Turbidity Transmitter (NTU Sensor) – T40
Industrial turbidity transmitter for water and wastewater monitoring.
The T40 turbidity sensor measures liquid clarity using transmitted light technology and provides stable, reliable readings for water treatment and wastewater applications. With IP68 protection, it can be fully immersed for continuous process monitoring in pump stations and treatment systems.
Typical applications
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Drinking water treatment plants
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Wastewater treatment facilities
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Industrial process water monitoring
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Aquaculture and water quality control
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Research and laboratory water analysis
Description
Industrial Turbidity Transmitter for Water & Wastewater Applications
The T40 Turbidity Transmitter is designed for reliable measurement of water clarity in demanding water and wastewater environments. Using transmitted light detection technology, the sensor delivers stable turbidity readings with strong resistance to electrical and optical interference.
Its robust polymer housing is chemically resistant and suitable for long-term operation in aggressive water conditions. Thanks to its IP68 protection rating, the sensor can be directly immersed in water, making it ideal for continuous online monitoring in treatment plants, pump stations, and industrial process systems.
Turbidity measurement is a key parameter in water quality control and is often used together with automation systems and VFD-controlled pumps to optimize filtration, clarification, and treatment processes. The T40 provides dependable data to support stable operation, energy efficiency, and regulatory compliance.
System integration note:
The T40 turbidity transmitter is suitable for integration with PLCs, controllers, and SCADA systems, and can be used in closed-loop control strategies involving VFD-driven pumps and treatment equipment.
Features
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Measures water turbidity in NTU
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Wide measuring range up to 4000 NTU
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Transmitted light detection for high stability
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Strong anti-interference performance
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IP68 waterproof design for full immersion
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Chemically resistant polymer housing
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Suitable for continuous online monitoring
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Designed for industrial water and wastewater environments
Specification
| Parameter | Specification |
|---|---|
| Measuring range | 1–4000 NTU |
| Lower measurement limit | 20 NTU |
| Measurement accuracy | ±5% of measured value |
| Temperature range | 0–50 °C |
| Pressure range | 0–0.3 MPa |
| Mounting thread | G3/4″ |
| Cable length | 10 m (standard), customizable |
| Housing material | Chemically resistant polymer |
| Protection rating | IP68 (fully submersible) |
FAQ
Q1: What is a turbidity transmitter, and why is it important?
A: A turbidity transmitter measures the cloudiness or clarity of water by detecting suspended particles. In water and wastewater systems, turbidity is a key quality parameter. Monitoring turbidity allows operators to control filtration, chemical dosing, and VFD-driven pumps to optimize treatment efficiency, comply with regulations, and reduce energy consumption.
Q2: What is the measuring range of the T40 turbidity sensor?
A: The T40 measures turbidity from 1 NTU to 4000 NTU, making it suitable for a wide range of applications, from drinking water to industrial wastewater. It provides precise, real-time data for process control and integration with automation systems.
Q3: Can the T40 sensor be used fully immersed in water?
A: Yes. The T40 has an IP68 waterproof rating, meaning it can be directly submerged in water for continuous monitoring. Its chemically resistant polymer housing ensures durability even in harsh water or wastewater conditions.
Q4: How does the T40 handle interference and unstable environments?
A: The sensor uses transmitted light detection technology, which provides strong anti-interference capability. This ensures accurate, stable readings even in turbulent, aerated, or particle-rich water environments.
Q5: Can the T40 integrate with VFD-controlled pump systems?
A: Absolutely. The T40 outputs analog signals that can be connected to PLCs, SCADA, or VFD systems. By integrating turbidity measurements with VFD-controlled pumps, operators can adjust flow rates or filtration processes automatically, improving energy efficiency and process stability.
Q6: What maintenance is required for the T40 sensor?
A: Maintenance is minimal. The robust, chemically resistant housing reduces fouling, but periodic cleaning is recommended depending on water quality and suspended solids. Regular calibration ensures continued measurement accuracy, typically once or twice per year in standard applications.
Q7: What industries and applications is the T40 suitable for?
A: The T40 is widely used in:
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Drinking water treatment – monitoring filtration and clarity
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Wastewater treatment – optimizing aeration and clarification
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Industrial process water – ensuring consistent quality for production
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Aquaculture – maintaining proper water conditions
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Research laboratories – validating water quality parameters
Q8: What makes the T40 different from other turbidity sensors?
A: The T40 combines:
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High IP68 protection for full immersion
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Robust chemical-resistant polymer housing
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Wide range measurement (1–4000 NTU)
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High stability and anti-interference using transmitted light detection
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Integration-friendly outputs for PLCs, SCADA, and VFD systems
These features make it a professional-grade sensor for industrial water and wastewater applications, not a simple laboratory or hobbyist sensor.
