Cable | 10 m standard, customizable up to 100 m |
Instrava OEM/ODM
Customization & Engineering Services
Instrava provides engineering-level customization and system support for suspended solids and sludge concentration measurement:
Measurement range customization for different sludge processes
Cable length extension up to 100 meters
Optional automatic wiper selection based on fouling conditions
Communication protocol configuration for PLC/DCS integration
Application-specific installation guidance and process design support
Our engineering team works closely with system integrators, OEM partners, and end users to ensure stable operation throughout the full lifecycle of the measurement system.
Recomendaciones de productos relacionados
SS (Suspended Solids) generally refers to solids in water or effluent, while MLSS (Mixed Liquor Suspended Solids) is specific to activated sludge concentration in aeration tanks. This sensor supports both applications by measuring suspended solids using infrared scattering technology.
Accuracy can be affected by sludge particle size, air bubbles, flow turbulence, sensor fouling, and improper installation depth. Proper installation and routine cleaning significantly reduce these effects.
Maintenance frequency depends on sludge characteristics. In most wastewater plants, cleaning every 1–4 weeks is recommended. The optional automatic cleaning scraper can greatly extend maintenance intervals.
Yes. The sensor supports measurement ranges up to 120,000 mg/L, making it suitable for high-concentration sludge zones such as aeration tanks, return sludge lines, and thickening processes.
SO 7027 infrared scattered light technology minimizes the influence of sample color and ambient light, ensuring consistent and reliable sludge concentration measurement even in dark or colored wastewater.
Submersible installation in areas with stable flow and representative sludge mixing is recommended. Avoid installation near aerators, in dead zones, or areas with excessive turbulence to ensure accurate and stable readings.
Por qué elegir Instrava
Al elegir Instrava, obtiene un socio con un profundo conocimiento de las aplicaciones industriales y la experiencia necesaria para hacer frente a los retos operativos actuales.
Nuestro papel va más allá de los productos: respaldamos su éxito con soluciones fiables y un compromiso a largo plazo.
Innovación impulsada por la ingeniería
La innovación en Instrava se guía por necesidades industriales reales. Perfeccionamos continuamente nuestras tecnologías para hacer frente a los cambiantes retos operativos, garantizando un rendimiento práctico y fiable en entornos exigentes.
Personalización específica de la aplicación
Ofrecemos personalización a nivel de ingeniería para adaptarnos a las condiciones específicas del proceso. Desde el rango de medición y los materiales hasta las señales de salida y las opciones de instalación, nuestras soluciones están configuradas para adaptarse a aplicaciones reales.
Calidad y fiabilidad demostradas
La calidad y la fiabilidad son fundamentales en todos los productos Instrava. Fabricados bajo estrictos controles de calidad y sometidos a pruebas exhaustivas, nuestros instrumentos ofrecen un rendimiento preciso, estable y a largo plazo.
Capacidad global con apoyo local
Instrava combina la experiencia mundial en ingeniería con una asistencia local receptiva, lo que garantiza que nuestros socios se beneficien de una tecnología alineada internacionalmente y de un servicio regional puntual.
Amplia cartera de productos
Nuestra amplia cartera de instrumentos de medición y control nos permite dar respuesta a una amplia gama de necesidades industriales, proporcionando soluciones integradas a partir de una fuente única y fiable.
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Trabajamos en estrecha colaboración con nuestros socios, desde el asesoramiento técnico hasta la asistencia posventa. Nos centramos en ofrecer soluciones que generen un valor duradero y contribuyan al éxito operativo a largo plazo.
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