NS-ML683 Digital Sludge Concentration Sensor

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NS-ML683 Digital Sludge Concentration Sensor

Product ID：CHGOTHER048

Price: Please inquire PDF Format

Supply Ability:50 SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberNS-ML683

Brand NameSHANGHAINUOBO

Payment TermsT/T, paypal，Alibaba.com Pay

NS-ML683 Digital Sludge Concentration Sensor

Product Introduction
The NS-ML683 Digital Sludge Concentration Sensor is an online sensor designed for continuous monitoring of sludge and suspended solids concentration in water and other liquid media. It uses advanced infrared light transmission technology to determine suspended solids concentration by analyzing the infrared light received by the detector after transmission through the measured medium.
The sensor provides stable and continuous measurement across both low and high concentration ranges. Built-in photometric compensation helps reduce measurement deviations caused by changes in environmental conditions, while the invisible near-monochromatic infrared light minimizes interference from liquid color and external visible light.
With a 316L stainless steel housing, quartz optical lens, RS485 communication, and 4–20mA output, the NS-ML683 is suitable for chemical processing, electroplating, papermaking, environmental water treatment, pharmaceuticals, food processing, municipal water, and other applications requiring continuous suspended solids or sludge concentration monitoring.

Performance Features
•Infrared transmission measurement: Uses stable invisible near-monochromatic infrared light for suspended solids concentration measurement.
• Wide measurement range: Standard range up to 0–10,000 mg/L, with customized ranges available.
• Built-in photometric compensation: Helps reduce measurement deviation caused by environmental changes.
• Reduced light interference: Infrared measurement minimizes interference from liquid color and external visible light.
• High-transmission quartz lens: Provides stable infrared light transmission and reception.
• Stable measurement: Offers high accuracy, good repeatability, and continuous measurement performance.
• Low flow and pressure influence: Measurement is designed to be less affected by sample flow velocity and pressure.
• Durable housing: 316L stainless steel provides good corrosion resistance.
• Dual isolated outputs: Provides RS485 and 4–20mA outputs with optically isolated protection.
• Flexible communication: RS485 supports partially compatible MODBUS-RTU communication.
• Fast communication: Communication interval can be as short as 50 ms.
• Three-point calibration: Supports three-point correction for measurement calibration.
• Direct system integration: Can connect directly to computers, PLCs, and compatible industrial or IoT systems without a separate meter.

Working Principle
The NS-ML683 operates using infrared transmission technology. An infrared emitter sends invisible near-monochromatic infrared light through the measured medium. Suspended particles in the medium affect the amount of infrared light transmitted to the detector.
The sensor collects the transmitted light signal and analyzes the resulting data to determine the concentration of suspended solids or sludge in the medium. A high-transmission quartz lens helps maintain stable infrared emission and reception.
The built-in photometric compensation function helps compensate for measurement deviations caused by environmental changes. The processed concentration data can then be transmitted through RS485 or converted into a 4–20mA analog output.

Technical Specifications

Parameter	Specification
Model	NS-ML683
Measurement Principle	Infrared transmission method
Measurement Parameter	Sludge / suspended solids concentration
Measurement Range	0–10,000 mg/L, customizable
Accuracy	±1.0% FS
Repeatability	±1.0%
Communication	RS485, partially compatible with MODBUS-RTU
Analog Output	4–20mA, reversible output
Output Isolation	Optically isolated
Communication Interval	Up to 50 ms minimum
Operating Conditions	0–60°C; pressure ≤0.6 MPa
4–20mA Load	<300Ω
Operating Voltage	DC 12V ±10%
Dimensions	Length 237 mm; maximum diameter 64 mm
Installation	Submerged installation
Mounting Thread	G1 pipe thread
Weight	2.0 kg
Protection Rating	IP68
Calibration	Three-point calibration
Housing Material	316L stainless steel

Application Scenarios
• Environmental Water Treatment: Continuous sludge and suspended solids monitoring in wastewater treatment systems.
• Chemical Industry: Monitoring suspended solids concentration in process liquids.
• Electroplating: Online monitoring of suspended solids in electroplating-related water treatment.
• Papermaking: Monitoring solids concentration in process and wastewater streams.
• Pharmaceutical Industry: Applicable liquid concentration monitoring in pharmaceutical water treatment.
• Food Processing: Continuous suspended solids monitoring in food-related water treatment.
• Municipal Water: Monitoring suspended solids in water treatment and supply processes.
• Field Monitoring: The submerged IP68 design is suitable for outdoor and on-site measurement applications.

Comparison: NS-ML683 Infrared Sensor vs. Conventional Suspended Solids Measurement

Feature	NS-ML683 Digital Sensor	Conventional Suspended Solids Measurement
Measurement Method	Infrared transmission	Depends on measurement method
Measurement Range	0–10,000 mg/L, customizable	Depends on instrument
Photometric Compensation	Built-in	Depends on system
Visible Light Interference	Minimized by infrared source	Depends on optical design
Liquid Color Interference	Reduced by near-monochromatic infrared light	Depends on method
Output	RS485 + 4–20mA	Depends on instrument
Signal Isolation	Optically isolated	Depends on system
Calibration	Three-point calibration	Depends on instrument
Installation	Submerged	Depends on equipment
Housing	316L stainless steel	Depends on model
Protection	IP68	Depends on equipment

FAQ
1. What does the NS-ML683 measure?
The NS-ML683 is designed for continuous measurement of sludge or suspended solids concentration in liquids.
2. What measurement principle does the sensor use?
It uses infrared transmission technology. Infrared light passes through the measured medium and the transmitted signal is analyzed to determine suspended solids concentration.
3. What is the standard measurement range?
The standard measurement range is 0–10,000 mg/L, and customized ranges are available.
4. Is the sensor affected by external visible light?
The sensor uses an invisible near-monochromatic infrared light source, which helps reduce interference from external visible light.
5. Does the sensor compensate for environmental changes?
Yes. Built-in photometric compensation helps reduce measurement deviations caused by environmental changes.
6. What communication interfaces are available?
The sensor provides RS485 communication with partially compatible MODBUS-RTU protocol and a 4–20mA analog output. Both outputs feature optically isolated protection.
7. Can the sensor connect directly to a PLC or computer?
Yes. It can directly connect to compatible computers, PLCs, and industrial or IoT systems without a separate meter.
8. What installation method does the NS-ML683 use?
It uses submerged installation with a G1 pipe thread.
9. Is the sensor suitable for outdoor or field applications?
Yes. Its IP68 protection rating, 316L stainless steel housing, and submerged installation design make it suitable for applicable field and on-site monitoring environments.

FAQ
1. What does the NS-ML683 measure?
The NS-ML683 is designed for continuous measurement of sludge or suspended solids concentration in liquids.
2. What measurement principle does the sensor use?
It uses infrared transmission technology. Infrared light passes through the measured medium and the transmitted signal is analyzed to determine suspended solids concentration.
3. What is the standard measurement range?
The standard measurement range is 0–10,000 mg/L, and customized ranges are available.
4. Is the sensor affected by external visible light?
The sensor uses an invisible near-monochromatic infrared light source, which helps reduce interference from external visible light.
5. Does the sensor compensate for environmental changes?
Yes. Built-in photometric compensation helps reduce measurement deviations caused by environmental changes.
6. What communication interfaces are available?
The sensor provides RS485 communication with partially compatible MODBUS-RTU protocol and a 4–20mA analog output. Both outputs feature optically isolated protection.
7. Can the sensor connect directly to a PLC or computer?
Yes. It can directly connect to compatible computers, PLCs, and industrial or IoT systems without a separate meter.
8. What installation method does the NS-ML683 use?
It uses submerged installation with a G1 pipe thread.
9. Is the sensor suitable for outdoor or field applications?
Yes. Its IP68 protection rating, 316L stainless steel housing, and submerged installation design make it suitable for applicable field and on-site monitoring environments.